Patent Publication Number: US-11040241-B1

Title: Methods of exercising human arms

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims benefit to U.S. Nonprovisional application Ser. No. 16/355,696, filed on Mar. 15, 2019; and this application hereby incorporates herein U.S. Nonprovisional application Ser. No. 16/355,696 as if set forth herein in its entirety. 
     BACKGROUND 
     1. Field of Inventions 
     The field of this application and any resulting patent is exercising human arms. 
     2. Description of Related Art 
     Various arm exercise assemblies and methods of exercising human arms have been proposed and utilized, including some of the methods and structures disclosed in the references appearing on the face of this patent. However, those methods and structures lack the combination of steps and/or features of the methods and/or structures covered by the patent claims below. Furthermore, it is contemplated that the methods and/or structures covered by at least some of the claims of this issued patent solve many of the problems that prior art methods and structures have failed to solve. Also, the methods and/or structures covered by at least some of the claims of this patent have benefits that would be surprising and unexpected to a hypothetical person of ordinary skill with knowledge of the prior art existing as of the filing date of this application. 
     SUMMARY 
     The disclosure herein includes a method of exercising a human arm, which method may include: 1) providing an arm exercise assembly, comprising: a) a frame; b) a wheel coupled to the frame; c) two locks disposed on the wheel; and d) a handle coupled to the wheel; 2) coupling the two locks to the wheel; and 3) abutting the handle against one or both of the two locks. 
     The disclosure herein includes a method of exercising a human arm, which method may include: 1) providing an arm exercise assembly, comprising: a) a frame shaped and sized to receive a human forearm; b) a wheel coupled to the frame; c) two locks disposed on the wheel; and d) a handle coupled to the wheel; 2) coupling the two locks to the wheel; and 3) abutting the handle against one or both of the two locks. 
     The disclosure herein includes a method of exercising an arm, which method may include: pulling a lock away from a central axis of a wheel of an arm exercise assembly; sliding a lock along the wheel; pushing the lock towards the central axis of the wheel; coupling the lock to the wheel; pivoting a handle pivotably coupled to the wheel; and pressing the handle against the lock. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a wheel pivotably coupled to the frame; two locks slidably coupled to the wheel, wherein the handle may be capable of being abutted against one or both of the two locks. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket; two locks extending radially through the wheel toward inner portions of the wheel; and a handle pivotably coupled to the wheel, wherein the handle may be capable of being abutted against one or both of the two locks. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket, the wheel having an aperture; a first lock disposed in the aperture; a second lock disposed in the aperture; and a handle pivotably coupled to the wheel, wherein the handle may be capable of being abutted against the first lock, the second lock, or both. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket, the wheel having an aperture; a first lock slidably coupled to the a handle; a second lock slidably coupled to the wheel; and a wheel coupled to the piston and pivotably coupled to the wheel, the handle comprising: a first portion capable of being abutted against the first lock; and a second portion capable of being abutted against the second lock. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a bracket pivotably coupled to the frame; a wheel pivotably coupled to the bracket; a lock extending through the wheel towards a central axis of the wheel; and a handle pivotably coupled to the wheel, wherein the handle is capable of being abutted against the lock. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a perspective view of an arm exercise assembly. 
         FIG. 2  illustrates a side view of an arm exercise assembly. 
         FIG. 3  illustrates a cross-sectional view of a wheel. 
         FIG. 4  illustrates a cross-sectional view of a handle and locks coupled to a wheel. 
         FIG. 5A  illustrates a cross-sectional side view of a lock in a locked configuration disposed in a wheel. 
         FIG. 5B  illustrates a cross-sectional side view of a lock in an unlocked configuration disposed in a wheel. 
     
    
    
     DETAILED DESCRIPTION 
     1. Introduction 
     A detailed description will now be provided. The purpose of this detailed description, which includes the drawings, is to satisfy the statutory requirements of 35 U.S.C. § 112. For example, the detailed description includes a description of inventions defined by the claims and sufficient information that would enable a person having ordinary skill in the art to make and use the inventions. In the figures, like elements are generally indicated by like reference numerals regardless of the view or figure in which the elements appear. The figures are intended to assist the description and to provide a visual representation of certain aspects of the subject matter described herein. The figures are not all necessarily drawn to scale, nor do they show all the structural details, nor do they limit the scope of the claims. 
     Each of the appended claims defines a separate invention which, for infringement purposes, is recognized as including equivalents of the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention” will refer to the subject matter recited in one or more, but not necessarily all, of the claims. Each of the inventions will now be described in greater detail below, including specific embodiments, versions, and examples, but the inventions are not limited to these specific embodiments, versions, or examples, which are included to enable a person having ordinary skill in the art to make and use the inventions when the information in this patent is combined with available information and technology. Various terms as used herein are defined below, and the definitions should be adopted when construing the claims that include those terms, except to the extent a different meaning is given within the specification or in express representations to the Patent and Trademark Office (PTO). To the extent a term used in a claim is not defined below or in representations to the PTO, it should be given the broadest definition persons having skill in the art have given that term as reflected in at least one printed publication, dictionary, or issued patent. 
     2. Selected Definitions 
     Certain claims include one or more of the following terms which, as used herein, are expressly defined below. Each of the terms are defined to additionally encompass any structure identified as being in any of the drawings. 
     The term “abut against” as used herein as a verb is defined as position adjacent to and either physically touch or press against, directly or indirectly. After any abutting takes place with one object relative to another object, the objects may be fully or partially “abutted.” A first object may be abutted against a second object such that the second object is limited from moving in a direction of the first object. For example, a portion of a handle may be abutted against a lock. 
     The term “adjacent” as used herein means next to and includes physical contact but does not require physical contact. 
     The term “align” as used herein as a verb is defined as manufacture, form, adjust, or arrange one or more physical objects into a particular position. After any aligning takes place, the objects may be fully or partially “aligned.” Aligning preferably involves arranging a structure or a surface of a structure in linear relation to another structure or surface; for example, such that their borders or perimeters may share a set of parallel tangential lines. In certain instances, the aligned borders or perimeters may share a similar profile. Additionally, apertures may be aligned such that a structure or portion of a structure may be extended into and/or through the apertures. 
     The term “aperture” as used herein is defined as any opening in a solid object or structure, e.g., a frame, a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, and/or a tubular. For example, an aperture may be an opening that begins on one side of a solid object and ends on the other side of the object. An aperture may alternatively be an opening that does not pass entirely through an object but only partially passes through, e.g., as a groove. An aperture can be an opening in an object that is completely circumscribed, defined, or delimited by the object itself. Alternatively, an aperture can be an opening formed when one object is combined with one or more other objects or structures. An aperture may receive an object, e.g., pin, ball bearing, lock, portion of a lock, and/or a portion of a handle. For example, a portion of a lock and/or a handle may be received in an aperture of a wheel. 
     The term “arm exercise assembly” as used herein is defined as an assembly configured to resist movement of a human hand that is holding a portion of the assembly. An arm exercise assembly may be capable of receiving a human arm and hand. An arm exercise assembly may be strapped to a human arm. An arm exercise assembly may include a frame, a strap, a wheel, a plate, a spacer, a coil, a plunger, a handle, a guide, a lock, a piston, and/or a tubular. 
     The term “assembly” as used herein is defined as any set of components that have been fully or partially assembled together. A group of assemblies may be coupled to form a solid structure or a housing having an inner surface and an outer surface. 
     The term “coupled” as used herein is defined as directly or indirectly connected or attached. A first object may be coupled to a second object such that the first object is positioned at a specific location and orientation with respect to the second object. For example, a piston may be coupled to a frame. A first object may be either permanently, fixedly, removably, slidably, threadably, and/or pivotably coupled to a second object. Two objects may “permanently coupled” to each other if location and/or orientation one of the two objects, in some cases, cannot be changed relative to the other of the two objects. Two objects may “fixedly coupled” to each other if location and/or orientation one of the two objects can remain constant relative to the other of the two objects. For example, a lock may be fixedly coupled to a handle, e.g., such that pressing on lock, in some cases does not move the lock relative to the handle. Two objects may be “removably coupled” to each other via locks, pins, threads, tape, latches, hooks, fasteners, locks, male and female connectors, clips, clamps, knots, and/or surface-to-surface contact. For example, a lock and wheel may be removably coupled to each other such that the lock may then be uncoupled and removed from the wheel. Two objects may be “slidably coupled” together, where one object is capable of being slid against a surface of a second object. For example, a lock slid through an aperture of a wheel and may be capable of being slid against the wheel is said to be slidably coupled to the wheel. Additionally, two objects may be capable of being “threadably coupled,” e.g., where a threaded outer surface of one object is capable of being engaged with or to a threaded inner surface of another object. Threadably coupled objects may be removably coupled. Accordingly, a cap may be threadably coupled to a plunger of a lock where a threaded inner surface, e.g., box threads or female threads, of the plunger may be engaged with a threaded outer surface, e.g., pin threads or male threads, of the cap. 
     The term “cylindrical” as used herein is defined as having straight parallel sides and a circular or oval or elliptical cross-section, e.g., shaped like a cylinder. Examples of a cylindrical structure or object include a plate, a pipe, a spacer, a housing, a plunger, a handle, a guide, a lock, and a tubular. A cylindrical object may be completely or partially shaped like a cylinder. For example, a wheel may have an aperture that extends through the entire length of the wheel to form a hollow cylinder capable of permitting another object, e.g., a handle and/or a human hand, to be extended or passed through. Alternatively, a solid cylindrical object may have an inner surface or outer surface having a diameter that changes abruptly. A cylindrical object may have and inner or outer surface having a diameter that changes abruptly to form a “lip,” e.g., flange, face, collar, or rim. A cylindrical object may have a collar extending towards or away from the central axis line of the object. A cylindrical object may have a collar disposed on its inner surface. A cylindrical object may have a collar disposed on its outer surface. Additionally, a cylindrical object, may have a collar that is tapered or radiused. 
     The term “electrode” as used herein is defined as a structure on or through which electricity is capable of being conducted. An electrode may be made from conductive material, e.g., carbon-based, metal-based, or metal oxide-based. A carbon-based electrode may be, e.g., made from polyacrylonitrile-based carbon fibers, pitch-based carbon fibers, rayon-based carbon fibers, vitreous carbon, carbon nanotubes (CNTs), carbon nanocoils, carbon nanowires, carbon nanofibers, carbon whiskers, and/or graphite fibrils. An electrode may be, e.g., a strip of polymer that includes polypyrroles, polythiophenes, polyanilines, polyacetylenes, poly-p-phenylenes, and derivatives thereof. Types of polythiophene polymers may include poly (3,4-ethylenedioxy thiophene) (PEDT) and poly (styrenesulfonate) (PEDOT-PSS). A metal-based electrode may be one or more fibers or nanowires made from metal or alloy, e.g., gold, platinum, silver, nickel, silicon, stainless steel, copper, brass, aluminum, zirconium, hafnium, Vanadium, niobium, tantalum, chromium, molybdenum, manganese, technetium, rhenium, iron, osmium, cobalt, zinc, scandium, boron, gallium, indium, silicon, germanium, tin, magnesium, etc. A metal oxide-based electrode may be one or more fibers or nanowires made from metal oxide or metal oxide composites. An electrode may be woven into fabric lining of a brace of an arm exercise assembly. An electrode may be coupled to an inner surface of a brace of a frame. An electrode may include a plug. A printer may print and/or spray conductive material onto a surface to form an electrode thereon. An electrode may be coupled to a power supply, e.g., one or more batteries. 
     The terms “first” and “second” as used herein merely differentiate two or more things or actions, and do not signify anything else, including order of importance, sequence, etc. 
     The term “frame” as used herein is defined as a structure, preferably a cylindrical structure, preferably configured to receive a human forearm, fully or partially. A frame may have an upper brace and a lower brace. A frame may have bracket having the shape of a half of a cylinder cut parallel to its central axis. In other words, a frame may have a bracket having the shape of a block-letter “C.” A frame may have an upper brace and a lower brace are coupled. A frame may have an upper brace and a lower brace that are unitary. A frame may have an upper brace and a lower brace that form a cylindrical structure. A frame may have a brace having an inner surface abutted against a human forearm. 
     The term “groove” as used herein is defined as an indentation in a surface or the space defined by two intersecting curved or planar surfaces at an angle, e.g., a channel. A groove may extend in a straight line from one end to another. A groove may be a continuous loop, e.g., around a cylindrical structure. A groove may extend in a meandering path from an end to another, e.g., a S-shaped or C-shaped path. A groove may have a cross-section that is V-shaped or L-shaped. A groove may have a cross-section that is rectangular. A groove may have a cross-section that is arcuate, e.g., U-shaped. 
     The term “guide” as used as a noun herein is defined as a structure, preferably a cylindrical structure, configured to be slid or disposed within or into a wheel. A guide may be curved. A guide may be coupled to a handle. A guide and a handle may be unitary. A guide may have an end abutted against a coil. A guide may have a first end abutted against a first coil and a second end abutted against a second coil. 
     The term “handle” as used as a noun herein is defined as a structure, preferably a cylindrical structure, configured to be gripped by a human hand. A handle may have one or more posts. A handle may have a post coupled to a guide. A handle may have a post and a guide that are unitary. A handle may have a guide disposed in a channel of a wheel. A handle may have a portion abutted against a lock. A handle may have a portion abutted against a pressure sensor. A handle may be disposed between two locks. A handle may have a post disposed between two locks. A handle may have a guide disposed between two locks. 
     The terms “he,” “she,” “they,” and any other personal pronouns as used herein refer to any gender interchangeably. For example, all uses of “he” encompasses “she” as well. 
     The term “housing” as used herein is defined as a structure, preferably a cylindrical structure, configured to receive another object or structure, fully or partially. For example, a housing may be configured to receive a plunger and/or one or more pins. The pins may have portions extending through the housing. A housing may be part of a lock. A housing may have one or more apertures extending therethrough. A housing may have one or more threaded ends for coupling with another housing. Multiple housings may be coupled axially to form a longer housing. A housing may receive another object or structure, e.g., plunger and/or pin, therein. A housing and an object or structured, e.g., plunger, disposed therein may be concentric. 
     The term “lock” as used herein as a noun is defined as a structure capable of inhibiting movement of an object. For example, a lock may be used to inhibit movement, e.g., pivoting or rotation, of a handle. A lock may include a housing, a plunger, a plurality of pins, e.g., balls, ball bearings, pegs, or rods. A lock may include one or more pins disposed in a housing. A lock may include a pin disposed in a groove of a plate of wheel. 
     The term “motor” as used herein is defined as an assembly for driving movement and/or vibration of an object, e.g., handle. Movement of an object may include vibration of the object. A motor may be coupled to a power supply, e.g. one or more batteries. 
     The term “pin” as used herein is defined as a structure capable of being received in an aperture, e.g., groove, of another structure. A pin may be capable of coupling two objects. For example, a pin may couple a lock to a wheel. A pin may be capable of inhibiting movement of an object. For example, a pin of a lock pressed into a groove of a wheel may inhibit movement of the lock relative to the wheel. A pin may be a ball, a rod, a peg, or a cone. 
     The term “pivot” as used as a verb herein is defined as turn, e.g., move, rotate, swivel, revolve, and/or spin around a point. After any pivoting takes place with an object, the object may be “pivoted.” 
     The term “piston” as used herein is defined as a structure or an assembly configured to resist force applied thereto. A piston may include a housing, a piston rod, and a coil. The piston rod and the coil may be disposed in the housing. The piston rod may be slidably coupled to the housing. The coil may be disposed between the piston rod and an inner surface of the housing. The coil may be abutted against the piston rod and an inner surface of the housing. The coil may push the piston rod and the housing in opposite directions. Thus, when the piston rod is pushed or pulled against the coil, the coil would resist movement of the piston rod. A piston may be coupled to a frame and a wheel of an arm exercise assembly. A piston may have a piston rod couple to a wheel via a cable, a rod, a wire, or a string. 
     The term “plate” as used herein is defined as a flat structure. A plate may be formed from a flat piece of metal, ceramic, wood, plastic, carbon fiber, or fiber glass. A plate may be capable of being coupled to a spacer. A front plate may cover internal components of an arm exercise assembly in front, e.g., spacers, coils, locks, portions of a handle, or sensors. A back plate may cover internal components of an arm exercise assembly from behind. A plate may have an inner surface, an outer surface, one or more apertures, and/or one or more grooves. A plate may have an inner surface and an outer surface, wherein the portions of a lock may be removably coupled to the inner surface of the plate. A plate may have an inner surface and an outer surface, wherein one or more spacers may be in physical contact with the inner surface of the plate. A plate may have an inner surface and an outer surface, wherein a threaded assembly may be in physical contact with outer surface of the plate. 
     The term “pressure” as used herein is defined as force per unit area. Pressure may be exerted against a surface of a first object, e.g., lock and/or pressure sensor, by a second object, e.g., handle. 
     The term “provide” as used herein as verb is defined as make available, furnish, supply, equip, or cause to be placed in position. 
     The term “protrusion” as used herein is defined as a structure and/or projection extending from an object or structure. A protrusion may be received in an aperture. An object may be coupled to a protrusion. For example, a piston may be coupled to a protrusion of a frame of an arm exercise assembly. Additionally, a bracket may be coupled to protrusion of a frame of an arm exercise assembly. 
     The term “push” as used as a verb herein is defined as apply force e.g., towards and/or against an object or structure, directly or indirectly. Pushing may compel, e.g., urge, cause, influence, force, and/or press, displacement of an object; however, the object may or may not be displaced. A first object pushing a second object may transfer force to the second object. For example, a person pushing a portion, e.g., post, of a handle against a pressure sensor may transfer force to the pressure sensor. A first object pushing a second object may cause the second object to push a third object, directly or indirectly. For example, a person pushing a portion, e.g., post and/or a guide, of a handle against a coil may cause the coil to push against a lock, directly or indirectly. A first object directly pushing a second object may physically touch the second object. A first object indirectly pushing a second object may physically touch a medium that physically touches the second object; the medium may be a structure, e.g., coil, guide, washer, spacer, or seal. 
     The term “plunger” as used herein is defined as a structure configured for actuating a lock. A plunger may have a stem. A plunger may have a stem having a tapered profile. A plunger may have a stem having a diameter smaller than that of the rest of the plunger. A plunger may have a radiused portion. A plunger and a stem may be two separate pieces that are coupled, e.g., via threads, welding, glue, or melting. A plunger may have a cap coupled to each end of the plunger. 
     The term “radiused” as used herein is defined as having a contour that is curved, semicircle, and/or hemispherical. Radiused surfaces may be concave or convex. 
     The term “screen” as used herein means a structure configured to display text, characters, symbols, and/or images. A screen is preferably coupled to a plate of a wheel. A screen may extend through a plate of a wheel. A screen is preferably flat. A screen can be flexible or rigid. A screen can have any of a variety of shapes, and is preferably rectangular or square, but may also be elliptical or circular. 
     The term “sensor” as used herein is structure for receiving signals. A signal may be of an electrical or a physical nature. Examples of an electrical signals may include a first conductive structure receiving electricity second conducted structure. Examples of physical signals may include physical contact, pressure applied against structure, and force, e.g., magnetism, applied to a structure. A sensor may be an electrode. A sensor may sense electric current, voltage, pressure, light, heat, motion, magnetism, or magnetic orientation. A sensor may be carbon-based, metal-based, or metal oxide-based. A carbon-based sensor may be made from polyacrylonitrile-based carbon fibers, pitch-based carbon fibers, rayon-based carbon fibers, vitreous carbon, carbon nanotubes, carbon nanocoils, carbon nanowires, carbon nanofibers, carbon whiskers, and/or graphite fibrils. A sensor may be one or more strips of polymer that includes polypyrroles, polythiophenes, polyanilines, polyacetylenes, poly-p-phenylenes, and derivatives thereof. Types of polythiophene polymers may include poly (3,4-ethylenedioxy thiophene) (PEDT) and poly (styrenesulfonate) (PEDOT-PSS). A metal-based sensor may be one or more fibers or nanowires made from metal or alloy, e.g., gold, platinum, silver, nickel, silicon, stainless steel, copper, brass, aluminum, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, manganese, technetium, rhenium, iron, osmium, cobalt, zinc, scandium, boron, gallium, indium, silicon, germanium, tin, and/or magnesium. A metal oxide-based sensor may be one or more fibers or nanowires made from metal oxide or metal oxide composites. A sensor may be coupled to a frame. A sensor may be coupled to an inner surface of a frame. A sensor may be a dry sensor (requiring no contact gel). A printer may print and/or spray conductive material onto a portion of an arm exercise assembly to form a sensor thereon. 
     The term “sleeve” as used herein is defined as a tubular configured for removable coupling to a handle. A sleeve may have a diameter greater than that of a handle. A sleeve may be constructed from various material, e.g., rubber, plastic, carbon fiber, fiber glass, wood, or metal. A sleeve may be coupled to a handle. A sleeve may be cylindrical. A sleeve may have a cut, e.g., opening, extending longitudinally from the ends of the sleeve. Thus, a handle may be inserted through the cut in the sleeve. Accordingly, the sleeve may be removably wrapped around the handle. When couple to a handle, a sleeve would increase the diameter of the handle. 
     The term “spacer” as used herein is defined as any solid or semi-solid structure. Preferably, a spacer is a structure capable of being removably coupled to an inner surface of a plate. More preferably, a spacer is coupled to two plates with opposing surfaces that face one another. In some cases, removable coupling of a spacer to a plate may prevent the plate from shifting or separating relative to the spacer, or at least substantially inhibit such movement. A spacer may be an arcuate wall (see, e.g.,  128 ,  FIG. 3  and  FIG. 4 ). In certain cases, multiple arcuate walls (spacers) may be located in certain spaces between different assemblies that are part of an exercise assembly. A spacer may be a wall or may alternatively be a cylindrical, polygonal, and/or irregular structure, or a tubular structure, rod, polygonal cube, or walls having irregular contours. A spacer may be elongated. A spacer may be solid. A spacer may alternatively be formed from multiple smaller, interconnected subunits, and preferably remains rigid. 
     The term “strap” as used herein means a flexible structure, e.g., configured for fastening and/or coupling a human forearm to an arm exercise assembly. A strap may be continuous. A strap may be flat and may have a long side and a short side. A strap may be constructed from any one of various materials, e.g., leather, Kevlar, cotton, and/or hemp. A strap may be folded into adjacent segments capable of being coupled (e.g., via Velcro, a hoop, or a ring) to form two or more plies. A strap may be constructed from to separate strap segments sutured to together. 
     The term “surface” as used herein is defined as any face of a structure. A surface may also refer to that flat or substantially flat area that is extended radially around a cylinder which may, for example, be part of a rotor or bearing assembly. A surface may also refer to that flat or substantially flat area that extend radially around a cylindrical structure or object which may, for example, be part of a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, and/or a tubular. A surface may have irregular contours. A surface may be formed from coupled components, e.g., a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, and/or a tubular. Coupled components may form irregular surfaces. A plurality of surfaces may be connected to form a polygonal cross-section. An example of a polygonal cross-section may be triangular, square, rectangular, pentagonal, hexagonal, or octagonal. 
     The term “tapered” as used herein is defined as extending from a first point to a second point while become progressively smaller, e.g., in radius, and/or thinner from the first point to the second point. Structures that are tapered may have a profile that is beveled, frustoconical, and/or conical. Structures that are tapered may be cylindrical. 
     The term “threaded” as used herein is defined as having threads. Threads may include one or more helical protrusions or grooves on a surface of a cylindrical object. Each full rotation of a protrusion or groove around a threaded surface of the object is referred to herein as a single “thread.” Threads may be disposed on any cylindrical structure or object including a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, and/or a tubular. Threads formed on an inner surface of an object may be referred to as “box threads.” Threads formed on an outer surface of an object may be referred to as “pin threads.” A threaded assembly may include a “threaded portion” wherein a section of the threaded assembly includes threads, e.g., pin threads or box threads. A threaded portion may have a diameter sized to extend through an aperture of a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, and/or a tubular. In certain cases, a threaded portion of a first object may be removably coupled to a threaded portion of a second object. 
     The term “threaded assembly” as used herein is defined as an assembly that includes threads, and preferably also includes one or more nuts, one or more bolts, one or more washers, and/or one or more spacers used for coupling two objects together. A nut, a washer, and a spacer may, for example, share a common central axis line. A nut may have a threaded inner surface that may mesh with outer threads on an object, e.g., threaded portion of a bolt or screw. 
     The term “tubular” as used herein is defined as a structure having an inner surface and an outer surface. A tubular may have an aperture disposed therethrough. Preferably, a tubular is cylindrical. Examples of a tubular may a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, and/or a lock. However, any or all tubulars of an assembly may have polygonal cross-sections, e.g., triangular, rectangular, pentagonal, hexagonal, or octagonal. 
     The term “unitary” as used herein defined as having the nature, properties, or characteristics of a single unit. For example, a handle and a frame that are individual parts of a frame may be unitary in the sense they are not separate but rather are formed from a single piece of material, e.g., rubber, plastic, carbon fiber, ceramic, or metal. In another example, a post and a guide that are individual parts of a handle may be unitary in the sense they are not separate but rather are formed from a single piece of material, e.g., plastic, carbon fiber, ceramic, or metal. 
     The terms “upper,” “lower,” “top,” “bottom” as used herein are relative terms describing the position of one object, thing, or point positioned in its intended useful position, relative to some other object, thing, or point also positioned in its intended useful position, when the objects, things, or points are compared to distance from the center of the earth. The term “upper” identifies any object or part of a particular object that is farther away from the center of the earth than some other object or part of that particular object, when the objects are positioned in their intended useful positions. The term “lower” identifies any object or part of a particular object that is closer to the center of the earth than some other object or part of that particular object, when the objects are positioned in their intended useful positions. For example, a frame, a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, a piston, and/or a tubular may each have an upper end and a lower end. Additionally, a cylindrical object, e.g., a, a frame, a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, a piston, and/or a tubular, may have an upper portion and a lower portion. The term “top” as used herein means in the highest position, e.g., farthest from the ground. The term “bottom” as used herein means in the lowest position, e.g., closest the ground. For example, a cylindrical object, e.g., a, a frame, a wheel, a plate, a spacer, a housing, a plunger, a handle, a guide, a lock, a piston, and/or a tubular, may have a top portion and a bottom portion. 
     The term “wheel” as used herein is defined as a structure configured for coupling to a frame, a handle, and/or one or more locks. A wheel may be pivotably coupled to a bracket. A wheel may be cylindrical. A wheel may be tubular. A wheel may include two plates and two spacers. A wheel may have grooves. A wheel may have apertures configured to receive one or more portions of a handle, one or more locks, and/or coils. A wheel may have a plate having pairs of grooves disposed therein. A wheel may have pairs of grooves positioned 12, 13, 14, 15, 16, 17 or 18 degrees apart relative to the central axis of the wheel. Preferably, a wheel has pairs of grooves positioned 15 degrees apart relative to the central axis of the wheel. A wheel may have a central axis point and pairs of grooves each having a central axis, wherein the central axes form an angle ranging from 0. 0.2094 radian, 0.226893 radian, 0.2443 radian, 0.2618 radian, 0.2792 radian, 0.2967 radian to 0.3141 radian, or larger. Preferably, a wheel has a central axis point and pairs of grooves each having a central axis, wherein the central axes form an angle that is 0.2618 radian. 
     3. Certain Specific Embodiments 
     The disclosure herein includes a method of exercising a human arm, which method may include: 1) providing an arm exercise assembly, comprising: a) a frame; b) a wheel coupled to the frame; c) two locks disposed on the wheel; and d) a handle coupled to the wheel; 2) coupling the two locks to the wheel; and 3) abutting the handle against one or both of the two locks. 
     The disclosure herein includes a method of exercising a human arm, which method may include: 1) providing an arm exercise assembly, comprising: a) a frame shaped and sized to receive a human forearm; b) a wheel coupled to the frame; c) two locks disposed on the wheel; and d) a handle coupled to the wheel; 2) coupling the two locks to the wheel; and 3) abutting the handle against one or both of the two locks. 
     The disclosure herein includes a method of exercising a human arm, which method may include: pulling a lock away from a central axis of a wheel of an arm exercise assembly; sliding a lock along the wheel; pushing the lock towards the central axis of the wheel; coupling the lock to the wheel; pivoting a handle pivotably coupled to the wheel; and pressing the handle against the lock. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a wheel pivotably coupled to the frame; two locks slidably coupled to the wheel, wherein the handle may be capable of being abutted against one or both of the two locks. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket; two locks extending radially through the wheel toward inner portions of the wheel; and a handle pivotably coupled to the wheel, wherein the handle may be capable of being abutted against one or both of the two locks. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket, the wheel having an aperture; a first lock disposed in the aperture; a second lock disposed in the aperture; and a handle pivotably coupled to the wheel, wherein the handle may be capable of being abutted against the first lock, the second lock, or both. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a piston coupled to the frame; a bracket pivotably coupled to the frame; a wheel coupled to the piston and pivotably coupled to the bracket, the wheel having an aperture; a first lock slidably coupled to a handle; a second lock slidably coupled to the wheel; and a wheel coupled to the piston and pivotably coupled to the wheel, the handle comprising: a first portion capable of being abutted against the first lock; and a second portion capable of being abutted against the second lock. 
     The disclosure herein includes an arm exercise assembly, which arm exercise assembly may include: a frame shaped and sized to receive a human forearm; a bracket pivotably coupled to the frame; a wheel pivotably coupled to the bracket; a lock extending through the wheel towards a central axis of the wheel; and a handle pivotably coupled to the wheel, wherein the handle is capable of being abutted against the lock. 
     In any one of the methods or structures disclosed herein, the frame may be cylindrical. 
     In any one of the methods or structures disclosed herein, the frame may include: an upper brace; and a lower brace coupled to the upper brace. 
     In any one of the methods or structures disclosed herein, the frame may include an upper brace having a brace handle. 
     In any one of the methods or structures disclosed herein, the bracket may be coupled to an upper brace of the frame. 
     In any one of the methods or structures disclosed herein, the bracket is coupled to a protrusion of the frame. 
     In any one of the methods or structures disclosed herein, the bracket may be pivotable relative to the frame. 
     In any one of the methods or structures disclosed herein, the wheel may be pivotable relative to the bracket. 
     In any one of the methods or structures disclosed herein, the handle may further include a post capable ingress, egress, or both, through an aperture of the handle. 
     In any one of the methods or structures disclosed herein, the lock may be removably coupled to the wheel. 
     In any one of the methods or structures disclosed herein, the lock may have a portion extended into a groove of the wheel. 
     In any one of the methods or structures disclosed herein, the lock may have a portion capable of ingress into or egress from a groove of the wheel. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a guide coupled to the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a guide slidably disposed in the wheel, wherein the guide is coupled to the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include comprising a coil disposed in the wheel. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include: a guide coupled to the handle; and a coil disposed between the guide and the lock. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a strap coupled to the frame. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a strap coupled to a lower brace of the frame. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a piston coupled to the frame and the wheel. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a piston coupled to the frame, the piston having a cable coupled to the wheel. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a sleeve removably coupled to the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a sleeve having a diameter greater than a diameter of the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a pressure sensor coupled to a lock of the two locks. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a pressure sensor disposed between the lock and the first post of the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a pressure sensor capable of being abutted against the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include a pressure sensor capable of being abutted against a post of the handle. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include: a pressure sensor coupled to the lock; and a screen electrically coupled to the pressure sensor. 
     In any one of the methods or structures disclosed herein, the arm exercise assembly may further include: a pressure sensor coupled to the lock; and a screen electrically coupled to the pressure sensor and coupled to the wheel. 
     In any one of the methods or structures disclosed herein, the wheel may include a pair of grooves, wherein the pair of grooves and a central axis of the wheel define an angle between 0.2094 radian and 0.3141 radian. 
     In any one of the methods or structures disclosed herein, the wheel wheel may include a pair of grooves, wherein the pair of grooves may be between 12 to 18 degrees apart relative to a central axis of the wheel. 
     In any one of the methods or structures disclosed herein, the handle has a portion disposed between the first lock and the second lock. 
     In any one of the methods or structures disclosed herein, the wheel may further include: a first coil capable of being abutted against the handle and the first lock; and a second coil capable of being abutted against the handle and the second lock. 
     In any one of the methods or structures disclosed herein, the wheel may further include: a first plate; and a second plate, wherein the first lock and the second lock may be disposed between the first plate and the second plate. 
     In any one of the methods or structures disclosed herein, the wheel may further include: a first plate having a first groove; and a second plate having a second groove aligned with the first groove, wherein the first lock and the second lock are may be disposed between the first groove and the second groove. 
     Any one of the methods disclosed herein may further include pivoting the handle on the central axis of the wheel. 
     Any one of the methods disclosed herein may further include pivoting a bracket relative to a frame. 
     Any one of the methods disclosed herein may further include pivoting the wheel relative to a bracket. 
     Any one of the methods disclosed herein may further include pulling a piston. 
     Any one of the methods disclosed herein may further include holding a brace handle. 
     Any one of the methods disclosed herein may further include strapping a human forearm to a frame. 
     Any one of the methods disclosed herein may further include pushing the handle against a pressure sensor. 
     Any one of the methods disclosed herein may further include pushing the handle against a pressure sensor coupled to the wheel. 
     Any one of the methods disclosed herein may further include transferring electric current through an electrode. 
     Any one of the methods disclosed herein may further include actuating a motor disposed on the handle. 
     Any one of the methods disclosed herein may further include resisting, with a coil, the pressing of the pressing of handle against the lock. 
     Any one of the methods disclosed herein may further include displaying an amount of pressure being pressed against a sensor. 
     Any one of the methods disclosed herein may further include displaying, on a screen, an amount of pressure being pressed against the pressure sensor. 
     Any one of the methods disclosed herein may further include pulling one or both of the two locks away from the central axis of the wheel. 
     Any one of the methods disclosed herein may further include pushing one or both of the two locks towards the central axis of the wheel. 
     Any one of the methods disclosed herein may further include sliding one or both of the two locks on the wheel. 
     Any one of the methods disclosed herein may further include sliding one or both of the two locks in an aperture of the wheel. 
     Any one of the methods disclosed herein may further include locking one or both of the two locks to the wheel. 
     Any one of the methods disclosed herein may further include pivoting the handle relative to the wheel. 
     Any one of the methods disclosed herein may further include pivoting the handle on the central axis of the wheel. 
     Any one of the methods disclosed herein may further include resisting pivoting of the handle. 
     Any one of the methods disclosed herein may further include: abutting a first portion of the handle against a first lock of the two locks; and abutting a second portion of the handle against a second lock of the two locks. 
     Any one of the methods disclosed herein may further include abutting the handle against a sensor. 
     Any one of the methods disclosed herein may further include pushing the handle against a sensor. 
     Any one of the methods disclosed herein may further include pushing the handle against a sensor coupled to a lock of the two locks. 
     Any one of the methods disclosed herein may further include pivoting the wheel relative to the frame. 
     Any one of the methods disclosed herein may further include pivoting the wheel laterally. 
     Any one of the methods disclosed herein may further include pivoting the wheel up or down. 
     Any one of the methods disclosed herein may further include resisting pivoting of the wheel. 
     Any one of the methods disclosed herein may further include transferring electric current through an electrode disposed on the frame. 
     Any one of the methods disclosed herein may further include vibrating the handle. 
     Any one of the methods disclosed herein may further include actuating a motor disposed on the handle. 
     Any one of the methods disclosed herein may further include pulling a piston coupled to the frame and the wheel. 
     4. Specific Embodiments in the Drawings 
     The drawings presented herein are for illustrative purposes only and do not limit the scope of the claims. Rather, the drawings are intended to help enable one having ordinary skill in the art to make and use the claimed inventions. 
     This section addresses specific versions of arm exercise assemblies shown in the drawings, which relate to assemblies, elements and parts that can be part of an arm exercise assembly, and methods for developing and strengthening human arms. Although this section focuses on the drawings herein, and the specific embodiments found in those drawings, parts of this section may also have applicability to other embodiments not shown in the drawings. The limitations referenced in this section should not be used to limit the scope of the claims themselves, which have broader applicability. 
     Although the methods, structures, elements, and parts described herein have been described in detail, it should be understood that various changes, substitutions, and alterations can be made without departing from the spirit and scope of the inventions as defined by the following claims. Those skilled in the art may be able to study the preferred embodiments and identify other ways to practice the inventions that are not exactly as described herein. It is the intent of the inventor that variations and equivalents of the inventions are within the scope of the claims, while the description, abstract and drawings are not to be used to limit the scope of the inventions. The inventions is specifically intended to be as broad as the claims below and their equivalents. 
       FIG. 1  illustrates a perspective view of an arm exercise assembly  100 . The arm exercise assembly  100  is a solid object or structure. Therefore, the arm exercise assembly  100  may be illustrated on a three-dimensional coordinate system having an x-axis  102  (length), y-axis  104  (height), and z-axis  106  (depth). Additionally, the x-axis  102  of the arm exercise assembly  100  may also be the central axis  102  of the arm exercise assembly  100 . Thus, the x-axis  102  and the central axis  102  of the arm exercise assembly may be used interchangeably. 
     Referring to  FIG. 1  and  FIG. 2 , the arm exercise assembly  100  may include a frame  110 , a bracket  112 , and a wheel  114 . The frame  110  may include an upper brace  118 , a lower brace  120 , a brace handle  122 , and a protrusion  124 . The upper brace  118  may have one or more electrodes  142  disposed thereon. The one or more electrodes  142  may be disposed on an inner surface of the upper brace  118 . The lower brace  120  may have one or more electrodes  144  disposed thereon. The one or more electrodes  144  may be disposed on an inner surface of the lower brace  120 . The electrodes  142 ,  144  may be coupled to a power supply (not shown). The power supply may be one or more batteries. The power supply may be coupled to a switch  146 . 
     The brace handle  122  may extend from the upper brace  118 , e.g., perpendicular to the x-axis  102 . The brace handle  122  and the upper brace  118  may be unitary. 
     The protrusion  124  may extend from the upper brace  118  e.g., parallel to the x-axis  102 . The protrusion  124  and the upper brace  118  may be unitary. 
     The bracket  112  may be pivotably coupled to the protrusion  124  of the frame  110 . The bracket  112  may have an arch  113 . The arch  113  may be pivotably coupled to the protrusion  124  via a pin, screw, or bolt. Accordingly, the bracket  112  may be pivoted on the y-axis  104 . In other words, the bracket  112  may be pivoted lateral to, e.g., to a side of, the arch  113 . 
     Additionally, the bracket  112  may have arms  116   a ,  116   b . The arms  116   a ,  116   b  may be pivotably coupled to the arch  113 . The arms  116   a ,  116   b  may be pivoted on the z-axis  106  relative to the arch  113 . In other words, the arms  116   a ,  116   b  may be pivoted up and/or down relative to the frame  110 . 
     The arms  116   a ,  116   b  may be pivotably coupled to the wheel  114 . Each arm  116  may be coupled to a side of the wheel  114 . Accordingly, the wheel  114  may be pivoted on a z′-axis  108 . In other words, the wheel  114  may be pivoted up and/or down relative to the bracket  112 . 
     In addition, the wheel  114  may include plates  126   a ,  126   b , an outer spacer  128   a , and inner spacers  128   b ,  128   c  ( FIG. 3 ). The plates  126   a ,  126   b  may be circular. Each plate  126  may have an aperture dispose therethrough. The apertures in the plates  126   a ,  126   b  may be aligned. Thus, a human hand may extend through the apertures. 
     The plates  126   a ,  126   b  may be coupled (via bolts or screws) to the spacers  128   a - c . Inner surfaces  132   a ,  132   b  of the plates the plates  126   a ,  126   b  and the outer spacer  128   a  may define an outer aperture  134   a . The inner surfaces  132   a ,  132   b  and the inner spacers  128   b ,  128   c  may define a first inner aperture  134   b  and a second inner aperture  134   c  (see  FIG. 3  and  FIG. 4 ). 
     The handle  130  may have a first post  136   a  disposed between the plates  126   a ,  126   b  and ends of the outer spacer  128   a . In other words, the first post  136   a  may be disposed through the outer aperture  134   a  because the plates  126   a ,  126   b  and the outer spacer  128   a  may define the outer aperture  134   a . The first post  136   a  may be slid within the aperture  134   a ,  134   b  along the inner surfaces  132   a ,  132   b  of the plates  126   a ,  126   b.    
     In addition, the arm exercise assembly  100  may include a piston  140 . The piston  140  may be coupled to the upper brace  118 . The piston  140  may include a cable  138 . The cable  138  may be coupled (via a hook, bolt, or screw) to the wheel  114 . The cable  138  may be coupled to an outer surface of the plate  126   a . The outer surface may be opposite the inner surface  132   a  of the plate  126   a . The piston  140  may provide resistance to movement of the wheel  114 . 
     Referring to  FIG. 2 , the arm exercise assembly  100  may include a strap  202 . The strap  202  may be coupled to the frame  110 . The strap  202  may be couple to the lower brace  120  of the frame  110 . 
       FIG. 3  illustrates a cross-sectional view of a wheel  114 . The wheel  114  may include a first plate  126   a , a second plate  126   b  ( FIG. 1  and  FIG. 2 ), an outer spacer  128   a , and inner spacers  128   b ,  128   c . The second plate  126   b  is omitted to illustrate internal components of the wheel  114 . The plates  126   a ,  126   b  may be circular. Furthermore, the plates  126   a ,  126   b  may be coupled to the spacers  128   a - c.    
     The first plate  126   a  may have a first set of grooves  302   a - i . Each groove  302  may extend laterally through the first plate  126   a , completely or partially. Each adjacent pair of grooves  302  may have central axes spaced 15 degrees apart relative to the central axis of the first plate  126   a . For example, the central axis of the groove  302   b  and the central axis of the groove  302   c  may be spaced 15 degrees apart relative to the central axis of the first plate  126   a . In other words, the angle formed by the central axis of the groove  302   b , the central axis of the groove  302   c , and the central axis of first plate  126   a  may form an angle that is 0.2618 radian. 
     Also, the first plate  126   a  may have a second set of grooves  304   a - i . Each groove  304  may extend laterally through the first plate  126   a , completely or partially. Each adjacent pair of groove  304  may have central axes spaced 15 degrees apart relative to the central axis of the first plate  126   a . For example, the central axis of the groove  304   b  and the central axis of the groove  304   c  may be spaced 15 degrees apart relative to the central axis of the first plate  126   a . In other words, the angle formed by the central axis of the groove  304   b , the central axis of the groove  304   c , and the central axis of the first plate  126   a  may form an angle that is approximately 0.2618 radian. 
     Although not shown, it should be understood that the second plate  126   b  may have a first set of grooves  302   a ′- i ′ corresponding to the first set of grooves  302   a - i  of the first plate  126   a . Also, the second plate  126   b  may have a second set of grooves  304   a ′- i ′ corresponding to the second set of grooves  304   a - i  of the first plate  126   a.    
     In addition, screens  308   a ,  308   b  be may be coupled to the first plate  126   a . The screens  308   a ,  308   b  may be configured to face towards a frame  110  ( FIG. 1 ) of the arm exercise assembly  100 . Each screen  308  may be electrically connected (via electrical wires  306 ) to a pressure sensor  408 . Each screen  308  would display the amount of pressure applied to a respective pressure sensor  408 . For example, when the handle  106  is abutted against the pressure sensor  408 , the pressure sensor  408  may send a signal, e.g., via an electric wire, to a respective screen  308 . The screen  308  would display a number corresponding to the pressure applied to pressure sensor  408 . 
       FIG. 4  illustrates a cross-sectional view of a handle  130  and locks  406   a ,  406   b  coupled to a wheel  114 . The wheel  114  may include a first plate  126   a , a second plate  126   b  ( FIG. 2 ), an outer spacer  128   a , and inner spacers  128   b ,  128   c . The first plate  126   a  may be coupled to one end of each the spacers  128   a - c . Although omitted to illustrate internal components of the wheel  114 , the second plate  126   b  may be coupled to an opposite end of each of the spacers  128   a - c . The plates  126   a ,  126   b  may be coupled to the spacers  128   a - c  via bolts or screws. The first plate  126   a , the second plate  126   b , the outer spacer  128   a , and the inner spacers  128   b ,  128   c  may define a channel  402 , an outer aperture  134   a , and a first inner aperture  134   b , and a second inner aperture  134   c.    
     A first post  136   a  of the handle  130  may extend though the apertures  134   a ,  134   b . In other words, the first post  136   a  may be disposed between inner surfaces  132   a ,  132   b  of the plates  126   a ,  126   b , the outer spacer  128   a , and the inner spacers  128   b ,  128   c . A second post  136   b  of the handle  130  may extend though the second inner aperture  134   c . In other words, the second post  136   b  may be disposed between inner surfaces  132   a ,  132   b  of the plates  126   a ,  126   b  and the inner spacers  128   b ,  128   c.    
     Accordingly, the posts  136   a ,  136   b  may be slid along the inner surfaces  132   a ,  132   b  of the plates  126   a ,  126   b , respectively. Thus, the handle  130  may be pivotably coupled to the wheel  114 . Moreover, the handle  130  may be pivoted on an x-axis  102  (see  FIG. 1 ) of the arm exercise assembly  100 . 
     In addition, a motor  412  may be disposed on or in the handle  130 . The motor  412  may be electrically couple to a power supply (not shown) and a switch  414 . The power supply and/or the switch  414  may also be disposed on or in the handle  130 . 
     Furthermore, each lock  406  may have a pressure sensor  408  coupled thereto. Each pressure sensor  408  may be electrically connected (via an electrical wire  306 ) to a screen  308  ( FIG. 3 ). 
     The handle  130  may have a guide  404 . The guide  404  may be disposed in the channel  402 . The guide  404  may be slid in the channel  402 . A post  136   b  of the handle  130  may be coupled to the guide  404 . In some versions, the handle  130  and the guide  404  may be unitary. 
     A first lock  406   a  and a second lock  406   b  may be disposed in the outer aperture  134   a . In addition, the first lock  406   a  and the second lock  406   b  may be disposed in the first inner aperture  134   b . The locks  406   a ,  406   b  may each have a portion, e.g., ball bearing, peg, rod, or pin, extended into a respective first groove  302  in each of the plates  126   a ,  126   b  (see  FIGS. 5A-B ). The locks  406   a ,  406   b  may each have a portion, e.g., ball bearing, peg, rod, or pin, extended into a respective second groove  304  in each of the plates  126   a ,  126   b  (see  FIGS. 5A-B ). 
     A first coil  410   a  may be disposed between the guide  404  and the first lock  406   a . A second coil  410   b  may be disposed between the guide  404  and the second lock  406   b . The coils  410   a ,  410   b  may be coupled to the guide  404 . Additionally, the first coil  410   a  may be abutted against the guide  404  the first lock  406   a . Additionally, the second coil  410   b  may be abutted against the guide  404  and the second lock  406   b.    
       FIG. 5A  illustrates a cross-sectional side view of a lock  406  in a locked configuration disposed in a wheel  114 . The plates  126   a ,  126   b  may define an outer aperture  134   a  and a first inner aperture  134   b . The aperture  134   a  may be defined by a first surface  132   a  of the first plate  126   a , a second surface  132   b  of the second plate  126   b , and an outer spacer  132   a  (see  FIG. 3  and  FIG. 4 ). The apertures  134   a ,  134   b  may be defined by a first surface  132   a  of the first plate  126   a , a second surface  132   b  of the second plate  126   b , and inner spacers  132   a ,  132   b  (see  FIG. 3  and  FIG. 4 ). 
     Grooves  302   a ,  304   a  may be disposed in the first plate  126   a . Grooves  302   a ′,  304   a ′ may be disposed in the second plate  126   b . The grooves  302   a ,  304   a  may be aligned radially relative to the wheel  114 . The grooves  302   a ,  302   a ′ may be aligned longitudinally relative to the wheel  114 . 
     The lock  406  may include a housing  502 , a plunger  504 , and pins  506   a - d . The housing  502  may include apertures  508   a - d  disposed therethrough. The apertures  508   a - d  may be aligned with grooves  302   a ,  302   a ′,  304   a ,  304   a ′, respectively. A first portion of the pin  506   a  may be disposed within the groove  302   a . A first portion of the pin  506   b  may be disposed within the groove  302   a ′. A first portion of the pin  506   c  may be disposed within the groove  304   a . A first portion of the pin  506   d  may be disposed within the groove  304   a′.    
     A second portion of each pin  506  may be disposed in a respective aperture  508  of the housing  502 . 
     The plunger  504  may be abutted against the pins  506   a - d . Accordingly, the pins  506   a - d  may be abutted against the plates  126   a ,  126   b , respectively. In the locked position, the lock  406  may be inhibited from movement relative to the wheel  114 . 
       FIG. 5B  illustrates a cross-sectional side view of a lock  406  in an unlocked configuration disposed in a wheel  114 . The plates  126   a ,  126   b  may define an outer aperture  134   a  and a first inner aperture  134   b . The aperture  134   a  may be defined by a first surface  132   a  of the first plate  126   a , a second surface  132   b  of the second plate  126   b , and an outer spacer  132   a  (see  FIG. 3  and  FIG. 4 ). The apertures  134   a ,  134   b  may be defined by a first surface  132   a  of the first plate  126   a , a second surface  132   b  of the second plate  126   b , and inner spacers  132   a ,  132   b  (see  FIG. 3  and  FIG. 4 ). 
     Grooves  302   a ,  304   a  may be disposed in the first plate  126   a . Grooves  302   a ′,  304   a ′ may be disposed in the second plate  126   b . The grooves  302   a ,  304   a  may be aligned radially relative to the wheel  114 . The grooves  302   a ,  302   a ′ may be aligned longitudinally relative to the wheel  114 . 
     The lock  406  may include a housing  502 , a plunger  504 , and pins  506   a - d . The housing  502  may include apertures  508   a - d  disposed therethrough. The apertures  508   a - d  may be aligned with grooves  302   a ,  302   a ′,  304   a ,  304   a ′, respectively. Each pin  506  may be disposed in a respective aperture  508  of the housing  502 . 
     In addition, the plunger  504  may have stems  510   a ,  510   b . The plunger  504  may have a first diameter. Each stem  510  may have a second diameter. The second diameter may be smaller than that of first diameter. In the unlocked position, the stem  510   a  may be aligned with the apertures  508   a ,  508   b  of the housing  502  and the grooves  302   a ,  302   a ′. Also, the stem  510   b  may be aligned with the apertures  508   c ,  508   d  of the housing  502  and the grooves  304   a ,  304   a′.    
     Thus, in the unlocked position, the pins  506   a - d  may be pushed (via the surfaces  132   a - d  of the respective plates  126   a ,  126   b ) away from the grooves  302   a ,  302   a ′,  304   a ,  304   a ′. Moreover, the pins  506   a - d  may be abutted against the stems  510   a ,  510   b , respectively. In some cases, the pins  506   a - d  may not inhibit movement of the lock  406  relative to the wheel  114 . Thus, the lock  406  may be slid along the apertures  134   a ,  134   b  of the wheel  114 . 
     Referring to  FIGS. 1-6 , a person may use the arm exercise assembly  100  as follow. First, the person may insert an arm and hand through, e.g., along an x-axis  102 , a frame  110  of the arm exercise assembly  100 . Next, the person may grasp a handle  130 . The person may removably couple the arm exercise assembly  100  to his or her arm with a strap  202 . The person may grasp the handle  130  to make a fist. 
     The person&#39;s arm may be in physical contact with electrodes  142 ,  144  disposed on an upper brace  118  and a lower brace  120 , respectively. 
     Afterwards, the person may configure an arm exercise. First, the person may pull a plunger  504  of a first lock  406   a . The pulled plunger  504  may have stems  510   a ,  510   b  aligned with apertures  508   a - d  of the housing  502 , grooves  302   a ,  302   a ′,  304   a ,  304   a ′ of the wheel  114 , and pins  506   a - d . Next, the person may move the first lock  406   a  along apertures  134   a ,  134   b  in the wheel  114 . The displaced first lock  406   a  may cause the pins  506   a - d  to be abutted against respective plates  126   a ,  126   b . The plates  126   a ,  126   b  may be abutted against the pins  506   a - d . Abutting the pins  506   a - d  against the plates  126   a ,  126   b  may cause the pins  506   a - d  to be pushed toward the stems  510   a ,  510   b , respectively. Thus, in some cases, the pins  506   a - d  may not inhibit movement of the first lock  406   a  relative to the wheel  114 . 
     Afterwards, the person may slide the first lock  406   a  towards grooves  302   b ,  302   b ′,  304   b ,  304   b ′ in the wheel  114 . Next, the person may align the first lock  406   a  with the grooves  302   b ,  302   b ′,  304   b ,  304   b ′. The person may then depress the plunger  504 . The depressed plunger  504  may have a portion abutted against the pins  506   a - d . Moreover, depressing the plunger  504  may cause the pins  506   a - d  to be disposed in the groove  302   b ,  302   b ′,  304   b ,  304   b ′, respectively. Thus, the first locks  406   a  may be coupled to the wheel  114 . 
     While holding the handle  130 , the person may pivot his or her fist towards the first lock  406   a . Next, the person may abut a post  136   a  of the handle  130  against the first lock  406   a . Additionally, the person may about the post  136   a  against a pressure sensor  408   a  coupled to the first lock  406   a . The person may further press the post  136   a  against the pressure sensor  408   a . The pressed pressure sensor  408   a  may send a signal to a screen  308   a . The screen  308   a  may display a value indicating the amount of pressure being applied to the pressure sensor  408   a.    
     In addition, while pivoting the handle  130 , the person may also cause a guide  404  to push against a coil  410   b . In turn, the coil may push against a second lock  406   b . The second lock may be coupled to the wheel  114 . Thus, the coil  410   b  may provide resistance against pivoting the handle  130  by the person. 
     Also, the person may flex his or her wrist while grasping the handle  130  to cause the wheel  114  to pivot away from a piston  140 . The piston  140  may be coupled to the wheel  114  via a cable  138 . Thus, the piston  140  may provide resistance against pivoting the wheel  114  by the person. 
     Additionally, the person may removably couple a sleeve  416  around the handle  130  during exercise. 
     Furthermore, the person may actuate, e.g., press, a switch  146 . The actuated switch  146  may complete a circuit between a power supply (not shown) and electrodes  142  disposed on the upper brace  118 . The actuated switch  146  may also complete a circuit between the power supply and electrodes  144  disposed on the lower brace  120 . Electric current may flow from the power supply through the electrodes  142 ,  144  to the person&#39;s forearm. The electric current may stimulate muscles in the person&#39;s arm. 
     Moreover, the person may actuate, e.g., press, a switch  414  on the handle  130 . The actuated switch  414  may complete a circuit between a power supply (not shown) and a motor  412  disposed on the handle  130 . Electric current may flow from the power supply to the motor  412 . The electric current may cause the motor  412  to vibrate. Vibration from the motor  412  may be transferred to the person&#39;s hand that is gripping the handle  130 . 
     To perform a different arm exercise, the person may repeat the steps discussed above with any lock  406  coupled to the wheel  114 .