Patent Description:
Passenger transport carriers carry a passenger, for example, a child, from one place to another. The transport carrier can have wheels with a braking system that can be operated by the user. The braking system can stop or slow the travelling motion of the carrier. <CIT> discloses a pushchair with a brake system in which pushing an operating member on the handlebar deactivates the brake system. <CIT> discloses a baby carriage having brakes which are automatically applied when the carriage is not in use. <CIT> discloses a braking device for a stroller that comprises a handle bar and a coaxial rotatable brake actuator for pulling a cable of a wheel brake. Increasing its rotation around the handle bar increases a braking force applied to the wheel brake.

According to the invention a stroller according to claim <NUM> is provided. Advantageous further formations are subject of the dependent claims. The stroller includes a handle bar and a rotatable brake actuator disposed about a lengthwise axis of the handle bar. A first cable is coupled to the rotatable brake actuator. The cable has a first end and a second end. In some embodiments, a first wheel brake can be coupled to the first end of the cable and a second wheel brake can be coupled to the second end of the cable. In some embodiments, a first end of the cable can be coupled to the first wheel brake and the second of the cable can be coupled to the rotatable brake actuator. In some embodiments, rotating the rotatable brake actuator about the lengthwise axis of the handle bar can activate the first wheel brake and the second wheel brake. In some embodiments, rotating the rotatable brake actuator about the lengthwise axis of the handle bar can simultaneously activate the first wheel brake and the second wheel brake.

In some embodiments, the rotatable brake actuator can be disposed at a midpoint of the handle bar. In some embodiments, the rotatable brake actuator can be configured to rotate in a direction toward a user positioned longitudinally rearward of the handle bar. In some embodiments, the rotatable brake actuator can be configured to rotate in a direction away from a user positioned longitudinally rearward of the handle bar. In some embodiments, the cable can be disposed through a housing of the rotatable brake actuator. In some embodiments, the cable can be coupled to an interior surface of the housing.

In some embodiments, the stroller can include a frame, the first wheel coupled to the frame having the first brake, a second wheel coupled to the frame having a second brake, and a handle bar coupled to the frame. The rotatable brake actuator is disposed about the handle bar. The brake actuator includes a base member having an elongate tubular body disposed coaxially about the handle bar. In some embodiments, the base member can include a first collar disposed at a first end of the body and having a first passage therethrough, and a second collar disposed at a second end of the body and having a second passage therethrough. A housing is disposed about the body of the base member and the brake actuator includes a cavity extending through the housing from a first end of the housing to a second end of the housing. In some embodiments, the stroller can include a cable extending from the first brake to the second brake and passing through the first passage of the first collar, the cavity of the housing, and the second passage of the second collar. In some embodiments, rotating the brake actuator can displace the cable, thereby actuating the first and second brakes.

In some embodiments, a ledge can be disposed within the cavity of the housing. In some embodiments, the cable can extend over an upper surface of the ledge. In some embodiments, the upper surface of the ledge can include a notch. In some embodiments, the cable can be disposed in the notch. In some embodiments, the cable can be disposed through a hole in the ledge.

In some embodiments, the first collar can include a first protrusion (e.g., a nipple) extending from the first collar. The first protrusion can define an outer opening of the first passage. In some embodiments, the second collar can include a second protrusion extending from the second collar. The second protrusion (e.g., a nipple) can define an outer opening of the second passage. In some embodiments, each of the first collar and second collar can have an inner opening facing the body of the base member.

In some embodiments, the housing can include at least one gripping area on an outer surface of the housing. In some embodiments, the gripping area can have at least one ridge extending from the outer surface. In some embodiments, the gripping area can have two, three, or more than three ridges.

In some embodiments, the housing can include a through-hole having an inner surface configured to be disposed about an outer surface of the body of the base member. In some embodiments, the inner surface of the through-hole can contact the outer surface of the body of the base member around an entirety of the body. In some embodiments, the housing can include a wall disposed between the through-hole and the cavity.

In some embodiments, a rotatable braking actuator for a stroller can include a base member having an elongate tubular body with a longitudinal axis of rotation, a first collar disposed at a first end of the body and having a first passage therethrough, and a second collar disposed at a second end of the body and having a second passage therethrough. A housing is disposed about the body of the base member and coupled to the base member. The housing includes a cavity extending through the housing from a first end of the housing to a second end of the housing. In some embodiments, a cable can extend through the first passage of the first collar, the cavity of the housing, and the second passage of the second collar.

In some embodiments, the housing and the base member can be configured to simultaneously rotate about the longitudinal axis of rotation. In some embodiments, the housing can rotate about the longitudinal axis of rotation and the base member can remain fixed in place. In some embodiments, the first and second passage can each have an interior opening facing the body of the base member. In some embodiments, a distance between the interior openings can be between <NUM> and <NUM>. In some embodiments, the distance between the interior openings can be between <NUM> and <NUM>. In some embodiments, the distance between the interior openings can be between <NUM> and <NUM>. In some embodiments, the distance between the interior openings can be between <NUM> and <NUM>. In some embodiments, the distance between the interior openings can be about <NUM>.

In some embodiments, a perpendicular distance from the longitudinal axis of rotation to the cable(s) within the cavity can be between <NUM> and <NUM>. In some embodiments, the perpendicular distance from the longitudinal axis of rotation to the cable within the cavity can be between <NUM> and <NUM>. In some embodiments, the perpendicular distance from the longitudinal axis of rotation to the cable can be between <NUM> and <NUM>. In some embodiments, the perpendicular distance from the longitudinal axis of rotation to the cable(s) can be between <NUM> and <NUM>. In some embodiments, the perpendicular distance from the longitudinal axis of rotation to the cable(s) can be about <NUM>.

In some embodiments, a ledge having a notch can be disposed within the cavity of the housing. In some embodiments, the cable can be disposed in the notch.

In some embodiments, a first axis can extending through the longitudinal axis of rotation and the first passage and a second axis extend through the longitudinal axis of rotation and the notch. In some embodiments, an angle between the first axis and the second axis can be between <NUM> and <NUM> degrees when the braking device is in a starting position (i.e., not rotated). In some embodiments, the angle between the first axis and the second axis can be between <NUM> and <NUM> degrees when the braking device is in the starting position. In some embodiments, the angle between the first axis and the second axis can be between <NUM> and <NUM> degrees when the braking device is in the starting position. In some embodiments, the angle between the first axis and the second axis can be between <NUM> and <NUM> degrees when the braking device is in the starting position. In some embodiments, the angle between the first axis and the second axis can be about <NUM> degrees when the braking device is in the starting position.

In some embodiments, the base member and/or the housing can be configured to rotate between <NUM> and <NUM> degrees from the starting position to an ending position. In some embodiments, the base member and/or the housing can be configured to rotate between <NUM> and <NUM> degrees from the starting position to an ending position. In some embodiments, the base member and/or the housing can be configured to rotate between <NUM> and <NUM> degrees from the starting position to the ending position. In some embodiments, the base member and/or the housing can be configured to rotate between <NUM> and <NUM> degrees from the starting position to the ending position. In some embodiments, the base member and/or the housing can be configured to rotate between <NUM> and <NUM> degrees from the starting position to the ending position. In some embodiments, the base member and/or the housing can be configured to rotate about <NUM> degrees from the starting position to the ending position.

In some embodiments, a method of activating a braking system of a stroller can include rotating a braking actuator about a handle bar of the stroller. In some embodiments, the braking actuator can include a base member having an elongate tubular body disposed around the handle bar, a first collar disposed at a first end of the body and having a first passage therethrough, and a second collar disposed at a second end of the body and having a second passage therethrough. The braking actuator includes a housing disposed about and coupled to the base member. The housing has a cavity extending through the housing from a first end of the housing to a second end of the housing. In some embodiments, rotating the braking actuator can displace a cable disposed through the first passage, the cavity, and the second passage from a first position to a second position, thereby imparting force along the cable to activate a first and second brake of respective first and second wheels disposed on opposite sides of the stroller. In some embodiments, rotating the braking actuator can displace a cable disposed through the first passage and coupled to the housing, thereby imparting force along the cable to activate a first brake of a first wheel of the stroller. In some embodiments, rotating the braking actuator can displace a first and second cable coupled to the housing and to respective first and second brakes, thereby imparting force along the cables to activate the first and second brake of respective first and second wheels.

The stroller includes the handle bar and the rotatable brake actuator disposed along a lengthwise axis of the handle bar. The first cable is coupled to the rotatable brake actuator. The first cable has the first end and the second end. The first wheel brake of the first wheel is coupled to the first end of the first cable. Rotating the rotatable brake actuator around the lengthwise axis of the handle bar activates the first wheel brake.

In some embodiments, rotating the rotatable brake actuator can wrap the first cable in both circumferential and lengthwise directions. In some embodiments, the first cable can wrap around an outer surface of a base member disposed inside a housing of the rotatable brake actuator. In some embodiments, rotating the rotatable brake actuator can impart a force perpendicular to a lengthwise direction of the first cable.

In some embodiments, the second end of the first cable can be coupled to an interior of a housing of the rotatable brake actuator. In some embodiments, the second end of the first cable can be fixedly attached to the interior of the housing of the rotatable brake actuator.

In some embodiments, the stroller can include a second cable having a first end and a second end. A second wheel brake of a second wheel can be coupled to the first end of the second cable. Rotating the rotatable brake actuator around the lengthwise axis of the handle bar can activate the second wheel brake. In some embodiments, rotating the rotatable brake actuator around the lengthwise axis of the handle bar can simultaneously activate the first wheel brake and the second wheel brake. In some embodiments, increasing the rotation of the rotatable brake actuator around the handle bar can increase a braking force applied to the first and second wheel brake.

The rotatable brake actuator includes a base member having a main body disposed around the handle bar. In some embodiments, a first collar can be disposed at a first end of the main body having a first passage through the first collar. A housing is disposed around the main body of the base member defining an interior cavity. In some embodiments, the first cable can be disposed through the first passage of the first collar and coupled to the housing within the interior cavity. In some embodiments, the first cable can enter the first passage at an angle between <NUM> and <NUM> degrees relative to an exterior surface of the first collar. In some embodiments, the first cable can enter the first passage at an angle of about <NUM> degrees relative to the exterior surface of the first collar. In some embodiments, the first cable can enter the first passage at an angle of about <NUM> degrees relative to the exterior surface of the first collar.

In some embodiments, the brake actuator can include a housing having a first portion and a second portion configured to couple to the first portion around the handle bar. In some embodiments, the first portion and the second portion of the housing can be coupled by screws or snap-fit. In some embodiments, the first cable having the first end is coupled to the first wheel brake and the second end can be coupled to the housing. In some embodiments, the second end of the first cable can be fixedly attached to an interior surface of the first portion of the housing.

In some embodiments, the stroller can include a second cable having a first end coupled to a second wheel brake and a second end coupled to the housing of the brake actuator. Rotating the brake actuator around the handle bar activates the second wheel brake.

The brake actuator includes a base member having a main body disposed around the handle bar. In some embodiments, the main body of the base member can be cylindrical. A housing is disposed around the main body of the base member, defining an interior cavity. In some embodiments, the base member of the brake actuator can include a first collar disposed at a first end of the main body. In some embodiments, the first collar can have a first nipple extending from the first collar and defining a first passage through the first collar. In some embodiments, the first cable can be disposed through the first passage. In some embodiments, a second collar can be disposed at a second end of the main body. In some embodiments, the second collar can have a second nipple extending from the second collar and defining a second passage through the second collar. In some embodiments, a second cable can be disposed through the second passage.

In some embodiments, an interior surface of the housing can include a plurality of curved ribs extending from the interior surface. In some embodiments, the ribs can be configured to contact an outer surface of the main body of the base member. In some embodiments, the housing can be configured to rotate around the base member. In some embodiments, the base member can include a stop member extending from an outer surface of the main body. In some embodiments, the stop member can be configured to engage at least one of the plurality of ribs, thereby limiting rotation of the brake actuator around the handle bar.

In some embodiments, the handle bar has a central axis and the rotatable brake actuator is disposed around the handle bar. In some embodiments, a first radius from the central axis to a first point on an outer surface of the rotatable brake actuator can be smaller than a second radius from the central axis to a second point on the outer surface of the rotatable brake actuator. In some embodiments, the first radius and the second radius can be collinear. Rotating the rotatable brake actuator around the handle bar activates the first wheel brake.

In some embodiments, the rotatable brake actuator can include a base member having a cylindrical main body disposed symmetrically around the central axis of the handle bar and a housing disposed around the main body. In some embodiments, a first collar can be disposed at a first end of the main body and having a first passage therethrough, and a second collar can be disposed at a second end of the main body and having a second passage therethrough. In some embodiments, the first collar and the second collar can have an oblong shape such that a first portion of the first and second collars has a smaller radius of curvature than a second portion of the first and second collars.

In some embodiments, the rotatable brake actuator can include at least one gripping area. In some embodiments, the gripping area can include at least one ridge extending from an outer surface of the rotatable brake actuator. In some embodiments, the first point of the rotatable brake actuator can be configured to be gripped by a palm of a user and the second point of the rotatable brake actuator can be configured to be gripped by one or more fingers of the user.

In some embodiments, the stroller can include a second cable having a first end coupled to a second wheel brake and a second end coupled to the rotatable brake actuator. In some embodiments, the second ends of the first and second cables can be fixedly attached to an interior of a housing of the rotatable brake actuator.

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the embodiments of the invention and, together with the description, further serve to explain the principles and to enable a person skilled in the relevant art(s) to make and use the embodiments.

The features and advantages of the embodiments will become more apparent from the detailed description set forth below when taken in conjunction with the drawings, in which like reference characters identify corresponding elements throughout.

Embodiments of the present invention are described in detail with reference to embodiments thereof as illustrated in the accompanying drawings.

The following examples are illustrative, but not limiting, of the present embodiments.

Braking systems are an important safety feature of transport carriers, for example, child transport carriers such as strollers. Without a braking system, it can be difficult to stop or slow the motion of the transport carrier, for example, on a decline or when travelling at a fast pace and needing to stop or slow quickly. Therefore, it is also important to have a braking actuator ergonomically disposed so that it can be easily activated by the user, for example, while walking or jogging.

It may also be advantageous to have a single braking actuator that is capable of activating two braking systems at the same time, for example, a braking system for each of two wheels disposed on opposite sides of the transport carrier. This can allow the user to use one hand to activate braking systems on both sides of the transport carrier, thereby evenly and quickly slowing or stopping the transport carrier. The rotational motion needed to actuate the brake as described herein is natural for the user and can be done without taking the fingers or hand off of the handlebar (e.g., as required when squeezing a lever), improving control and security. Moreover, embodiments of the braking systems described herein are "dynamic" in that they are not simply an "on/off" system. As the user rotates the braking actuator farther around the handle bar, more force is applied to the brakes.

The braking actuators described herein have mechanical advantages over conventional brake actuators, such as brake levers. A typical brake lever requires a pull force of about <NUM> N by the user to achieve a total of about <NUM> N (<NUM> N per brake) of cable tension to create enough friction by the brake to stop the carrier. In some cases, this pull force is <NUM>% of the maximum grip force for a user. Therefore, it is difficult for the user to sustain this force over longer or multiple braking situations.

Embodiments of the rotational brake actuators described herein require only about <NUM> of torque to achieve the same <NUM> N of cable tension at each brake. This is facilitated, for example, by pulling the center of a single continuous cable. The required torque is about <NUM>% of the maximum torque that can be applied by most users. Therefore, it is relatively easy to sustain this torque for longer or multiple braking situations than with a lever brake.

Furthermore, a typical pull lever must be pulled approximately <NUM> by the user in order to have the output cable travel about <NUM>. This distance can be difficult to manage for users with smaller hands or for a user's weaker hand. This can result in a dangerous situation where the user cannot fully lock up the wheels with the brakes. In comparison, embodiments of the rotational brake actuators described herein can be rotated about <NUM> degrees (about <NUM> on the circumference of the handle bar) in order to achieve the same output cable travel of about <NUM>. This motion is much easier for a user and can be done with either hand.

Embodiments of the brake actuators and braking systems disclosed herein are able to create larger braking (tension) forces with smaller input (rotational) forces, for example, by wrapping the cable(s) both around and along the circumference of the handle bar. Other cable braking systems rely solely on linear travel of the cable to actuate the braking system at the wheel. Embodiments herein are able to use leverage to apply a larger force and increase cable travel distance, while making it easier for the user to apply the brake force. Generally, as the radius about which the cable(s) wraps increases, a larger braking force is applied, making it easier to apply the brake force. However, a handle bar with too large of a radius may be difficult to grip for some users.

In embodiments where two separate cables are used, one for each of two braking systems, terminating an end of the cables at a fixed point on the brake actuator (e.g., within a housing of the brake actuator) can facilitate the wrapping effect around the handle bar. Using two cables can also simplify installation, particularly in after-market applications where the user is installing the braking system. One end of each cable can be attached at a respective brake, and the other end can be coupled to the brake actuator. This alleviates the need for routing the cable through the actuator or within the handle bar.

Another advantage of embodiments of the brake actuators described herein is the two-piece construction of both the housing and base member. This allows the brake actuator to be provided as an after-market component from the child carrier and attached to the handle bar by the consumer, adding to convenience and interchangeability from one product to another. The two-piece construction allows for easy assembly and routing of the cables from the brake systems and attachment to the brake actuator.

The shape of embodiments of the brake actuators also provides an ergonomic benefit. The non-circular shape of some embodiments provides a better grip to user and also provides space for the cables within the housing of the brake actuator. In some embodiments, a wider section away from the user allows the cable to remain internal within the brake actuator and protects the user's hands from an external cable, while a narrower section closer to the user comfortably fits within the palm of the user's hand.

Still further, when folding a transport carrier or rotating the handle bar to a non-use position, a traditional lever can press into the cover of the passenger compartment, risking damage to the cover. The rotational brake actuators described herein do not have this drawback, as they are disposed closely about the handle bar.

<FIG> illustrates carrier <NUM>, according to an embodiment. Carrier <NUM> is a stroller for a child. Carrier <NUM> can have one or more wheels <NUM>, and preferably two or more wheels. In some embodiments carrier <NUM> can have one, two, three, four, or more than four wheels. As shown in <FIG>, in some embodiments, carrier <NUM> can have two rear wheels 104a and two front wheels 104b. In some embodiments, the rear wheels 104a can be larger in diameter than the front wheels 104b. In some embodiments, a rear wheel 104a can be disposed on each of a left and right side of carrier <NUM>. In some embodiments (not shown), carrier <NUM> can have one front wheel 104b disposed in the center of the front portion of carrier <NUM>, for example, for use while jogging.

Carrier <NUM> can include frame <NUM>. Frame <NUM> can be made from any suitable material, for example, metal, plastic, or composite. Frame <NUM> can define compartment <NUM>, within which a child can sit while carrier <NUM> is in use. In some embodiments, a cover <NUM> can be disposed on all or a portion of frame <NUM> to enclose compartment <NUM> completely or partially.

One or more of the wheels <NUM> include a brake or braking system <NUM>. For example, in some embodiments, each of a left and right rear wheel <NUM> can have its own brake or braking system <NUM>. A brake actuator <NUM> is disposed on or about handle bar <NUM> of carrier <NUM> for activating the braking system <NUM> at one or both of the wheels <NUM> (e.g., rear wheels 104a). One or more cable <NUM> is coupled with brake actuator <NUM> and one or both of the braking systems <NUM> of rear wheels 104a or front wheels 104b. In some embodiments, two cables <NUM> can be coupled with brake actuator <NUM>, for example, one cable <NUM> for a wheel <NUM> on each side of carrier <NUM>. The term "cable" as used herein is not meant to be limiting and is intended to include one or more string, wire, plurality of braided or woven wires (e.g. metal or nylon wires), cord, band, rope, or any other elongated member sufficient to connect, for example, the braking system <NUM> of first and second wheels <NUM> on opposite sides of carrier <NUM> through brake actuator <NUM> or to separately connect each braking system <NUM> with brake actuator <NUM>.

The brake actuator <NUM> is activated by rotating brake actuator <NUM> about handle bar <NUM> of carrier <NUM>. Rotation of brake actuator <NUM> can displace cable(s) <NUM> to activate the brakes or braking systems <NUM> at wheels <NUM>. For example, rotating brake actuator <NUM> toward the user can pull cable <NUM>, placing an upward force at the first and second ends of cable <NUM> attached with the braking systems <NUM> at the wheels <NUM>. In some embodiments, activation of brake actuator <NUM> can activate both braking systems <NUM> simultaneously. Braking systems <NUM> can be band brakes, disc brakes, rim brakes, drum brakes, or any other braking system known in the art to apply, for example, a frictional braking force to wheels <NUM>. In some embodiments, the brake actuator <NUM> rotation can trigger an electric motor or hydraulic brake cylinders that increase braking power and reduce the input force at the brake actuator. In an example not covered by the invention, a wireless option can be used, where rotating the brake actuator <NUM> activates braking systems <NUM> at the wheels <NUM> by sending a wireless signal to the braking systems <NUM>.

Different types of braking systems can require different amounts of force in order to operate the brakes. In the devices described herein, the braking actuators can be designed to enhance force output for certain types of braking systems, for example, by changing the angle of entry, amount of handle rotation, and/or distance of cable travel. By way of example, embodiments of band brakes and disc brakes are described.

In some embodiments, band brakes can be used in braking system <NUM>. Generally, the force required to apply band brakes is greater than the force required to apply disc brakes to achieve the required braking power. Therefore, the entry angle θ<NUM> (see <FIG>) of the cable(s) <NUM> with respect to a side surface <NUM>, <NUM> of the brake actuator <NUM> is typically larger for band brakes. For example, in some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be about <NUM> degrees. Other ranges within those disclosed are also contemplated and the endpoints are not meant to be limiting.

Because disc brakes typically require less force to operate, in some embodiments, where disc brakes are used in braking system <NUM>, the angle of entry θ<NUM> can be shallower in comparison to band brakes. This can reduce friction applied onto the cable(s), for example, from an interior surface of the nipples of the brake actuator. For example, in some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be between <NUM> and <NUM> degrees. In some embodiments, the angle of entry may be about <NUM> degrees. Other ranges within those disclosed are also contemplated and the endpoints are not meant to be limiting.

Brake actuator rotation and cable travel can also be adjusted according to brake type and force requirements. These are related in that increasing the rotation of the brake actuator also increases the cable travel because the cable(s) wrap farther around the handle bar. Also, if the inner diameter of the handle bar is increased, generally the cable travel distance should be increased to apply the required amount of force to operate the brakes. Further, the cable travel can be increased by moving the cable termination ends outward axially from the center of the handle. That is, the closer the termination point is to the end of the housing, the more the cable can wrap around the handle bar, thereby increasing the cable travel.

In either band brake or disc brake systems, in some embodiments, the brake actuator rotation may be between <NUM> and <NUM> degrees around the handle bar. In some embodiments, the brake actuator rotation may be between <NUM> and <NUM> degrees. In some embodiments, the brake actuator rotation may be between <NUM> and <NUM> degrees. In some embodiments, the brake actuator rotation may be between <NUM> and <NUM> degrees. In some embodiments, the brake actuator rotation for band brake systems may be about <NUM> degrees. In some embodiments, the brake actuator rotation for disc brake systems may be about <NUM> degrees.

Likewise, in either band brake or disc brake systems, in some embodiments, the cable travel may be between <NUM> and <NUM>. In some embodiments, the cable travel may be between <NUM> and <NUM>. In some embodiments, the cable travel for band brake systems may be between <NUM> and <NUM>. In some embodiments, the cable travel for band brake systems may be about <NUM>. In some embodiments, the cable travel for disc brake systems may be between <NUM> and <NUM>. In some embodiments, the cable travel for disc brake systems may be about <NUM>. Other ranges for brake actuator rotation and cable travel within those disclosed are also contemplated and the endpoints are not meant to be limiting.

<FIG> illustrates brake actuator <NUM> and handle bar <NUM>, according to an embodiment. As shown in <FIG>, brake actuator <NUM> is disposed about handle bar <NUM>. Rotating brake actuator <NUM> about handle bar <NUM> activates the braking systems <NUM> at wheels <NUM>. In some embodiments, rotating brake actuator <NUM> in the direction shown by the arrow R in <FIG> can activate the braking systems <NUM>. As referred to herein, the direction of the arrow R in <FIG> represents rotating brake actuator <NUM> toward the user of carrier <NUM> (i.e., rearward) where the user is pushing carrier <NUM>, for example, when being used as a stroller. As referred to herein, the view shown in <FIG> represents a front perspective view of brake actuator <NUM>. Views from the direction that the user faces while pushing carrier <NUM> are referred to as rear or rear perspective views. Therefore, for example, a rear perspective view is from the perspective of a user while pushing carrier <NUM> in a conventional forward direction of travel while holding onto handle bar <NUM>.

Referring to <FIG>, embodiments of brake actuator <NUM> and components thereof are described in detail. Brake actuator <NUM> includes a base member <NUM> and housing <NUM>. Cable <NUM> is coupled with brake actuator <NUM>. For example, in some embodiments, a single cable <NUM> can be disposed through housing <NUM>. In this manner, in some embodiments, a first end of cable <NUM> can be coupled with a first braking system <NUM> of a wheel <NUM>, for example, a rear wheel on the right side of carrier <NUM> as viewed from the user's perspective. In some embodiments, cable <NUM> can run through brake actuator <NUM>, for example, through housing <NUM>, and also connect to a second braking system <NUM> at a second wheel <NUM>, for example, a rear wheel on the left side of carrier <NUM> as viewed from the user's perspective. In some embodiments, two cables <NUM> can be coupled with brake actuator <NUM>, for example, to an interior of housing <NUM>. The first cable <NUM> can connect to a first braking system <NUM> and the second cable can connect to a second braking system <NUM>. In some embodiments, in order to activate one or both of the braking systems <NUM>, the user can rotate brake actuator <NUM> toward the user (i.e., in the rearward direction), as shown for example in <FIG>. In some embodiments, the user can rotate the brake actuator <NUM> forward in order to activate the braking system(s) <NUM>.

<FIG> and <FIG> illustrate a rear perspective view and a front perspective view, respectively, of a brake actuator <NUM> and handle bar <NUM>, according to an embodiment. Handle bar <NUM> can include a bar <NUM> about which brake actuator <NUM> can be disposed. Bar <NUM> can be made of any suitable material, for example, metal, plastic, or composite. In some embodiments, bar <NUM> can be cylindrical. In some embodiments, bar <NUM> can have a hollow interior. Bar <NUM> has a central axis disposed in a lengthwise direction. The central axis can be an axis of rotation for brake actuator <NUM>.

In some embodiments, one or more pad <NUM> can be disposed about bar <NUM>. Pads <NUM> can be disposed about all or a portion of bar <NUM>. In some embodiments, pads <NUM> can be foam or another material to provide a softer gripping surface for the user to hold while pushing carrier <NUM>.

In some embodiments, brake actuator <NUM> can include base member <NUM>, as shown for example in <FIG> and <FIG>. Base member <NUM> can be made of any suitable material, for example, metal, plastic, or composite. Base member <NUM> is disposed about bar <NUM>. For example, in some embodiments, base member <NUM> can include a through-hole <NUM> through which bar <NUM> can extend. In some embodiments, through-hole <NUM> can include inner surface <NUM>, which can be disposed against an outer surface <NUM> of bar <NUM>. In some embodiments, through-hole <NUM> can have a size and shape that conforms to an outer surface of bar <NUM> such that through-hole <NUM> is coaxial with bar <NUM>. As discussed, for example, with respect to <FIG>, in some embodiments, base member <NUM> can have a first portion <NUM> coupled to a second portion <NUM> around bar <NUM>.

In some embodiments, base member <NUM> can include main body <NUM> having an outer surface <NUM>. In some embodiments, main body <NUM> can be cylindrical and through-hole <NUM> can extend therethrough, forming a tubular elongate member. In some embodiments, base member <NUM> can have a first collar <NUM> disposed at a first end <NUM> of main body <NUM>. In some embodiments, base member <NUM> can have a second collar <NUM> disposed at a second end <NUM> of main body <NUM>. First collar <NUM> and second collar <NUM> can have a shape and size that is larger than through-hole <NUM> of main body <NUM>. In some embodiments, the collars <NUM>, <NUM> can be any suitable shape, for example, circular, oval, oblong, elliptical, or any other shape. In some embodiments, first and second collars <NUM>, <NUM> may not be symmetrically disposed about through-hole <NUM>. For example, in some embodiments, first and second collars <NUM>, <NUM> may extend further in the forward direction away from the central axis of bar <NUM>.

In some embodiments, first collar <NUM> and second collar <NUM> can have a passage <NUM> extending therethrough. In some embodiments, passage <NUM> can have an outer opening <NUM> disposed on an exterior side of the collar and an inner opening <NUM> on an interior side of the collar. In some embodiments, outer opening <NUM> can be larger than inner opening <NUM>. In some embodiments, outer opening <NUM> and/or inner opening <NUM> can be circular. In some embodiments, passage <NUM> can include a protrusion (e.g., a nipple) <NUM> extending from the surface of collars <NUM>, <NUM>. For example, protrusion <NUM> can extend from an exterior surface of collars <NUM>, <NUM> and define outer opening <NUM> of passage <NUM>.

In some embodiments, cable <NUM> can extend through passage <NUM> of both first collar <NUM> and second collar <NUM>. For example, in some embodiments, cable <NUM> can extend through outer opening <NUM> of passage <NUM> on first collar <NUM>, through first collar <NUM>, and out of inner opening <NUM> of first collar <NUM>. In some embodiments, cable <NUM> can extend across a length of the main body <NUM> of base member <NUM>, with or without contacting main body <NUM>, into the inner opening <NUM> of second collar <NUM>, and exit the outer opening <NUM> of passage <NUM> of second collar <NUM>.

In some embodiments, base member <NUM> can include one or more screw holes <NUM> located in the surface of base member <NUM>, for example, in first collar <NUM>, second collar <NUM>, and/or main body <NUM>. Screw holes <NUM> can be configured to receive a screw or another fastener so that base member <NUM> can be coupled with housing <NUM>.

Referring to <FIG>, brake actuator <NUM> includes housing <NUM>. Housing <NUM> can be made from any suitable material, for example, plastic, metal, or composite. Housing <NUM> is disposed about base member <NUM>. In some embodiments, housing <NUM> can be coupled with base member <NUM>, for example, by screws or other fasteners which can extend through screw holes <NUM>, for example, as shown in <FIG>. Base member <NUM> and housing <NUM> can be coupled by other mechanisms, for example, friction fit, snap fit, etc. Housing <NUM> rotates around base member <NUM>.

Housing <NUM> can include outer surface <NUM>. In some embodiments, outer surface <NUM> can include one or more gripping portions <NUM>. In some embodiments, outer surface <NUM> can include two gripping portions <NUM>. In some embodiments, gripping portion <NUM> can include one or more ridge <NUM> protruding from outer surface <NUM> of housing <NUM>. In some embodiments, gripping portion <NUM> can include two, three, four or more ridges <NUM>. The gripping portion <NUM> can facilitate gripping of housing <NUM> by the user, for example, in order to rotate brake actuator <NUM>. In some embodiments, housing <NUM> can include a first portion <NUM> and a second portion <NUM>. In some embodiments, each of first portion <NUM> and second portion <NUM> of housing <NUM> can include a gripping portion <NUM>. In some embodiments, first portion <NUM> can face away from the user (i.e., the front portion), as shown in <FIG>. In some embodiments, second portion <NUM> can face the user (i.e., the rear portion), as shown in <FIG>. In some embodiments, housing <NUM> can include one or more screw hole <NUM> through which a screw or other fastener can couple first portion <NUM> and second portion <NUM>. First portion <NUM> and second portion <NUM> of housing <NUM> can be coupled by other mechanisms, for example, friction fit, snap fit, etc. In some embodiments, housing <NUM> can be a single integral member.

Housing <NUM> can include a through-hole <NUM>, which can have an inner surface <NUM>. In some embodiments, inner surface <NUM> of through hole <NUM> can be formed from both the first portion <NUM> and the second portion <NUM> of housing <NUM>, as shown for example in <FIG>. In some embodiments, inner surface <NUM> of through-hole <NUM> can have a size and shape configured to be disposed about outer surface <NUM> of the main body <NUM> of base member <NUM>. In some embodiments, through-hole <NUM> can be coaxial with through-hole <NUM> of base member <NUM> and/or bar <NUM> of handle bar <NUM>. In some embodiments, through-hole <NUM> can be cylindrical.

In some embodiments, as shown for example in <FIG> and <FIG>, housing <NUM> can include one or more cavity <NUM> extending through housing <NUM>. In some embodiments, cavity <NUM> can extend entirely through housing <NUM> from a first end <NUM> to a second end <NUM>. In some embodiments, a wall <NUM> can at least partially separate cavity <NUM> and through-hole <NUM> within housing <NUM>. This can separate cavity <NUM> from the main body <NUM> of base member <NUM> extending through the through-hole <NUM> of housing <NUM>. In some embodiments, a ledge <NUM> can be disposed within cavity <NUM>. In some embodiments, ledge <NUM> can be a piece of material extending from wall <NUM> to first portion <NUM> of housing <NUM>. In some embodiments, cable <NUM> can extend through cavity <NUM> and across ledge <NUM>, for example, across an upper surface of ledge <NUM>. Thus, when brake actuator <NUM> is rotated, for example toward the user, the ledge <NUM> can help displace the cable <NUM> to activate the braking system <NUM> at wheels <NUM>. In some embodiments, ledge <NUM> can include one or more notch <NUM>. In some embodiments, cable <NUM> can be disposed within notch <NUM>, for example, as shown in <FIG>. This can facilitate retention of cable <NUM> across or within ledge <NUM>. In some embodiments, ledge <NUM> can have a hole (not shown) therethrough, through which the cable <NUM> can extend.

<FIG> illustrates a partial interior view of brake actuator <NUM> as viewed from second end <NUM> of base member <NUM> and second end <NUM> of housing <NUM> (i.e., the right side of carrier <NUM> as viewed from the user's perspective while pushing carrier <NUM>). Center point C can be the lengthwise center axis of bar <NUM>, which can also be the axis of rotation for brake actuator <NUM>. As shown in the embodiment of <FIG>, in some embodiments, cable <NUM> can enter passage <NUM> of base member <NUM>, extend into cavity <NUM> of housing <NUM>, and across ledge <NUM> of housing <NUM>, for example within notch <NUM>. As shown, for example, in <FIG>, in some embodiments, an upper surface of ledge <NUM> can be disposed above passage <NUM> thereby creating a "pre-load" angle θ<NUM> for cable <NUM> when it is disposed through housing <NUM> in a starting or "at rest" position for brake actuator <NUM>, where brake actuator <NUM> is not rotated.

The pre-load angle θ<NUM> can be defined as an angle between an axis A through a center of passage <NUM> and axis B1 through a center of cable <NUM> where it passes across ledge <NUM>, as shown for example in <FIG>. In some embodiments, θ<NUM> can be greater than <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be about <NUM> degrees. This can provide brake actuator <NUM> with some pre-loaded force to facilitate activation of the brakes <NUM>.

When brake actuator <NUM> is rotated, for example in the direction of the arrow R in <FIG> (i.e., toward the user), cable <NUM> disposed across ledge <NUM> can be displaced and angle θ<NUM> in the direction of the arrow R shown in <FIG>. For example, cable <NUM> can end up being disposed with axis B2 extending through the center of cable <NUM> along ledge <NUM>. In some embodiments, the displacement from axis B1 to axis B2 (i.e., θ<NUM>) can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be between <NUM> and <NUM> degrees. In some embodiments, θ<NUM> can be about <NUM> degrees. When brake actuator <NUM> is rotated fully to B2, braking systems <NUM> at wheels <NUM> can achieve full lock out such that motion of carrier <NUM> in the forward and rearward directions of travel is prevented.

As also shown in <FIG>, cable <NUM> can be located a distance d<NUM> from a center point C of a central axis of bar <NUM>. In some embodiments, d<NUM> can be between <NUM> and <NUM>. In some embodiments, d<NUM> can be between <NUM> and <NUM>. In some embodiments, d<NUM> can be between <NUM> and <NUM>. In some embodiments, d<NUM> can be about <NUM>. This can provide the proper angle to apply force along cable <NUM> to the brakes <NUM>.

<FIG> illustrates a partial front view of brake actuator <NUM>, according to an embodiment. <FIG> shows a pathway of cable <NUM> through brake actuator <NUM>, according to an embodiment. Cable <NUM> can enter outer opening <NUM> of passage <NUM>, for example, via protrusion <NUM>, pass through second collar <NUM>, and exit inner opening <NUM>. Cable <NUM> can then enter cavity <NUM> of housing <NUM> and pass across ledge <NUM>. Cable <NUM> can then enter inner opening <NUM> of passage <NUM> in first collar <NUM> and exit outer opening <NUM> via protrusion <NUM> of first collar <NUM>.

In some embodiments, cable <NUM> can include a crimped portion <NUM>. In some embodiments, crimped portion <NUM> can be a piece of material crimped onto cable <NUM> to provide a larger area. In some embodiments, crimped portion <NUM> can be disposed in notch <NUM> of ledge <NUM> to help stabilize cable <NUM> within housing <NUM>. As shown for example in <FIG>, in some embodiments, crimped portion <NUM> can be disposed within a hole or window <NUM> of housing <NUM> to reduce lateral movement of cable <NUM> within housing <NUM>. As shown in <FIG>, in some embodiments, screw <NUM> or other fastening device can be used to couple first portion <NUM> of housing <NUM> with second portion <NUM> of housing <NUM>.

<FIG> illustrates a partial exploded view of brake actuator <NUM>, according to an embodiment. As shown in <FIG>, in some embodiments, cable <NUM> can extend through passage <NUM> of first collar <NUM> into cavity <NUM> of housing <NUM> and then through passage <NUM> of second collar <NUM>. In some embodiments, first portion <NUM> of housing <NUM> can have a wall <NUM> configured with a contour to fit about main body <NUM> of base member <NUM>. In some embodiments, first portion <NUM> can have cavity <NUM> through which cable <NUM> extends. In some embodiments, a crimped portion <NUM> can be added to cable <NUM> through a window <NUM> of cavity <NUM> so that lateral movement of cable <NUM> is reduced within housing <NUM>. In some embodiments, crimped portion <NUM> can be used instead of, or in addition to, ledge <NUM> of housing <NUM>.

<FIG> illustrates brake actuator <NUM> being assembled to handle bar <NUM>, according to an embodiment. In some embodiments, first portion <NUM> of housing <NUM> can be coupled with base member <NUM> and second portion <NUM> of housing <NUM> can be coupled with first portion <NUM> of housing <NUM> and base member <NUM>. Inner surface <NUM> of first portion <NUM> and second portion <NUM> of housing <NUM> can be configured to fit tightly about outer surface <NUM> of main body <NUM> of base member <NUM>. In some embodiments, housing <NUM> can have a friction fit about base member <NUM>. In some embodiments, brake actuator <NUM> can be disposed in the center of handle bar <NUM>. In some embodiments, brake actuator <NUM> can be disposed closer to one end or another of handle bar <NUM>.

<FIG> illustrate brake actuator <NUM>, according to an embodiment. In some embodiments, cable <NUM> can be disposed exterior to housing <NUM>. For example, as shown in <FIG>, in some embodiments, cable <NUM> can extend through passage <NUM> of first collar <NUM> of base member <NUM>, for example through an outer opening <NUM> and an inner opening <NUM> of protrusion <NUM>. In some embodiments, cable <NUM> can extend under a paddle <NUM> of housing <NUM> and then through passage <NUM> of second collar <NUM>, for example, through an inner opening <NUM> and then through an outer opening <NUM> of protrusion <NUM>. In some embodiments, cable <NUM> can engage one or more flange <NUM> extending from paddle <NUM>. As shown, for example in <FIG>, when brake actuator <NUM> is rotated by the user, for example, toward the user, cable <NUM> can be displaced by paddle <NUM>, thereby activating the braking systems <NUM> at wheels <NUM>.

<FIG> illustrates a partial exploded view of brake actuator <NUM>, according to an embodiment. <FIG> illustrates the embodiment of <FIG> attached to handle bar <NUM>. Many of the components are similar to those shown and described in the embodiments of <FIG> and <FIG>, for example, and are indicated by like reference numbers. For example, brake actuator <NUM> can include base member <NUM> having a main body <NUM> and first and second collars <NUM>, <NUM> with passages <NUM> for cables <NUM>. Likewise, housing <NUM> can have a first portion <NUM>, a second portion <NUM>, and an outer surface <NUM> with one or more gripping portions <NUM> with ridges <NUM>.

As shown in <FIG>, in some embodiments, first and second cables <NUM> can be coupled to brake actuator <NUM>. In some embodiments, first ends of the cables <NUM> can be connected to respective braking systems <NUM>, as shown for example in <FIG>. As shown in <FIG>, in some embodiments, second ends of the cables <NUM> can be coupled to housing <NUM>, for example, first portion <NUM> of housing <NUM> or second portion <NUM> of housing <NUM>. In some embodiments, the second ends of the cables <NUM> can be coupled to housing <NUM> by cable couplings <NUM>. In some embodiments, cable couplings <NUM> can be plastic or metal components used to fixedly couple the second ends of the cables <NUM> to housing <NUM>, for example, with a screw <NUM>. Other mechanisms for coupling the ends of cables <NUM> to housing <NUM> can be used, for example, adhesives, friction-fit, etc. As shown, for example, in <FIG>, in some embodiments, cables <NUM> can have a bearing <NUM> disposed at or near the end of the cable <NUM>, which can be retained by cable coupling <NUM> to couple the cable <NUM> with housing <NUM>. Bearing <NUM> can be, for example, a spherical or cylindrical component at the end of cable <NUM>.

In some embodiments, a first cable <NUM> can extend through passage <NUM> of first collar <NUM>, for example through nipple <NUM>, and into an interior cavity <NUM> defined by housing <NUM>. Likewise, a second cable <NUM> can extend through passage <NUM> of second collar <NUM> and into interior cavity <NUM> of housing <NUM>. In some embodiments, first portion <NUM> of housing <NUM> can have an interior surface with one or more ribs <NUM> extending therefrom. In some embodiments, ribs <NUM> can be curved to contact and correspond with the outer surface <NUM> of main body <NUM> of base member <NUM>.

As shown in <FIG>, in some embodiments, base member <NUM> can have a first portion <NUM> and a second portion <NUM>, which can be coupled together, for example, by screws <NUM>, snap-fit, friction fit, adhesive, or other attachment means. In some embodiments, base member <NUM> can include one or more bearing surface <NUM> to facilitate rotation of housing <NUM> around base member <NUM>. Bearing surface <NUM> can be, for example, a raised ring around main body <NUM> of base member <NUM>. In some embodiments, main body <NUM> can include a bearing surface <NUM> at first end <NUM> and/or at second end <NUM>.

<FIG> illustrates a first portion <NUM> of housing <NUM>, according to an embodiment. In comparison to <FIG>, the attachment locations for cable couplings <NUM> to couple cables <NUM> with housing <NUM> are disposed at first end <NUM> and second end <NUM> of the housing <NUM>. In some embodiments, the attachment locations for cable couplings <NUM> shown in <FIG> can be used with a band brake system and the attachment locations for cable couplings <NUM> shown in <FIG> can be used with a disc brake system. Attaching cable couplings <NUM> closer to the center of the housing <NUM>, as shown in <FIG>, can increase the force applied upon rotating the brake actuator <NUM>. As discussed above, band brakes generally require more force to operate than disc brakes. So in some embodiments, attachment locations for cable couplings <NUM> closer to ends <NUM>, <NUM> of housing <NUM>, as shown in <FIG>, can be used with a disc brake system because it requires less force to operate the brakes.

<FIG> illustrates brake actuator <NUM> disposed on a handle bar <NUM>, according to an embodiment. Many of the components are similar to those shown and described with respect to <FIG> and <FIG>, for example, and are indicated by like reference numbers. For example, base member <NUM> can include a through-hole <NUM> for handle bar <NUM>, a main body <NUM> having an outer surface <NUM>, a first collar <NUM> disposed at a first end <NUM> of main body <NUM>, and a second collar <NUM> disposed at a second end <NUM> of main body <NUM>. In some embodiments, first collar <NUM> and second collar <NUM> can have a passage <NUM> extending therethrough, with an outer opening <NUM> disposed on an exterior side of the collar and an inner opening <NUM> on an interior side of the collar.

In some embodiments, passage <NUM> can include a protrusion (e.g., a nipple) <NUM> extending from the surface of collars <NUM>, <NUM>. In some embodiments, a first cable <NUM> can extend through passage <NUM> of first collar <NUM> and a second cable <NUM> can extend through passage <NUM> of second collar <NUM>, with both cables <NUM> fixedly attaching to an interior of housing <NUM>. The position and orientation of nipples <NUM> can dictate the entry angle θ<NUM> of cable(s) <NUM>, as discussed herein with reference to <FIG>.

<FIG> illustrates stopper <NUM> on base member <NUM>, according to an embodiment. Stopper <NUM> can limit the rotation of brake actuator <NUM> by acting as an interference surface. In some embodiments, stopper <NUM> can include a top surface <NUM> and a front surface <NUM>, each extending from the outer surface <NUM> of main body <NUM> of base member <NUM>. In some embodiments, the top surface <NUM> and front surface <NUM> can meet, forming a wedge shape. In some embodiments, the stopper <NUM> can engage one or more of the ribs <NUM> on the housing <NUM> to limit the rotational movement of the housing <NUM> around the base member <NUM>.

<FIG> illustrates an interior view of base member <NUM>, according to an embodiment. As described above, in some embodiments, base member <NUM> can have a first portion <NUM> and a second portion <NUM> that are coupled together to form base member <NUM>. <FIG> illustrates bearing pins <NUM>, which in some embodiments can be disposed in passage <NUM>. Bearing pins <NUM> can be, for example, metal or plastic pins that can rotate to reduce friction on cable(s) <NUM> as the cable moves upon rotating the brake actuator <NUM>. For example, when rotating brake actuator <NUM> to actuate the braking systems <NUM>, cable(s) <NUM> travel a distance to wrap around and along base member <NUM>. The bearing pins <NUM> reduce the friction imparted onto the cable(s) <NUM>, for example, by the interior surface of the nipples <NUM>.

<FIG> illustrates a side view of a brake actuator <NUM>, according to an embodiment. The side view shows side surface <NUM> of second collar <NUM> of base member <NUM>, with through-hole <NUM> extending through base member <NUM>. Through-hole <NUM> can have a central axis C. <FIG> illustrates a non-circular shape of brake actuator <NUM> about central axis C, according to some embodiments of brake actuator <NUM>. In some embodiments, this non-circular shape can result from the collars <NUM>, <NUM> having an oblong shape such that a first portion (for example near P1) has a smaller radius of curvature than a second portion (for example near P2). The non-circular shape creates an ergonomically designed brake actuator that provides a better grip to user and also provides space for the cables within the housing <NUM> of the brake actuator <NUM>. The wider section allows the cable to remain internal and protects the user's hands from an external cable.

In some embodiments, a first radius R1 from the central axis C to a first point P1 on an outer surface of the rotatable brake actuator <NUM> (e.g., on outer surface <NUM> of housing <NUM>) is smaller than a second radius R2 from the central axis C to a second point P2 on the outer surface of the rotatable brake actuator <NUM>. In some embodiments, the first radius R1 and the second radius R2 can be collinear. In some embodiments, P1 can define the rearmost point of brake actuator <NUM> and P2 can define the forward-most point of brake actuator <NUM>. In some embodiments, the first point P1 is configured to be gripped by a palm of a user and the second point P2 is configured to be gripped by one or more fingers of the user. This design provides the user with a comfortable handle at the palm location, while also providing a finger grip area for the tips of the fingers. As described above, including ridges <NUM> on gripping portions <NUM>, for example, made of a rubber material, also adds to the ergonomics and feel of the brake actuator <NUM>.

<FIG> illustrates a schematic of brake actuator <NUM>, according to an embodiment, which depicts the entry angle θ<NUM> of the cables <NUM> relative to the brake actuator <NUM>. As shown in <FIG>, the cables <NUM> can extend into the brake actuator <NUM>, for example through passages <NUM> and/or nipples <NUM>. <FIG> illustrates entry angle θ<NUM> formed between a plane at side surface <NUM> of first collar <NUM> and a plane through a lengthwise direction of cable <NUM>. For example, as discussed above, the entry angle θ<NUM> may be between <NUM> and <NUM> degrees depending on the type of braking system and required force output to operate the braking system.

<FIG> illustrates a force schematic of a conventional cabled brake system and <FIG> illustrates a force schematic of a brake system as described herein, according to an embodiment. As shown in <FIG>, conventional cabled brake systems impart a linear tension force T in the x-direction of the cable(s), which pulls the cable at brakes <NUM> in the same direction as the linear tension force T. The cable is pulled in only one direction and so there is only one force component, which is along the axis of the cable. This differs from <FIG>, where the tension force T is applied in a y-direction perpendicular to the direction of the cable(s), imparting a tension force TL to a left brake <NUM> and a tension force TR to a right brake. The angled deflection of the cables increases the tension in the cable, thus requiring less force to be exerted by the user to achieve the same travel distance of the cables and the same braking force at the wheel(s) as the conventional system.

Methods of activating a braking system of a transport carrier are also disclosed. For example, a method of activating a braking system of a child transport carrier includes rotating the braking actuator about the handle bar of the carrier. In some embodiments, rotating the braking actuator can displace a cable that is disposed through braking actuator, for example, through the first passage of the first collar, the cavity. This rotation can cause the cable to move from a first position to a second position, thereby imparting force along the cable to activate a first and second brake of respective first and second wheels disposed on opposite sides of the carrier. In some embodiments, the method can include rotating the braking actuator toward the user. In some embodiments, the method can include rotating the braking actuator with one hand by the user. In some embodiments the method can include rotating the braking actuator more than <NUM> degrees. In some embodiments the method can include rotating the braking actuator more than <NUM> degrees. In some embodiments the method can include rotating the braking actuator more than <NUM> degrees. In some embodiments the method can include rotating the braking actuator about <NUM> degrees.

A method of activating a braking system of a child transport carrier includes rotating the braking actuator about the handle bar of the carrier. In some embodiments, a housing of the braking actuator can rotate about a base member of the braking actuator. In some embodiments, rotating the braking actuator can displace one or more cables coupled to the braking actuator. In some embodiments, two cables can be coupled the braking actuator, for example, within a housing of the braking actuator. This rotation can cause the cables to travel around and along the handle bar, thereby imparting force along the cables, which in some embodiments activate a first and second brake of respective first and second wheels disposed on opposite sides of the carrier. In some embodiments, the method can include rotating the braking actuator toward the user. In some embodiments, the method can include rotating the braking actuator with one hand by the user. In some embodiments the method can include rotating the braking actuator more than <NUM> degrees. In some embodiments the method can include rotating the braking actuator more than <NUM> degrees. In some embodiments the method can include imparting a cable travel distance of more than <NUM>.

It is to be appreciated that the Detailed Description section, and not the Brief Summary and Abstract sections, is intended to be used to interpret the claims. The Summary and Abstract sections may set forth one or more but not all exemplary embodiments of passenger transport carriers and brake actuators as contemplated by the inventors, and thus, are not intended to limit the present embodiments and the appended claims in any way.

Claim 1:
A stroller (<NUM>) for a child, comprising:
a handle bar (<NUM>);
a rotatable brake actuator (<NUM>) disposed around a lengthwise axis of the handle bar (<NUM>);
a first cable (<NUM>) coupled to the rotatable brake actuator (<NUM>), the first cable (<NUM>) having a first end and a second end; and
a first wheel brake (<NUM>) of a first wheel (104a) coupled to the first end of the first cable (<NUM>),
wherein the rotatable brake actuator (<NUM>) comprises a base member (<NUM>) having an elongate tubular main body (<NUM>) disposed coaxially about the handle bar (<NUM>), a housing (<NUM>) disposed about the body (<NUM>) of the base member (<NUM>) and configured to displace the first cable (<NUM>), and an interior cavity (<NUM>) extending through the housing from a first end of the housing to a second end of the housing (<NUM>),
wherein rotating the rotatable brake actuator (<NUM>) around the lengthwise axis of the handle bar (<NUM>) activates the first wheel brake (<NUM>), wherein increasing the rotation of the rotatable brake actuator (<NUM>) around the handle bar (<NUM>) increases a braking force applied to the first wheel brake (<NUM>).