Abstract: A countershaft automatic transmission for vehicular use is disclosed. The transmission has four forward gears which operate using two clutches and two dual synchronizers, The two clutches are mounted on a main shaft with associated gear clusters and the synchronizers are mounted on a countershaft with associated mating gear clusters. Reverse gear uses another synchronizer mounted on a lay shaft with associated gearing. Gear engagement is accomplished by actuating a hydraulic clutch after having shifted a synchronizer to select the gear to be engaged.

Abstract: A fastener-backstop member secures the coil assemblies to the housing of a print head by means of a flange portion at one end and a plurality of fingers at the other end thereof. The member has a flat surface between the ends thereof to provide a home position for the printing elements.

Abstract: A voltage compensating driver circuit uses a resistor and a zener diode to remove the effect of potential difference between logic ground and power ground on the comparative function of the circuit and the supply voltage is applied as an input to the comparative function.

Abstract: A wire matrix print head includes a generally circular portion for supporting a plurality of electromagnetic actuators and their associated armatures for driving print wires which are supported and guided in a nose portion of the housing a precise distance from a non-printing to a printing position. The print wire support and guide system is assembled separately from the main body of the print head to facilitate the insertion of the print wires.

Abstract: A matrix print wire solenoid used in a wire matrix printer and including an enclosure member releasably secured to one end of the solenoid by a spring member deformed by the outer surface of the enclosure member to pre-load the enclosure member and an energy absorbing member located adjacent the enclosure member. A plunger member to which one end of a print wire is affixed is located adjacent the energy absorbing member for engaging the member during the rebounding movement of the plunger member enabling the energy absorbing member to transmit impact forces to the enclosure and the spring members.

Abstract: A plurality of solenoid bobbins or bobbin wound coils are collectively attached to and supported from one surface of a printed circuit board and the coil wires are securely connected to the conductors on the board.

Abstract: A cluster or array of ink jet printing elements consisting of two or more inclined rows of tubular transducers are folded or indexed in an interleaf pattern to maintain the nozzles of the transducers in parallel manner for use in a compact print head.

Abstract: An ink jet transducer operates on pressurized ink which is released on demand by action of an electromagnet operating to unseat a magnetic ball seated on the nozzle. Ink droplets are formed and are caused to travel in a path along the nozzle axis to impact on record media.

Abstract: A sheet of optical fibers, circular at one end thereof and unfurled at the other end to form a straight line, is used to transmit laser-emitted light through a rotating prism and onto a photosensitive surface for electrophotographic printing or copying.

Abstract: A matrix print wire solenoid has a small diameter print wire which wire is propelled against printing paper and inking ribbon by the linear motion of the solenoid plunger, to which the print wire is attached, in an improved impact printer having a plurality of solenoids positioned in a row for use in dot matrix printing. The solenoid features a low cost construction, a reduction in size, and increased operating speed, and has pole pieces which are separated by an inner gap and which pieces are aligned with a coil bobbin which provides a guide surface for the armature plunger. The space between the plunger and a forward bushing or spacer is occupied by a coil spring which has one end seated over a portion of the armature and the other end seated against the face of the bushing. The coil bobbin defines an air gap between one pole piece and the armature.