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    • 3. 发明授权
    • Back-pedal brake operator and braking system for multi-speed bicycles
    • 用于多速自行车的后踏板制动操作器和制动系统
    • US4134481A
    • 1979-01-16
    • US658129
    • 1976-02-13
    • Franklin J. Calderazzo
    • Franklin J. Calderazzo
    • B62L3/08B62L5/00B60K29/02F16D67/00
    • B62L5/003B62L3/08
    • Back-pedal brake operator for multi-speed bicycles in which the brake operating action is obtained by turning the foot pedals rearwardly a short distance from any position which the pedals may occupy at the instant when the driver wishes to apply braking action, the braking operation being obtained without utilizing the sprocket chain to apply the braking force, and the brakes are automatically released without any "lock-up" effect when the driver starts pedaling forward in the normal manner. The back-pedal operators shown are directly associated with the sprocket assembly as a compact self-contained unit integrated therewith and can be installed as original equipment by bicycle manufacturers or can be retrofitted by bicycle shops or owners on existing multi-speed bicycles. The bicycle is permitted to be wheeled freely rearwardly without the brakes becoming applied. The back-pedal brake operator can be adapted for adjustable automatic proportioning of the relative braking efforts to be exerted on the rear and front wheels. This invention also enables dual actuated braking systems to be installed in multi-speed bicycles for either hand or foot operation (or both) of the brakes. The presently preferred braking system automatically applies a relatively greater braking effort to the rear wheel than to the front wheel.
    • 用于多速自行车的后踏板制动操作器,其中通过将脚踏板向后旋转距驾驶员希望施加制动动作时的任何位置短的距离获得制动操作动作,制动操作 在不利用链轮链条施加制动力的情况下获得,并且当驾驶员以正常方式向前行进时,制动器自动释放而没有任何“锁定”效应。 所示的后踏板操作器与链轮组件直接相关联,作为与之结合的紧凑型独立单元,并且可以由自行车制造商作为原始设备安装,或者可以由自行车商店或所有者在现有的多速自行车上进行改装。 自行车被允许自由地向后自由,而不会施加制动。 后踏板制动操作器可以适用于可施加在后轮和前轮上的相对制动力的可自动调节比例。 本发明还使双驱动制动系统能够安装在用于手动或脚踏操作(或两者)制动器的多速自行车中。 目前优选的制动系统相对于前轮自动地对后轮施加相对较大的制动力。
    • 4. 发明授权
    • Last resort emergency braking system for heavy vehicle
    • 重型车辆最后的紧急制动系统
    • US3994374A
    • 1976-11-30
    • US598341
    • 1975-07-23
    • Raymond E. Gill
    • Raymond E. Gill
    • B60T1/00B60T13/12F16H61/00B60K29/02
    • F16H61/0059B60T1/005B60T13/12Y10T74/19637
    • An emergency braking system for a vehicle having a transmission of the type having a plurality of selectively pressurized control ports for operating respective clutches for engaging the drive gears in predetermined combinations to provide respective driving ratios. An auxiliary pump of the positive displacement type is driven by one of the vehicle wheels to produce a source of emergency pressure fluid which is available as long as the vehicle is in motion. Emergency valve means are provided for connecting the output of the auxiliary pump simultaneously to a plurality of the control ports on the transmission which tends to connect the gears in contradictory combinations thereby to block the transmission against rotation to provide emergency braking for the vehicle wheels which are connected to the transmission. The auxiliary pump is bridged by pairs of check valves connected face-to-face and back-to-back so that pressurized fluid is available at the output regardless of whether the vehicle is moving forwardly or backing up. The emergency valve means is in the form of an override valve having a set of normal inlet ports connected to the respective control lines and outlet ports connected to the respective control ports of the transmission. The override valve has an emergency inlet port and a plunger responsive thereto which acts to connect the emergency inlet port overridingly to the control ports of the transmission when pressurized fluid is applied from the auxiliary pump.
    • 一种用于车辆的紧急制动系统,其具有这种类型的变速器,所述变速器具有多个选择性加压的控制端口,用于操作各个离合器,用于以预定的组合接合驱动齿轮以提供相应的驱动比。 正排量的辅助泵由车轮之一驱动以产生紧急压力流体源,只要车辆运动就可以使用。 提供了紧急阀装置,用于将辅助泵的输出同时连接到传动装置上的多个控制端口,该多个控制端口倾向于以相互矛盾的组合连接齿轮,从而阻止变速器的旋转以为车轮提供紧急制动, 连接到传输。 辅助泵通过面对面和背对背连接的成对止回阀桥接,使得加压流体在输出处可用,而不管车辆是向前移动还是向后移动。 紧急阀装置是一个超控阀的形式,其具有连接到相应控制线的一组正常入口端口和连接到变速器的相应控制端口的出口。 超控阀具有紧急入口和响应于此的柱塞,当从辅助泵施加加压流体时,其用于将紧急入口端口重叠地连接到变速器的控制端口。