Abstract: Apparatus and method for simultaneously applying braking forces to two spaced apart rotating in-line roller skate wheel assemblies.

Abstract: A brake is constructed so that a brake pad contacts the road surface by moving down an inclined plane. The geometry of the design results in a braking force that is large in comparison to the force applied by the user of the brake, allowing for very quick stops. The brake has particular utility for streetluges and go-carts, but could also be used on roller skates, inline skates, and skateboards.

Abstract: Braking device, particularly for skates that comprise a shoe composed of a quarter articulated to a shell associated with a frame whereto two or more wheels are pivoted. A rod member is connected to the quarter and is slidingly associated at a seat that acts as a guide and is formed on a support associated with the frame.

Abstract: Roller or in-line roller skate including a boot associated with an upper plate of a frame on which the skating wheels are arranged, and having a braking device constituted of a friction element connected to activating mechanism interposed between a journalled rear portion of the boot and the friction element, so as to bring the latter into a frictional contact with the ground, in view of a braking during a rearward rocking of said journalled portion of the boot, caused by the skater, wherein the friction element is connected to the activating mechanisms via amplification mechanisms that are capable of increasing its travel with resect to that of the activating mechanism.

Abstract: Each wheel of an inline roller skate incorporates multiple tires, with a center tire allowing straight-ahead skating and the two side tires allowing maneuvering forces. Leaning the skate such that none of the tires makes good contact with the skating surface causes the skater to skid sideways. By increasing the roll angle, the skater engages more sideways friction of the side tires, and comes to a controlled stop. By modulating the roll angle, a skilled skater can control the rate of deceleration. An added nose wheel allows the skater to tilt toward the toe, like an ice skater, to reduce straight line contact with the skating surface, and enable curvilinear skating.

Abstract: A braking apparatus is provided for a skate which comprises a shoe composed of at least one quarter connected to a shell associated with a supporting frame for a plurality of wheels. The braking apparatus includes a braking element connected to a rear portion of the supporting frame adjacent the wheels. A brake arm is connected between the quarter of the skate and the braking element. The brake arm includes a first member and a second member connected together with the first member moveable with respect to the second member. The brake arm includes a switch mechanism operable between a first and second position. Upon activation of the switch mechanism from the first position to the second position, the first member of the brake arm moves away from the second member of the brake arm such that the length of the brake arm is increased and the braking element is positioned lower with respect to the wheels of the skate.

Abstract: A braking system for an in-line skate. The skate includes a boot mounted on a chassis. A cuff is rotatably mounted on the chassis. The chassis also has a plurality of wheels rotatably mounted thereon. The braking system for the skate includes a brake pad housing which is either fixedly or pivotally attached to a rear portion of the cuff, a brake pad disposed in the housing, and a roller arm rotatably mounted on the chassis. The roller arm is spring loaded so that when the brake is not in use, the roller arm is disposed above the wheels. The roller arm has a bearing assembly disposed therein, so that when the brake is actuated by a rearward rotation of the cuff, the brake pad engages the bearing assembly of the roller arm, thereby causing said bearing assembly to engage at least one of the wheels to slow and/or stop the skate. A rear wheel of the skate may be biased to enhance the braking action and reduce wheel wear.

Abstract: A skate brake system includes a carriage that pivots about the rear of a skate so as to bring a brake pad into contact with the skating surface when activated by a hand-activated actuator. The skater need not perform any special body movement to raise (or lower) the toe of the skate, and, accordingly, the angle of the skate relative to the ground remains constant while the brake is applied. In another embodiment, a plunger canister contains a plunger that brings a brake pad into contact with the skating surface when the plunger is actuated by a hand-activated actuator.

Abstract: A preferred patient examination table (10) includes a selectively engageable, pivot mechanism (14) allowing the table (10) to be pivoted about an upright pivot axis (98) in order to position the table (10) as needed for ready access to examination equipment (88) by performing a procedure with either a left or right hand.

Abstract: An in-line skate is disclosed having a frame with a plurality of wheels and a boot coupled to the frame. The boot has a cuff and lower shell connected by a resilient connecting member that permits flexing along substantially the entire length of the member. The connecting member can be made of spring steel or a variety of synthetic materials.

Abstract: Roller skate braking actuated by the skater, by hand or foot, and aided mechanically, hydraulically, and/or electrically, whether in actuation, linkage, or braking retardation of at least a rearmost skate-supporting wheel. A braking roller having a concave portion fitting closely against the convex wheel surface is retarded to slow or stop the wheel and the skate, however the skater so actuates it.

Abstract: Braking device for skates including an item of footgear composed of a quarter articulated to a shell which is in turn associated with a supporting frame for one or more wheels. The device includes a rod member connected to the quarter and is slidingly associated with the shell. The rod member has an end which, upon a rotation of the quarter, pushes toward the ground, a braking element articulated to the frame.

Abstract: A walker is intended for use by a baby who is learning to walk. The walker has a base which is provided in the underside thereof with a plurality of skidproof structures. The bottom of each skidproof structure has a reference plane slightly higher than a wheel set which is fastened with the base and is composed of a universal wheel and a wheel seat assembly. The wheel seat assembly includes a one-way roller and a threaded rod for confining and locating the one-way roller such that the moving range of the walker can be controlled to ensure the baby against accidents.

Abstract: A roller skate including a quarter pivoted to a shell connected to a frame supporting wheels; a brake pad is supported by a support; a cable guides a flexible actuator adapted to actuate the support upon a rearward rotation of the quarter with respect to the shell.

Abstract: An inline roller skate includes a large number of small, light weight wheels arranged along a downwardly convex arcuate line to form a rocker. Braking elements are disposed along a common axis with at least some of the wheels, the braking elements may take the form of various surfaces of revolution, such as conical, cylindrical, ellipsoidal or semispherical. The braking elements are arranged to contact the skating surface when the skater shifts his foot to a direction perpendicular to his direction of movement and leans back on his skate so as to perform an "ice skating" type braking action.

Abstract: Braking device, particularly for skates including a shoe composed of a quarter articulated to a shell which is in turn associated with a frame, wheels being pivoted thereto. The device is constituted by an elastic support having two essentially L-shaped arms that can be pivoted to the shell or to the frame. The elastic support is slidingly associated with the quarter at one end and a brake is associated with the arms.

Abstract: A security apparatus for a shopping cart having a plurality of casters has a braking member rotatably mounted on a wheel axle of one of the wheels. The braking member is movable between a raised position spaced above the ground surface and an operative position contacting the ground surface, and has a portion projecting radially outwardly from the outer peripheral rim of the wheel at least in the operative position so as to lift the wheel from the ground and impede rotation of the wheel. A locking device releasably locks the braking member in the raised position, and is released by a trigger device in response to a signal from a signal system extending around an area in which carts are to be retained, at which point the braking member rotates into the operative position.

Abstract: A skate (10) includes a boot (12) and wheels (28), secured to a frame (14), and a brake (16). The boot includes a base (18), a heel counter (20) and a pivotable cuff (22). The brake includes a brake housing (32) connected to the frame by lower arms (34) and to the base of the boot by upper arms (36). A brake pad (38) is secured to the lower end of the brake housing adjacent the wheels. A push rod (40) extends upwardly from a top end of the brake housing along the axis of the brake housing, and bears against a cuff tab (42) secured to the back of the cuff of the boot. Forward pivoting of the cuff of the boot during skating does not activate the brake, while rearward movement of the cuff causes the cuff tab to push down on the push rod (40), resulting in engagement of the brake pad with the ground. Displacement of the brake pad in response to movement of the cuff is amplified by a hydraulic master-slave piston arrangement contained within the brake housing.

Abstract: A new hand-activated brake device and method particularly for in-line roller skates is shown having numerous forms and mounting locations. All forms use direct hand pressure to activate the brake. Optimum slowing, stopping and balance is achieved to include when used in hilly areas. For skaters of all levels: beginner to advanced. Left and right skates can be operated simultaneously or singly. A brake assembly is retrofitted or manufactured to the skate and a rod is pushed by hand. An optional padded elastic strap assembly is provided for holding a rod in an easy to reach position along the outer lower leg area and skate. A brake pad contacts the skating surface and automatically retracts to maintain a desired ground clearance when hand pressure is released. The user need not maintain a constant grip on anything. Has unique safety and convenience features and options.

Abstract: An inline hockey roller skate and wheel which includes braking and tread elements. The two elements have surfaces formed of a tough resilient material, such as urethane, disposed over a strong cage like frame. The frame and the tough resilient material provide a tread element which is a relatively hard surface so as to provide a fast wheel. The tread element is formed with an air chamber in the tough resilient material so as to be more easily deformable during the braking action. The braking element is arranged to contact the skating surface when the skater shifts his foot to a direction perpendicular to his direction of movement and leans back on his skate so as to perform an "ice skating" type braking action. The braking element is thus deformed and flattened against the skating surface to provide a larger foot print to improve gripping the surface for better cornering and ice hockey type stops.

Abstract: The invention describes a front wheel suspension for motorcycles, in the case of which a telescopic fork is swivellably held on the vehicle body by way of a longitudinal control arm. In order to prevent an outward rotation of the telescopic fork during the compression of the front wheel, the invention provides a ball joint on the steering head which ball joint is held so that it can be rotated about a transverse axis. The rotating movement of the ball joint is initiated by way of a steering strut by the swivel movement of the longitudinal control arm. As a result of the rotatability of the ball joint, the damaging outward rotating of the telescopic fork is counteracted. In the ideal case, a parallel displacement of the telescopic fork is achieved during the compression of the front wheel.

Abstract: A skate (10) includes a boot (12) and wheels (28), secured to a frame (14), and a brake (16). The boot includes a base (18), a heel counter (20) and a pivotable cuff (22). The brake includes a brake housing (32) connected to the frame by lower arms (34) and to the base of the boot by upper arms (36). A brake pad (38) is secured to the lower end of the brake housing adjacent the wheels. A push rod (40) extends upwardly from a top end of the brake housing along the axis of the brake housing, and bears against a cuff tab (42) secured to the back of the cuff of the boot. Forward pivoting of the cuff of the boot during skating does not activate the brake, while rearward movement of the cuff causes the cuff tab to push down on the push rod (40), resulting in engagement of the brake pad with the ground. Displacement of the brake pad in response to movement of the cuff is amplified by a hydraulic master-slave piston arrangement contained within the brake housing.

Abstract: A controller for wheeled vehicles includes a mechanism which selectively shifts the vehicle between a mobile and a stable state. The vehicle may be a walker for easing an operator's efforts in walking and includes a selectively actuable stabilizer which fixes the position of the walker or releases it for rolling motion, thus providing a stable state or a mobile state, respectively. An actuator such as a button, pressure sensor, or lever, electrically and/or mechanically actuates a stabilizer brake mechanism to engage or release the brake and thereby allow the walker's mobility to be controlled when the actuator operates the brake to stabilize or to slow the motion of the walker. Preferably, lift applied to the vehicle itself releases the brake and allows mobility. The actuator may control an electrically actuated braking mechanism, in response to a sensor such as a strain gauge that may be adjusted to the needs of the patient; alternatively, lifters may be provided to act in response to the lifting force.

Abstract: A braking system is provided for an in-line roller skate for skating on hard skate-supporting surfaces. The roller skate includes a shoe, a wheel-supporting frame attached to the shoe, and a plurality of aligned wheels operably supported by the wheel-supporting frame. The braking system includes a hub supported on the frame and a ground engaging braking wheel rotatably supported on the hub. The hub and the ground engaging braking wheel include friction-generating surfaces such that the ground engaging braking wheel causes a braking action with the hub as the braking wheel rollingly engages with the ground supporting surface. A variety of configurations of the hub are disclosed including cuff-actuated systems and frame-fixed systems, and including a plurality of hub configurations including one-piece, multi-piece and wrapped, multi-piece and levered, and spring-biased split hub versions.

Abstract: Skate of the type including a shell with which at least one quarter is articulated and below which a frame is associated; the frame carries a plurality of aligned wheels. A support for a first brake is oscillatably articulated to the frame; the brake is connected to the quarter by means of a rod member. A second brake is also connected to the support and interacts with at least one of the wheels beyond a selected degree of rotation applied to the quarter.

Abstract: An auxiliary braking system including a brake. A hydraulic arm is secured to a frame of the automobile. The hydraulic arm has a free end secured to the brake. The hydraulic arm has an up line and a down line extending outwardly therefrom. A pump is secured within the frame of the automobile. The pump is coupled with free ends of the up line and the down line of the hydraulic arm. The pump has wiring extending outwardly therefrom to couple with existing brake lines of the automobile.

Abstract: A braking system for an in-line roller skate includes a brake actuator arm pivotally mounted on a support shaft extending through the rearmost wheel of the skate. Brake pads are connected to a first segment of the brake actuator arm and extend behind the rear wheel. The brake actuator arm is continuously biased to maintain the brake pads, which are tire segments, out of engagement with the skate support surface. An upwardly directed force applied to the brake actuator arm by the skater pivots the arm relative to the in-line roller skate and brings the brake pads into contact with the skate support surface.

Abstract: Disclosed is a height-adjustable brake mechanism for roller skates, mainly including a fixing member, a movable member fitly and adjustably covered over the fixing member, a fixing bolt member for adjustably attaching the movable member to the fixing member, and a brake block attached to the movable member at a proper position and height for safely braking the roller skates when necessary. The fixing and the movable members have upward arched curved bodies and are provided with toothed top surfaces and toothed lower edges, respectively, which mesh with each other to allow the two members to engage with each other in a firm and finely adjustable manner. Teeth on the toothed portions of the two members are designed to have a certain declination that permits the movable member to be pushed backward relative to the fixing member only.

Abstract: A braking device, particularly for skates, including a shoe composed of a quarter that is articulated to a shell which is in turn associated with a frame to which two or more wheels are pivoted. The braking device is constituted by a substantially U-shaped elastic support that has V-shaped lateral wings; a brake pad is associated with the ends of the wings. The support also has a base that is pivoted transversely to the quarter.

Abstract: A baby-walker including a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around the border, a plurality of wheel assemblies and an extension stand respectively coupled to the downward coupling holes of the base frame by a respective anchoring socket and a respective bolt, and a linkage coupled between the top table and the base frame, the extension stand being moved between the operative position in which the baby-walker is supported on the ground by the extension stand and allowed to be turned about the extension stand, and the wheel assemblies are suspending above the lowest end of said extension stand, and the non-operative position in which the baby-walker is supported on the ground by the wheel assemblies and the extension stand is suspending from the base frame above the elevation of the wheel assemblies.

Abstract: A conventionally constructed baby walker 5 having a lower support member 6 to which are attached front wheels 10 and 11 (not shown) and rear wheels and 12 and 13 (not shown) in contact with floor surface 14 has further magnetically activated brake assembly 21 moveably attached to support member 6, the bottom surface of which is also in contact with floor surface 14. Brake assembly 21 further contains a permanent magnet disposed above surface 14 and attached to an internal latching mechanism. A magnetically permeable arc shaped strip 15 is further attached to floor surface 14 using conventional screws 19. Preferably strip 15 is placed in front of staircase 20 or other level drop such as may be encountered with a patio or porch. As walker 5 is propelled across surface 14 and over strip 15, the permanent magnet is downwardly attracted to the permeable strip releasing the latching mechanism and engaging brake assembly 21.

Abstract: A conventionally constructed baby walker 5 having a lower support member 6 to which are attached front wheels 10 and rear wheels 12 in contact with floor surface 14 has further optically activated brake assemblies 21a and 21b both moveably attached to support member 6, the bottom surface of each is rollably in contact with floor surface 14. Brake assemblies 21a and 21b each contain an infrared emitter and photodiode disposed above surface 14 and connected to a control circuit. An optically encoded arc shaped strip 15 having a pattern of alternating reflective and non reflective bands is further attached to floor surface 14 using conventional screws 19. Preferably strip 15 is placed in front of a descending staircase 20 or other level drop such as may be encountered with a patio or porch. As walker 5 is propelled across surface 14 and over strip 15, the optically encoded pattern is detected by the infrared emitter--photodiode combination of braking assembly 21a.

Abstract: A double line roller skate (10) comprising a plurality of dual rollers (12). A structure (14) is for retaining the dual rollers (12) rotatively in longitudinal alignment, one behind the other. A facility (16) is for holding the retaining structure (14) onto a foot of a skater (18).

Abstract: A ground engaging movable skate brake brings a brake surface into contact with the ground by moving the brake surface independently of the skate. The skate brake system of this invention includes: a delivery mechanism for driving a brake surface to the ground; a variable force mechanism for providing an increased mechanical advantage to the delivery mechanism or otherwise enhancing the performance of the system; an arresting mechanism to provide an emergency back-up in the event that the delivery mechanism should fail; a brake surface driven to the ground by the delivery mechanism; and an actuator mechanism for activating the delivery mechanism. Using the ground engaging movable skate brake, a skater need not perform any special body movement to bring the brake surface to the ground. The angle of the skate relative to the ground remains constant while the brake is applied.

Abstract: A break for an in-line roller skate is disclosed, which is activated by rotating the skater's lower leg rearwardly to drive a friction pad downwardly to engage the skating surface. A locking device permits the friction pad to be locked in a braking position while the skater resumes the normal skating posture for manueuvring. The brake is released by lifting the skater's heel to permit the friction pad to return to a stowed position.

Abstract: An adjustable brake structure for an in-line roller skate boot and wheeled chassis assembly is disclosed. The brake structure is formed by a sheathing attached to the boot assembly, a link block carrying a brake pad and pivotally secured to the boot assembly, and a lever operatively connecting the sheathing and link block. The lever is pivotally secured to the link block and adjustably secured to the sheathing by a flattened bolt engageable with a selected hole in the lever. The lever includes a series of holes connected by narrower neck openings to provide for adjustable engagement with the bolt.

Abstract: A braking system for an in-line roller skate includes a lever, a brake pad and a semi-rigid shaft mounted thereon. The lever is rotatably mounted on the rear wheel axle of the skate. The brake is activated by drawing the semi-rigid shaft upward, and de-activated by driving the semi-rigid shaft downward. The semi-rigid shaft can be adjusted in height to accommodate the user prior to adding a removably attached handle. As the semi-rigid shaft is drawn upward, the brake pad engages the skating surface retarding the motion of the skater. As the semi-rigid shaft is driven downward a rotation constraint provided keeps the lever from rotating into the skating surface. This rotation constraint also allows the brake to be applied using the common in-line braking method of raising the toe and pressing down on the heel. Frictional forces on the lever are sufficient to keep the brake in its disengaged position. The braking system can easily be added to most in-line skates without permanently altering the skate.

Abstract: Braking device, particularly usable for skates which include a shoe composed of a quarter which is articulated to a shell which is in turn associated with a supporting frame for two or more wheels. The device includes at least one elastic strut that allows an axially adjustable link between the quarter and a braking element which is oscillatably articulated to the frame and interacts with the ground in its active position. The device furthermore advantageously includes an element that is suitable to limit forward leg flexing.

Abstract: A braking system is provided for an in-line roller skate for skating on hard skate-supporting surfaces. The roller skate includes a shoe, a wheel-supporting frame attached to the shoe, and a plurality of aligned wheels operably supposed by the wheel-supporting frame. The braking system includes a hub supported on the frame and a ground engaging braking wheel rotatably supported on the hub. The hub and the ground engaging braking wheel include friction-generating surfaces such that the ground engaging braking wheel causes a braking action with the hub as the braking wheel rollingly engages with the ground supporting surface. A variety of configurations of the hub are disclosed including cuff-actuated systems and frame-fixed systems, and including a plurality of hub configurations including one-piece, multi-piece and wrapped, multi-piece and levered, and spring-biased split hub versions.

Abstract: The scooter of this invention is provided with a relatively large radius front wheel and a relatively small radius rear wheel attached to a compact frame assembly. Advantageously, the front wheel is a conventional bicycle-type wheel assembly comprised of a spoked wheel and a pneumatic tire, and has a radius which is at least four, and more preferably eight, times greater than the radius of the rear wheel. The frame assembly includes a planar footboard as a rear component and a front component which is connected to a forward end of the footboard and is curved upwardly therefrom so as to subtend a circumferential segment of the large-radius front wheel. A steerable yoke assembly is journalled to the forward end of the curved frame component to allow the large-radius front wheel to be steered by the operator (e.g., via a conventional handle bar assembly). The scooter may include a skid stop and/or a conventional hand-actuated caliper-type brake assembly.

Abstract: A carriage for babies to learn to walk includes an upper plate, a bedrock and supporting poles. It can slide on the ground freely. Brake and slide-resisting equipment have been installed in both sides of the bedrock. The brake and slide-resisting equipment comprises a shaft, a cylinder, and a slide-resisting plate. The shaft enables the slide-resisting plate to move freely in the cylinder. Moreover, the shaft can reach the ground and become fixed. The use of a brake and slide-resisting equipment on one side makes the carriage revolve around the slide-resisting plate shaft.

Abstract: This invention is a brake for a baby's walker. The brake's friction with the floor is increased by a slide-resisting piece attached to the braking support. It prevents the walker from sliding when the brake is against the ground. The supporting pole of the brake is extended in and out by a spring and slide mechanism. The spring and slide mechanism is located within a revolving casing. A horizontal piece on the slide is adapted to smoothly traverse the inner periphery of the casing along a helical guide. The guide forces the slide, and the brake attached to it, to move up and down as a revolving switch is turned. The guide also has a locking portion to hold the slide, and the brake, in extended position.

Abstract: Braking device, particularly for skates including a shoe associated with a frame having wheels. The device includes a rod member associated with the shoe and with a support for a brake that interacts with the ground. The rod member is hinged to the shoe and to the support through frustum-shaped seats for compensating for the axial offset of the frame with respect to the shoe or the quarter.

Abstract: A skate brake system includes a rocker arm that pivots about the rear of a skate so as to bring a brake pad into contact with the skating surface when the rocker arm is activated. The rocker arm is mechanically activated so that the skater need not perform any special body movement so as to raise (or lower) the toe of the skate. Accordingly, the angle of the skate relative to the ground remains constant while the brake is applied.

Abstract: A cart having a lower frame and wheel means for moving the cart on a surface, includes a surface engaging means extending below the lower frame. When the cart engages an escalator step, the surface engaging means grips the escalator step thereby hindering movement of the cart relative to the escalator step. Normally when the cart moves on a flat surface, the surface engaging means is above the lower plane defined by the lower level of the wheel means. The surface engaging includes a saw tooth base for engaging the step. In some embodiments there is a lid for closing the shopping cart and selectively locking the basket of the shopping cart. Means is provided for selectively locking one or more wheels of the shopping cart at the same time as the lid is locked.

Abstract: A brake mechanism for an in-line roller skate, the skate having a base plate the upper portion of which mounts a boot and a lower portion of which mounts a plurality of wheel assemblies, the brake mechanism including a support member depending downwardly from one side of the base plate, and a brake element having a lower end to which is attached a brake pad having a generally flat brake surface, the brake element mounted to the support member for adjustable movement relative to the support member along an arcuate path, and the brake pad surface maintained in alignment with a plane extending from a longitudinal axis through the lower ends of the plural wheels. A clamping mechanism can releasably hold the brake element stationary relative to the support member, and when the skate is tilted about the longitudinal axis through the wheel lower ends, the brake pad surface will be brought to lie flat against the ground.

Abstract: A load-bearing platform with fixedly attached wheels. A surrounding basket member is suspended from the platform, so that the basket member can be raised to a position exposing the wheels, at which point latches lock the outer portion of the basket in an upward position for ready rolling. The unloaded platform can be braked against movement by lowering the outer basket against the ground by pushing down on the walls of the basket, unlatching the wheels and pushing the platform up with respect to the basket. This particular construction has the wheels directly attached to the load-bearing platform; the basket is locked or moved by pushing or lifting on the side portions of the basket between an upper and a lowered position.

Abstract: A stabilizing or digger accessory for in-line skates is provided which is adapted to assist roller hockey goaltenders by permitting them to stabilize themselves in a stationary position in goal so that they may react laterally to incoming shots on goal. The digger accessory is easily installed and removed, replacing the frontmost wheel of the skate, so that it may be utilized while the skater is tending goal but removed when he or she wishes to skate normally. Furthermore, even when installed, because of its configuration and orientation with respect to the remaining wheels, the goaltender may skate normally with only a slight change of skating style, so that he or she may easily perform those goaltending duties which require mobility. Essentially, the digger accessory comprises a molded rubber insert wherein the bottom surface consists of a tread. When the heel of the skate is lifted, the tread contacts the skating surface to prevent rolling of the skate.

Abstract: A braking device, particularly usable for skates including a shoe composed of a quarter articulated to a shell in turn associated with a supporting frame for one or more wheels. The device comprises at least one rod-like element which is rotatably associated with the quarter and is slidingly associated with a guide formed on a wing which is associated with the frame. The rod-like element is kinematically connected to a braking element articulated to the frame. When the quarter is rotated backwards, the rod-like element causes the braking element to rotate so that it interacts with the ground.

Abstract: A roller brake for a roller vehicle such as an in-line roller skate is mounted at an end of a substantially horizontal platform. The roller brake includes a non-rotatable brake hub connected to the chassis, the hub having a horizontal axis perpendicular to a direction of forward travel. The brake hub has a circumferential periphery defining a V-shaped groove, for receiving a brake tire rotatably mounted annularly on the brake hub. The outer periphery of the brake tire is normally disposed above the ground surface but is selectively engageable with the ground surface, preferably simply by tilting the horizontal platform on an endmost ground-engaging wheel adjacent the roller brake. Contact with the ground surface engages the tire with the ground and produces rotation of the tire on the brake hub. Kinetic energy of motion is dissipated as frictional heating between the rotating brake tire and the fixed brake hub. The V-shaped groove is 120.degree. to 150.degree.