A speed change gear system for providing at least four forward drive speed ranges and one reverse drive speed range includes planetary gear sets of the single-pinion type and simple planetary gear sets of the double-pinion type as well as a plurality of clutches and brakes. As a result of the coupling and uncoupling of the clutches and brakes, the movable elements of the gear sets are suitably coupled so as to attain the various speed ranges.

In a spool-sleeve type electromagnetic change-over valve the dimension of the non-valving holes in the axial direction of the sleeve is made considerably larger than the comparable dimension of the valving holes and the total area of a row of the non-valving holes is similarly made much larger than a row of the valving holes so that the spool stroke is kept small while increasing the air flow capacity of the valve.

An epicyclic change-speed hub for a bicycle has a driver which overlaps both the planet cage and gear ring in the axial direction of the hub and is connectable with such planet cage and gear ring by respective pawl and ratchet couplings. A spring-loaded coupling sleeve is provided which is movable axially of the hub and such sleeve serves to control, according to its axial position, the operation or otherwise of the coupling between the driver and the planet cage. The coupling sleeve is in two p...

A quick-change collet is disclosed with a tool holding insert, fitted in a collet sleeve and with a locking device releaseable by an outer sleeve for retention and driving the insert in the collet sleeve. The outer sleeve is rotatably journalled on the insert and the bearing is so connected with the insert that the insert accompanies the outer sleeve when this is used as a hand hold to move the insert with tool out from the collet or to place it in the collet.

A temperature change sensing device which is adapted to be used in conjuction with an audible or visual warning device, comprising a temperature sensitive means for rotating a first disc, having disposed about its surface at least one of a first cooperative coupling means. These first cooperative coupling means coincide with a second cooperative coupling means located on a second disc. When the ambient temperature reaches the preset temperature of the sensing device, the temperature sensitive me...

A speed change gear system of the planetary gear type suited for applications within fluid couplings used upon automotive vehicles includes an input shaft and a first planetary gear set which includes a first sun gear, a first planetary gear engaged with the first sun gear, a first ring gear engaged with the first planetary gear, and a first carrier rotatably supporting the first planetary gear. A second planetary gear set similarly includes a second ring gear drivingly connected to the first ca...

A quick change number indicator for signs which display various number digits such, for example, as a sign used for indicating the price of gasoline. Each digit is exposed at a window in the face of the sign and it is a number formed in block style with horizontal and vertical bar portions making up the number. Three rotating indicators are mounted upon the sign behind the window in such a manner that selective rotation of these indicators will present various horizontal and vertical bar portion...

A slope change detector circuit uses a differential amplifier to produce an output signal having two levels, the change of one to the other of which is indicative of a slope change in an input electrical signal. A first input of the differential amplifier communicates directly with a signal source, while a second input communicates with a signal source through a delay network. The delay network includes a switching circuit between the signal source and the differential amplifier comprising a fie...

A speed change gear system of the planetary type suited for applications to fluid couplings utilized upon automotive vehicles includes at least first, second, and third planetary gear sets suitably interposed between an input shaft and an output shaft, first and second clutches, and first, second, and third braking means. The first planetary gear set may include a first sun gear, a first planetary gear engaged therewith, a second planetary gear engaged with the first planetary gear, a first ring...

A buoyant float body having a line receiving axial bore therethrough. A full length radial slot communicates with the axial bore with the inner end of the slot being defined by a second axial bore immediately adjacent to and parallel with the line receiving axial bore. An elongated retaining pin is slidably positioned within the second bore and includes a laterally offset wedge or retaining member which can be selectively inserted into one end of the line receiving bore for a locking of the line...