Abstract:
A hydraulic/mechanical braking system for a vehicle comprises a cam (128) keyed onto a transmission shaft or a trailing wheel and at least two hydraulic cylinder assemblies (126,129) including a cam follower (127). A hydraulic circuit (C) connects the hydraulic cylinder assemblies together. A master brake valve (113) controls the flow of fluid in the circuit. Actuation of the master brake valve (113) obstructs the flow of fluid and hence the reciprocation of the hydraulic cylinder assemblies, forcing the cam following against the cam to resist rotation. The system further comprises an energy recovery system configured to transfer energy from the hydraulic fluid flowing in the hydraulic circuit to generate electricity and/or to recover heat from the hydraulic fluid flowing in the hydraulic circuit.
Abstract:
A wheel immobilizer (10, 54) for substantially preventing rotation of a wheelchair wheel or tire about a central axis thereof is provided comprising a pivoting wheel stop (24) carrying a detent (46) and a rotating cam (30) having a receiver (48). The detent seats in the receiver when the wheel immobilizer is in an unlocked position (with the wheel stop held at a spaced distance from the wheel) to allow rotation thereof. A lever (22) is operably connected to the cam, whereby actuating the lever rotates the cam and unseats the detent from the receiver, urging a wheel-contacting surface (42) of the wheel stop into locking contact with the wheel. In another aspect, a wheel locking assembly is provided comprising paired wheel immobilizers as described which may be operated independently. In still another aspect, a wheel locking assembly is provided comprising a first and second wheel immobilizer, wherein the first and second wheel immobilizers are operably linked by a flexible linkage (56).
Abstract:
A hydraulic/mechanical braking system for a vehicle comprises a cam (128) keyed onto a transmission shaft or a trailing wheel and at least two hydraulic cylinder assemblies (126,129) including a cam follower (127). A hydraulic circuit (C) connects the hydraulic cylinder assemblies together. A master brake valve (113) controls the flow of fluid in the circuit. Actuation of the master brake valve (113) obstructs the flow of fluid and hence the reciprocation of the hydraulic cylinder assemblies, forcing the cam following against the cam to resist rotation. The cam (128) is formed with two opposing flat faces (142, 143) in order to provide an anti-lock braking system (ABS).
Abstract:
A braking system is presented that comprises a brake sphere rotor that is mounted to the wheel hub of an axle. The braking system incorporates a caliper arm assembly that comprises at least one caliper arm. Each caliper arm further comprises hemispherical friction material located between the caliper arm and the brake sphere rotor.
Abstract:
Attachments for a manual wheelchair arc provided for navigating a wheelchair over obstacles and uneven terrain, such as a typical curb on a street, 'The attachments provide for regulating the movement of the wheelchair as the wheelchair descends the curb and to prevent the wheelchair from flipping over during such movement. The attachments include a front caster wheel slider assembly on each side of the wheelchair, a follower wheel assembly and a track belt damping bar. The from caster wheel slider assembly includes a piston that will quickly push the front caster wheels down after they roil over the top edge of the curb. The follower wheel assembly acts a sensor that will release the piston in the assembly after the front caster wheels roll over the top edge of the curb. As the back wheels of the wheelchair roll over and down the curb, the track belt damping bar slows the descent of the wheelchair.
Abstract:
An improved auto-chocking enabled cargo dolly that is towable by ground support equipment. The dolly has a frame, wheels attached to the frame that support the frame and rotate to allow movement of the frame, a tow bar, a linkage in communication with the tow bar and that actuates when the tow bar is raised, and a wheel engagement chocking system fixed to the dolly frame and disposed to selectively engage at least one of the wheels attached to the dolly frame. The wheel engagement system is responsive to a position of the linkage, where the wheel engagement chocking system applies pressure directly to at least one of the wheels to hold the wheel(s) in place when the linkage is actuated by the tow bar.
Abstract:
본 발명에 따른 경사로 감지 및 감속 기능이 구비된 제동 장치는, 차체에 고정되고 바퀴가 회전 가능하게 결합 되는 프레임; 상기 프레임의 상부에 배치된 제동 회전축에 일단부가 회전 가능하게 결합 되는 막대 형상의 경사 감지 부재; 상기 제동 회전축에 회전 가능하게 결합 되며 상기 경사 감지 부재에 연동하여 움직이는 막대 형상의 진자 부재의 하단부에 회전 가능하게 결합 되는 클러치 휠; 상기 바퀴의 내주면에 배치되어 상기 바퀴와 일체로 회전하며 상기 클러치 휠과 착탈 가능하게 결합 되는 환상의 래치 부재; 및 상기 제동 회전축에 회전 가능하게 결합 되며 상기 진자 부재에 회전 가능하게 설치된 감속 기어를 매개로 상기 클러치 휠에 종속적으로 회전하며 상기 바퀴의 내주면과 마찰 되는 브레이크 패드가 복수 구비된 회전 브레이크 부재;를 포함한 것을 특징으로 한다.
Abstract:
Un frein utilise la collision d'une masse (1) avec un système produisant des chocs sur des structures fixées au véhicule. L'énergie d'un élément en mouvement de rotation (13) du véhicule est utilisée pour mouvoir une masse (1), et dissiper l'énergie sur les structures fixes. Les chocs sont générés par la masse (1), mue par des pièces mouvantes (10). La masse (1) percute sur le bout (3) et retourne sur sa place verticale.
Abstract:
An improved structure for an electric actuator unit for use in a brake assembly. According to an embodiment, a drum brake assembly comprises a mounting flange having an abutment; a backing plate secured to the mounting flange, the backing plate having a pair of brake shoes supported thereon; and an electric actuator unit for actuating the drum brake assembly to selectively move the brake shoes between a braking and a non-braking position, the electric actuator unit including a motor, a gear-set operatively coupled to be driven by the motor, a spindle nut operatively coupled to be rotationally driven by the gear-set, a pull rod operatively coupled to be translatorily driven by the spindle nut, and a brake shoe actuation link assembly operatively coupled to be actuated by the pull rod to thereby move the brake shoes between the braking and non-braking positions, the pull rod being operatively coupled to the brake shoe actuation link assembly by a link, the link having a first end pivotally connected to the pull rod and a second end pivotally connected to a second member of the brake shoe actuation link assembly.