Patent Publication Number: US-11654324-B2

Title: Sliding grip resistance exercise device

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims priority to and is a divisional of U.S. Nonprovisional patent application Ser. No. 16/449,401 filed Jun. 23, 2019, entitled “Sliding Grip Resistance Exercise Device” 
    
    
     STATEMENT REGARDING FEDERALLY SPONSORED OR DEVELOPMENT 
     Not Applicable 
     THE NAMES OF THE PARTIES TO A JOINT RESEARCH AGREEMENT 
     Not Applicable 
     INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISK 
     Not Applicable 
     BACKGROUND 
     Field of Invention 
     The invention disclosed relates to an exercise device, in particular, a sliding grip resistance exercise device that can be used for but not limited to: medial resistance pull-ups, lateral resistance pull-ups, chin-ups, lower back extension/sit-up assistance exercise. 
     While pull-up bars have long been revered in the fitness industry as a means to work your biceps and upper back in a pull motion, these devices often neglect your triceps in a push motion and your lower back in extension exercises while also assisting you upright in a full motion sit-up. Also, pull-up bars work with vertical resistance, meaning an users own body weight going up and down, vertical along with horizontal resistance allows a user to work their muscles in a more diverse way. This has left users to purchase multiple devices. There has yet to have been a device that will encompass all, until now. 
     Related Art 
     Prior art has consisted of pull-up bars with immobile hand grips that double as a sit-up device; these devices hold the feet of the user flat, once the user is in a horizontal position, or descend back, there is no force that will assist the user back into a vertical position, or ascend up. Prior art has also consisted of pull-up bars with sliding hand grips that do not offer adjustable medial or lateral resistance to work your arms, upper and lower back, with the ability to manually lock hand-grips in a preferred static position, invention disclosed solves that problem. As of now, U.S. Pat. No. 9,044,629 functions as a pull-up bar with sliding grip handles that doubles as a push-up bar with sliding handles. Application publication 2012/0115683 functions as a pull-up bar with two apertures along its frame, two handles protruding from apertures slide along the course of its frame. Current device is disclosed as a pull-up bar, push-up bar, and shoulder press. 
     BRIEF SUMMARY 
     There is a need for a more versatile exercise device that will utilize more muscle groups while exercising. 
     Disclosed fitness device will have at least six rubber pegs attached to its frame, rubber pegs will be utilized for wall and floor support. The cavity of ventral bar supporting handgrips will have two springs, one spring for each respected handgrip. At the lateral ends of each spring will be spring caps, one spring cap will have a protuberance attached to it. The protuberance will allow one spring cap to rotate and compress springs when engaged with handgrips appendage. The protuberance attached to spring caps will also lock into “T” locks if the user would prefer handgrips to be static. Each spring cap protuberance will aid in different exercises depending on the location of spring cap with protuberance, for example, the spring caps with a protuberance at the lateral ends of ventral bar will aid in compressing springs to perform medial sliding pull-ups, while the spring caps with a protuberance at medial ends of ventral bar will compress springs to perform lateral sliding pull-ups or lower back extension/sit-up assistance exercises. 
     Tracks will be placed on top and bottom surface of bar to stabilize and guide hand grips. In another embodiment sliding function will be aided by ball bearings, placed interiorly of handgrips. Also in another variation fitness device will have knobs to adjust resistance of springs. Aforementioned embodiments and variations can also be found in claimed section of disclosure. 
     In another embodiment of disclosed invention, the user will be able to perform a lower back extension exercise with sit-up assistance. By rotating rubber pegs attached to fitness device frame, for optimal floor and wall support. The user will place fitness device on the floor leaning it against a vertical support structure, attach lower back apparatus, and engage fitness device. 
    
    
     
       BRIEF DESCRIPTION OF VIEWS 
         FIG.  1   . Shows a left iso perspective view of fitness device in first embodiment. 
         FIG.  2 A . Shows a front left iso perspective view of fitness device hanging from door frame. 
         FIG.  2 B . Shows a back left iso perspective view of fitness device hanging from door frame. 
         FIG.  3   . Shows a front left iso perspective view of fitness device exploded. 
         FIG.  4 A . Shows a front view of handgrips interior components. Top and bottom projections, and middle appendage. 
         FIG.  4 B . Shows a front view of handgrips exterior component, indentation. Indentation will accept lower back bar connector. 
         FIG.  5 A . Shows a right side view of exploded compression spring cap. 
         FIG.  5 B . Shows a front view of compression spring cap, and how spring cap with the protuberance is capable of rotation. 
         FIG.  6   . Shows a front iso view of spring cap protuberance and handgrip appendage relationship. 
         FIG.  7   . Shows a back left iso view of three ventral bars sectional cut, and direction of sight for upcoming figures,  8 A-F. 
         FIG.  8 A . Shows a back view sectional of ventral bar in medial pull-up position before compression, with metal hatching of bar and locking cap. 
         FIG.  8 B . Shows a back view sectional cut of ventral bar in medial pull-up position halfway compressed, with metal hatching of bar and locking cap. 
         FIG.  8 C . Shows a back view sectional cut of ventral bar in medial pull-up position fully compressed, with metal hatching of bar and locking cap. 
         FIG.  8 D . Shows a back view sectional cut of ventral bar in lateral pull-up position before compression, with metal hatching of bar and locking cap. 
         FIG.  8 E . Shows a back view sectional cut of ventral bar in lateral pull-up position halfway compressed, with metal hatching of bar and locking cap. 
         FIG.  8 F . Shows a back view sectional cut of ventral bar in lateral pull-up position fully compressed, with metal hatching of bar and locking cap. 
         FIG.  9 A . Shows a right iso view of locking cap unlocked from ventral bar. 
         FIG.  9 B . Shows a front view of  FIG.  9 A . To show a different angle of fixtures of locking cap in relation to ventral bar locking fixture. 
         FIG.  9 C . Shows a front view of locking cap locked into ventral bar. 
         FIG.  10 A . Shows a front view of a transparent handgrip compressing spring in medial pull-up position, with arrow indicating path. 
         FIG.  10 B . Shows a front view of a transparent handgrip with compression spring cap in the middle of “T” lock aperture. 
         FIG.  10 C . Shows a front view of a transparent handgrip rotated up into “T” lock aperture, with arrow indicating path of rotation. 
         FIG.  10 D . Shows a front view of a transparent handgrip moving laterally with spring decompressing, arrow indicating path. 
         FIG.  10 E . Shows a front view of a transparent handgrip rotated down and locked into medial arm of “T” lock aperture, with arrow indicating path of rotation. 
         FIG.  11 A . Shows a top view of ventral bar tracks with transparent handgrip at lateral end. 
         FIG.  11 B . Shows a top view of ventral bar tracks with transparent handgrip at medial end. 
         FIG.  12   . Shows a bottom view of ventral bar tracks with transparent handgrip at medial end. 
         FIG.  13   . Shows an iso right view sectional cut of rubber pegs, and direction of sight for upcoming figures,  14 A-B. 
         FIG.  14 A . Shows a front view of rubber peg lying horizontally, with rubber hatching. 
         FIG.  14 B . Shows a front view of rubber peg rotated to stand vertically, with rubber hatching. 
         FIG.  15 A . Shows a left iso view of fitness device in second setting, lower back extension/sit-up assistance, with person in starting position. 
         FIG.  15 B . Shows a right side view of previous  FIG.  15 A  in starting position. 
         FIG.  15 C . Shows a right side view of person engaging lower back extension/sit-up assistance device. 
         FIG.  16   . Shows a front view of how lower back apparatus attaches to handgrips. 
         FIG.  17   . Shows a left iso view perspective of lower back apparatus with hinge encircled. 
         FIG.  18   . Shows a front view perspective of encircled hinge close-up. 
         FIG.  19   . Shows a back left iso view perspective of lower back apparatus, with the back of cushioned surface encircled. 
         FIG.  20   . Shows a back view perspective of sliding mechanism for lower back apparatus close-up. 
         FIG.  21   . Shows a front view perspective of lower back apparatus with pin connecting “X” bars encircled. 
         FIG.  22   . Shows a front view perspective of “X” bar with pin connecting the two. 
         FIG.  23   . Shows a front view of fitness device in second variation, with knobs on lateral ends of device. 
         FIG.  24   . Shows an iso right perspective view of tracks inside cavity of ventral bar in second variation. 
         FIG.  25   . Shows an iso back perspective view of inclusive component ( 857 ) 
         FIG.  26   . Shows an iso right perspective view of inclusive component ( 857 ) exploded. 
         FIG.  27   . Shows an iso close-up perspective of fitness device in another claimed embodiment having ball-bearings on handgrips projection in order to slide. 
         FIG.  28 A . Shows an iso back view perspective of locking cap/knob. 
         FIG.  28 B . Shows an iso front view perspective of locking cap/knob. 
         FIG.  29   . Shows an iso front view perspective of knob being inserted into locking cap. 
         FIG.  30   . Shows an iso front view perspective of exploded key on cylindrical protuberance of knob. 
         FIG.  31   . Shows a left perspective view of how key from knob will be inserted into keyhole of inclusive component ( 857 ). 
         FIG.  32   . Shows a front perspective close-up view of keyhole from inclusive component ( 857 ). 
         FIG.  33 A . Shows a front view of knob when knob is not rotated to add resistance. 
         FIG.  33 B . Shows a front view inside of ventral bar, when knob is not rotated. 
         FIG.  33 C . Shows a front view of knob rotated to add resistance, with arrow indicating direction of rotation. 
         FIG.  33 D . Shows a front view inside of ventral bar, when resistance is added, with arrow indicating direction of rotation. 
     
    
    
     DETAILED DESCRIPTION 
     Detailed description will commence with the first variation of disclosed fitness device, this will entail: how parts are assembled, the process of making, and how one can use the fitness device disclosed. The first variation will be followed by the second variation of claimed fitness device disclosed. The second variation will contain all utilitarian functions of first variation, with adjustable resistance. Also in the detailed description portion, there will be references to certain figures in different embodiments, to set forth how disclosed fitness device can be constructed in many ways without departing from the nature and scope of disclosed fitness device. 
     First Variation 
       FIG.  1   . Shows fitness device  101  in preferred embodiment. Horizontal bars  121 ,  119 A-B, and ventral bar  117 , are shown welded to curved bar  105 ; in a different embodiment horizontal bars  121 ,  119 A-B, and ventral bar  117  would connect to curved bar  105  by means of but not limited to bolts and nuts, for a more ergonomic way of packing fitness device  101 .  FIG.  2 A-B  shows fitness device  101  mounted on doorway  700  to be used for pull-up exercises. Rubber pegs  103 -A will rest on door wall vertically, while rubber pegs  103 B-C rest on door frame vertically ( FIG.  2 A-B ). In a different embodiment ventral bar  117 , may bend at its lateral ends, at an angle no greater than thirty degrees. 
       FIG.  3   . Shows an exploded isometric view of fitness device  101 . Rubber pegs  103 -E will snap on horizontal bars  121 ,  119 A-B, and ventral bar  117  at their respected medial and lateral ends. Compression spring caps  203 B-C will reside in the cavity of ventral bar  117  at its medial end. One end of springs  201 A-B will rest in compression spring caps  203 B-C, while the other end of springs  201 A-B will rest in compression spring caps  203 -A, which will reside in ventral bar  117  lateral ends. 
       FIG.  9 A-C  shows how to lock components into the cavity of ventral bar  117 . User will push locking caps  113 A-B and compression spring caps  203 -A thereby compressing springs  201 A-B; before pushing locking caps  113 A-B fixtures  301 A-B must be at a different angle than locking fixtures  303 -A ( FIG.  9 B ), when fixtures  301 A-B are anterior to locking fixtures  303 -A user will then rotate locking caps  113 A-B until fixtures  301 A-B and locking fixtures  303 -A are aligned ( FIG.  9 C ), slowly decompress spring by decreasing force applied to locking caps  113 A-B, and let go ( FIG.  9 C ). Handgrips  109 -A can either be at ventral bar  117  lateral or medial end to lock in components. In another embodiment rubber pegs  103 D-E will be of the same width of rubber pegs  103 -C. Also, in another embodiment locking caps  113 A-B will be made from plastic. 
       FIG.  4 A-B . Shows one embodiment of handgrips  109 -A, in another claimed embodiment projections  503  and  501  which are used as a sliding mechanism for hand grips  109 -A will be replaced with ball bearings  861  ( FIG.  27   ). Appendage  505  will have dual sides in order to make contact with protuberance  601  ( FIG.  6   ) from compression spring caps  203 B and  203 C for lateral sliding pull-ups ( FIG.  8 D-F ), or lower back extension/sit-up assistance exercise ( FIG.  15 A-C ); or appendage  505  will make contact with protuberance  601  from compression spring caps  203  and  203 A for medial sliding pull-ups ( FIG.  8 A-C ). Each handgrip  109 -A will have indentations  111  to be used with lower back apparatus  817  ( FIG.  16   ). Handgrips  109 -A can be made from metal or plastic and have rubber covering. Handgrips  109 -A will not be limited to cylindrical construct shown with disclosed drawings. Handgrips  109 -A can be constructed to better conform to the user of device, as long as it sticks to the spirit and scope of disclosure stated. 
       FIG.  5 A-B . While a reference for compression spring cap  203  is only named, the following description will also apply to compression spring caps  203 -C since they are indistinguishable.  FIG.  5 A  shows compression spring cap  203  in different states, more specifically  FIG.  5 A  shows an explosive view of compression spring cap  203 : concave spring cap  603  will go inside spring cap with outer rim  205 . Referring now to  FIG.  5 B  concave spring cap  603  and outer rim spring cap  205  are combined to make compression spring cap  203 . Protuberance  601  of spring cap with outer rim  205  will be able to rotate independent of concave spring cap  603 , rotation will be performed by means of appendage  505 . ( FIG.  10 C ,  FIG.  10 E ). 
     Referring back to  FIG.  8 A-F  shows the practical use of fitness device  101  in two different settings. To use for medial sliding pull-ups ( FIG.  8 A-C ), the user will start from a hanging position with handgrips  109 -A positioned at ventral bar  117  lateral ends, user will compress springs  201 A-B ( FIG.  8 B ) (while still hanging) until fully compressed ( FIG.  8 C ) and handgrips  109 -A are at ventral bar  117  medial end, user will then decompress springs  201 A-B while lifting themselves up and creating distance between handgrips  109 -A until handgrips  109 -A are back at lateral starting position, this completes one repetition. In order to switch from medial sliding pull-ups to lateral sliding pull-ups ( FIG.  8 D-F ), handgrips  109 -A will have to be at the lateral ends of ventral bar  117 , the user will then rotate handgrips  109 -A up until projection  503  is in between track  135  ( FIG.  11 A ), and projection  501  is in between track  131  ( FIG.  12   ), then slide handgrips  109 -A down ventral bar  117  to the medial end of ventral bar  117  ( FIG.  11 B ), rotate handgrips  109 -A down and perform exercise. To perform a lateral sliding pull-up ( FIG.  8 D-F ) hang from handgrips  109 -A, slide handgrips  109 -A down ventral bar  117  compressing springs  201 A-B, while doing this the user will be lifting themselves up until springs  201 A-B are fully compressed ( FIG.  8 F ) and handgrips  109 -A are at ventral bar  117  lateral ends; user will then decompress springs  201 A-B by sliding handgrips  109 -A medially down ventral bar  117 , while doing this the user will lower their body from pull-up position until springs  201 A-B are fully decompressed and handgrips  109 -A are returned to medial position in relation to ventral bar  117 , this completes one repetition. While the preferred execution of performing a medial sliding pull-up and lateral sliding pull-up has been disclosed, it should be stated that the user can perform exercises in a variable of ways. Tracks  133 ,  135 ,  131 , and  137  can be welded onto ventral bar  117 . 
     The user will also be able to use fitness device  101  with static handgrips for pull-up exercises, by locking handgrips  109 -A in “T” lock apertures  127 .  FIG.  10 A-E  gives a close-up view of the process,  FIG.  10 A-E  also gives a close-up view of how fitness device  101  works from the perspective of handgrip  109  used in a medial sliding pull-up exercise. User of device will compress spring  201 A which is carried out by appendage  505  pushing protuberance  601  medially down ventral bar  117  ( FIG.  10 A-B ). When compression spring cap  203  reaches the middle of “T” lock aperture  127  ( FIG.  10 B ), the user will rotate handgrip  109  up ( FIG.  10 C ) decompress spring  201 A by allowing it and handgrip  109  to travel horizontally left until protuberance  601  makes contact with “T” lock aperture arm  125 A ( FIG.  10 D ); then rotate handgrip  109  down to lock in ( FIG.  10 E ) and use fitness device  101  with immovable handgrips for a more traditional pull-up exercise. When fitness device  101  is used for lateral sliding pull-ups ( FIGS.  8 D-F ) and user wants to lock handgrips  109 -A into “T” lock apertures  127 , they will use “T” lock aperture arm  125 B ( FIG.  10   -E). 
     Fitness device  101  has six “T” lock apertures  127 , three for each side of ventral bar  117 , they will be distinctly placed so the user will get the most benefit from location. For example, if handgrips  109 -A were locked in “T” lock apertures  127  on ventral bar  117  lateral ends the user would perform a wide grip pull-up; if handgrips  109 -A were locked in middle “T” lock apertures  127  the user can perform either medium grip pull-ups or chin-ups; and if handgrips  109 -A were locked in medial “T” lock apertures  127  the user can perform either close grip pull-ups or close grip chin-ups.  FIG.  10 A-E  shows medial sliding pull-up with just one handgrip  109 , left side of ventral bar  117 , and components of fitness device  101  inside cavity of ventral bar  117 , it is my intention to make clear that the use of fitness device  101  just outlined above and in  FIG.  10 A-E  applies to both sides of ventral bar  117 . In a different embodiment, there will be an indication when handgrips  109 -A are in position to lock into “T” lock apertures  127 , indication can be but not limited to: markers that lie between “T” lock apertures  127 , markers can equal or expand the width of handgrips  109 -A to indicate when to rotate. 
       FIG.  14 A-B  shows clockwise rotation of rubber pegs  103 -E. Depending on the exercise the user is performing determines the setting of rubber pegs  103 -E; for example, as stated earlier rubber pegs  103 -C will stand vertically to support hanging from door wall/frame ( FIG.  2 A-B ). When the user of fitness device  101  is performing lower back extension or sit-up assistance exercises ( FIG.  15 A-C ) rubber pegs  103 B-C will stand vertically against door wall  800  and rubber pegs  103 ,  103 A,  103 D, and  103 E will sit horizontally on floor so that fitness device  101  is elevated from ground ( FIG.  15 A-C ). 
     To perform lower back extension and sit-up assistance exercise. Handgrips  109 -A must be in lateral sliding pull-up position ( FIG.  8 D-F ), before placing fitness device  101  on the floor the user will adjust rubber pegs  103 -E to make sure they are at the right setting, as stated in previous paragraph. The user will then place fitness device  101  on the floor set against a vertical immovable structure, like a wall  800  ( 15 A-C). User will then connect lower back apparatus  817  by placing lower back connector  805 -A into indentations  111 -A, as shown in  FIG.  16    (lower back connector  805 -A may snap into indentations  111 -A; this statement is not meant to be limited in scope but to serve as an example of different embodiments of this invention that does not diverge from the spirit and scope of disclosed device). The user  809  will then sit on the floor, place their upper or mid-back on cushion  801 , feet should be placed on the floor with arms behind your head or crossed on your chest for a traditional setting, and legs bent ( FIG.  15 A-B ). The user  809  will then using only their upper back apply force to springs  201 A-B causing the user to descend and extend their lower back ( FIG.  15 C ), once fully extended the user  809  will ascend back to starting position with the assistance from springs  201 A-B decompressing, and in doing so they are performing an assisted sit-up. Lower back apparatus  817  may be made from plastic or metal. In a different embodiment lower back apparatus  817  will be height adjustable, this can be done but not limited to “X” bars  803  constructed to become hollow cylindrical bars within another bar, so that each bar will have two cylindrical bars within each other, and below pin  827  ( FIG.  21   ) will be pinholes going down vertically on each “X” bar  803 , a pin for each bar can be assigned, to adjust height push pin into pinhole. Pin as well as cylindrical hollow bars may also be but not limited to being spring-loaded. Also, there is a possibility when user is engaging lower back apparatus that handgrips  109 -A can rotate up into top “T” tracks ( FIGS.  11 A-B ) and bottom “T” tracks ( FIG.  12   ) to deal with this possible quandary in another embodiment device may come with one guardrail to prevent rotation. Guardrail may be but not limited to a mold of top “T” tracks affixed to an elongated piece of metal or plastic which spans the vertical section of tracks  133  and  135  where they converge ( FIG.  11 A-B ). A guardrail may not be included with device, but another means to prevent rotation may come affixed to fitness device  101  or lower back apparatus  817 . Also, lower back apparatus  817  may be constructed in a number of ways to those skilled in the art, but its function will serve the purpose as stated in mentioned specification and claims, this statement is not meant to limit the variable exercises one can perform with device. 
       FIG.  17 - 22    shows different perspectives of lower back apparatus  817  and its components.  FIG.  17    shows left hinge  807  fixed to lower back connector  805  circled to detail the components of upcoming view.  FIG.  18    shows hinge  807  fixed to one “X” bar  803 . Hinge  807 -A ( FIG.  21   ) allows a better range of motion when lower back apparatus  817  descends ( FIG.  15 C ) on a horizontal plane.  FIG.  19    shows a back view of lower back apparatus  817  with its sliding mechanism circled.  FIG.  20    shows sliding mechanism when user is either performing lower back extension or assisted sit-up exercises ( FIG.  15 A-C ); cylindrical bar  811  fixed to “X” bar  803  will slide down compartment  825 A during ascension ( FIG.  15 C ), on the right side of “X” bar  803  the same movement is occurring in compartment  825 B ( FIG.  19   ). In another embodiment rollers or ball bearings may take the place of cylindrical bar  811 . 
     Second Variation 
       FIG.  23    shows a front view of second variation of fitness device  101 . If you refer back to  FIG.  16    you will notice the only visual difference, besides the lower back apparatus  817 , are knobs  829 -A at each lateral end of ventral bar  117 . Knobs  829 -A will start out in a neutral position (no resistance added) ( FIG.  33 A-B ), if the user would like to increase resistance they will engage knobs  829 -A by rotating them clockwise ( FIG.  33 C-D ) decreasing the diameter of springs  201 A-B, in so doing increasing compression resistance from springs  201 A-B which the user will feel when engaging device. When the user rotates knobs  829 -A ( FIG.  33 C-D ) in order to engage resistance, circular gear protuberance  843  from circular gear  841  will occupy one track of tracks  853 -C ( FIG.  33 D ), the user can then either perform: a medial resistance pull-up ( FIG.  8 A-C ) a lateral resistance pull-up ( FIG.  8 D-F ) or a lower back extension/sit-up assistance resistance exercise ( FIG.  15 A-C ). In order to decrease resistance inclusive component  857  will have to return back to lateral ends of ventral bar  117 , once returned, key  833  will go into keyhole ( FIG.  32   ) user will then rotate knobs  829 -A accordingly. In order for springs  201 A-B to rotate, springs  201 A-B will fit tightly into inclusive components  857 . 
       FIG.  24    shows the inner tracks  853 -C for ventral bar  117 , tracks  853 -C will be placed parallel to one another and run from ventral bar  117  lateral end to its medial end, on both sides of ventral bar  117 . Tracks  853 -C can be metal, and may be welded onto ventral bar  117 , but not limited to that option. Tracks will not be limited to four. 
       FIG.  25    shows the posterior side of component  857 . As in the first variation, there will be a total of four inclusive components  857 , one at each lateral end of springs  201 A-B. Also as in the first variation, circular cap protuberance  847  will make contact with appendage  505  to compress springs  201 A-B (there is a difference in reference numbers between outer rim spring cap  205  ( FIG.  5 A ) and circular cap  839  ( FIG.  26   ), because circular cap  839  has a circular aperture in its middle) to engage fitness device  101  for exercise or to lock in “T” locks  127  ( FIG.  10 A-E ). 
       FIG.  26    shows inclusive component  857  broken up. Circular gear  841  and spring gear cap  845  may be connected by screws  849  and bolts  851 . Circular gear  841  rectangular feature will insert into spring gear cap  845  rectangular feature and act in dual motion, meaning, when circular cap  839  is rotated do to circular cap protuberance  847  it will act independently from circular gear  841  and spring gear cap  845 . Referring back to  FIG.  33 D  shows an example of the last statement: circular gear protuberance  843  from circular gear  841  was rotated and circular cap protuberance  847  from circular cap  839  did not rotate. Spring gear cap  845  key structure located in the middle of spring gear cap  845  ( FIG.  26   ) may be a keyhole indentation or a keyhole aperture identical to circular gear  841  keyhole aperture ( FIG.  26   ). In another embodiment circular cap  839  and spring gear cap  845  can link, linking means can be but not limited to spring gear cap  845  having a concave dome similar to concave spring cap  603  and inserted into circular cap  839 . Spring gear cap  845  would have circular gear protuberance  843  and serve the same utilitarian function as above disclosure mentioned, in this embodiment circular cap  839  would still act independently from spring gear cap  845  when spring gear cap  845  is rotated. Aforementioned statement is not meant to be limiting but to describe how disclosed fitness device can be configured in a number of ways by those skilled in the art without departing from the scope and nature of disclosed fitness device. 
     Knobs  829 -A will work independently of locking caps  113 A-B, referring to  FIG.  29 - 30    shows this process.  FIG.  29    shows direction of where knob  829  and its fixed cylindrical protuberance  831  will be inserted, which is a circular hollow aperture in the middle of locking cap  113 A. Once inserted circular ring  837  will either be tightened onto cylindrical protuberance  831  or welded ( FIG.  30   ), but are not limited to those options. Screw  835  may also secure key  833  to circular protuberance  831  ( FIG.  30   ), but is not limited to that option.  FIG.  28 A-B  shows different views of knob  829  combined with locking cap  113 A.  FIG.  31    shows cylindrical protuberance  831  direction of entry for key  833  into keyhole ( FIG.  32   ). 
     The utilitarian ability of inclusive component  857  is accomplished through its distinct key system, which can be designed in many ways to those skilled in the art, but for intent and purposes, its function is that of a key system, which is part of above disclosure. Also there are many ways one skilled in the art can configure aforementioned fitness device, for instance in the second variation: instead of circular gear  841  having a rectangular feature and spring gear cap  845  having indentations to link with rectangular feature, circular gear  841  can have notches going along its frame and spring gear cap  845  can have notches on its posterior side to link with circular gear notches, said notches will serve as a means to twist springs  201 A-B when rotated eliminating the need for tracks  853 -C, instead, there will be one set of tracks for circular gear protuberance  843  to prevent rotation from circular gear  841  when engaged. In other words, this would eliminate the need for multiple tracks to increase resistance inside ventral bar  117 , but it would still serve the same utilitarian function of multiple tracks. This statement is not meant to be limiting but to describe how above mentioned disclosure can be configured in a number of ways to those skilled in the art without departing from the spirit and scope of claimed fitness device.