A multi-speed transmission has particular usefulness in bicycles, completely eliminating the use of the commonly used derailleur and the exposed flexible cable and the readjustment problems inherent with that prior structure. The transmission includes separate concentric gear rings which to a certain extent operate independently of each other. A shift mechanism for shifting the transmission is such the transmission can not be shifted from one gear to a non-adjacent gear without stopping at a gea...

A shift knob (1) for a gearshift lever (3) of an automatic transmission of a motor vehicle has a locking bar (5) guided axially in the gearshift lever (3) and a release button (2) which can be actuated manually for actuating the locking bar (5) in relation to the gearshift lever (3). The release button (2) is arranged in the shift knob (1) at the top end of the gearshift lever (3). The release button (2) is connected to the shift knob (1) by means of at least one lever arm (16) via a mounting si...

A shift register includes stages shifting an input signal with phase-delayed control signals and first and second supply voltages, and for applying shifted input signals as output signals and as input signals of succeeding stages. Each of the stages includes a first controller selectively applying an input signal and a first supply voltage to a first node between first to third transistors; a second controller selectively applying the first and second supply voltages to a second node between fou...

A compact shift device for shifting gears of a vehicle transmission. The shift device includes a shift lever movable in a first direction and a second direction to shift the gears of the transmission. The first direction is perpendicular to the second direction. A first movable member is connected to the shift lever to move in cooperation with the shift lever for detecting the position of the shift lever in the first direction. A second movable member is connected to the shift lever to move in c...

A shift register with low power consumption has memory circuits 15.sub.1 -15.sub.N connected in series, gate circuits in memory circuits 15.sub.2n-1 in the odd-numbered locations become conductive when clock signal CK is high, and gate circuits in memory circuits 15.sub.2n in the even-numbered locations become conductive when clock signal CK is low, wherein data signals S input are latched for output when the gate circuits are shut off. The circuit configuration is simplified. The Shift register...

A shift control mechanism for a change speed transmission, or a change speed transmission section, having selectively axially movable gears, the selective axial movement of which is effective to cause engagement and disengagement of the axially moved gear, is provided. The shift control mechanism is utilized for a four speed transmission, or transmission section, and comprises a first shift fork fixed to a first shift rail, a second shift fork fixed to a second shift rail and a third shift fork ...

A shift fork in a transmission has an upwardly extending branch whose upper end is bevelled to introduce dripping lubricant to sliding surfaces of the shift fork branch in contact with a collar with which the shift fork is engaged for shifting gears in the transmission.

An apparatus for controlling gear changes when a shifter of a transmission is moved between a forward gear and a first reverse gear position, passing through a neutral position, for preventing changes of gear when the drive shaft is revolving. The controller includes a manually operable switch for selectively actuating the shifter to move it between the forward, neutral and reverse positions; a generator rotatably connected to the shaft for generating a rotation-indicating signal; a position-sen...

A fuel cell power plant, generally, has a fuel cell stack for electrochemically converting a hydrocarbon fuel into electricity. In order for the hydrocarbon fuel to be used by the fuel cell stack, it must be steam reformed into a hydrogen-rich process gas. This process gas has a carbon monoxide level that would be detrimental to the fuel cell stack, so the process gas is passed through a shift converter to decrease the carbon monoxide level therein prior to feeding the process gas to the fuel ce...

A shift rocker for use in a gear shift mechanism, includes a bracket of forked configuration, with the bracket having spaced-apart sidewalls in parallel relation for axially displacing a shift sleeve, and an arched cross member interconnecting the sidewalls. Connected to the cross member of the bracket for introduction of force is a rail which includes, directly or indirectly, a shift slot for engagement of a shift finger in fixed rotative engagement with a shift shaft, a latch contour for a sep...