Abstract: Engine exhaust gas is recirculated by a fluid pressure actuated valve receiving a control signal from a controller which receives and modulates engine induction vacuum to provide a primary source and receives a carburetor throttle-blade controlled suction as a secondary source and compares the primary and secondary sources and discriminates therebetween to provide the lesser as the outward control signal.

Abstract: An electrical circuit element (16) is maintained in place within the drop center (24) of a vehicle wheel (10) by encasing the circuit within a cylindrical plastic housing (14) which is formed into an arcuate shape. The housing is held in place by wires (18, 19) which are connected to the ends of an extension spring (22) which applies sufficient tension to keep the housing from moving during heavy braking or due to centrifugal force. The mounting assembly is configured to move to an out of the way position when contacted by a tire iron or by elements of a tire mounting machine to prevent damage to the circuit when a tire is mounted or demounted. In accordance with another embodiment of the invention, the circuit (16) is encased within a unitary annular member (56).

Abstract: Disclosed is a resilient fatigue resistant flow control device (140) for maintaining a substantially constant rate of fluid flow through a passageway (64) under varying fluid pressure differentials across the device. The device comprises at least one metering orifice (72) extending between the upstream and downstream sides within a defined region (R) that is circumscribed on the downstream side by a peripheral surface (78) that is adapted to rest directly against a seat (68) in the passageway. A plurality of spaced-apart bypass channels (84) extend through the device between the upstream side and the downstream peripheral surface that are positioned so that at least a portion of each channel intersects region (R) adjacent the peripheral surface so that the compression and expansion of region R adjacent the peripheral surface is able to control the amount of fluid flowing through the channels.

Abstract: Disclosed is an improved fastening device (70, 72, 74, 76, 78) for securement of a threaded member such as a screw ("s") to an article such as a panel or the like. The device is of the type having a base member (12) having a frusto-conical projection (14) having a lower and higher helical edge (16, 16a) surrounding an opening (40, 42') therethrough which in conjunction with a pair of resilient finger portions (30, 32') having respective free-ends (34, 36) spaced-apart from each other along an axis ("y--y") defined therebetween of which one finger portion is displaced a distance ("x") further from the base member than the other finger portion to provide a means of engaging the threads of the threaded member.

Abstract: A gas valve of the type having a movable resilient poppet attached to the free end of an electrically heated cantilever bi-metal arm. The poppet is preloaded by the arm to the closed position against a valve seat by the bi-metal arm and is lifted by warping the bi-metal arm with a predetermined electrical current. The poppet has a necked position received through an aperture near the free end of the arm. An annular bead ring is formed on the poppet and surrounds the neck. The annular bead is resiliently contacted by the surface of the arm in the preloaded condition.

Abstract: A bypass drive line (27) for a torque converter type automatic transmission (11) in which the bypass drive line includes a viscous coupling (30). The viscous coupling is of a sandwich construction including an annular body member (32) formed of aluminum, an annular cover member (34) of steel secured at its outer periphery (34a) to the outer peripheral portion (32a) of the body member and radially inwardly thereof spaced axially from the body member to define a viscous fluid chamber therebetween, and an annular clutch member (36a) disposed in the chamber and having a central hub portion (36e) adapted to be drivingly connected to the output shaft (16) of the torque converter. Confronting portions (36e, 32f) and (36c, 36d) of the body and clutch members define closely spaced working area, for viscously transmitting force from the body member to the clutch member.

Abstract: A variable resistor (44) and conductors (36,38,42,46) for the speed control circuit are printed on a flexible insulating film (28) held against a flat heat sink (24) in an upright plane by a deflected conductive tab (34) protruding within an aperture (30) in the film pressed over the anode of a thyristor (26) soldered to the heat sink (24). The resistance (44) and collector (46) elements of the variable resistor are formed on a flap (32) which is folded over in a horizontal plane to present uniformly disposed surfaces for engagement by a trigger-carried wiping contactor (54). A chip capacitor (48) is soldered to conductive segments (36,38) of the printed circuit.

Abstract: Disclosed is a self-tensioning motor transmission control system having a manually positioned driver member that moves planarly to remotely move a driven member that is operably connected to a gear change mechanism and moves planarly to effect a change in the transmission gears by means of a plurality of flexible force transmitting members, such as cables, that are connected to the driver and driven members in such a manner that the force transmitting members are self-tensioning and are subjected only to tensional pulling forces.

Abstract: A variable mechanical advantage/variable effective length torque arm assembly (100) for a synchronized transmission is provided. The torque arm assembly comprises a substantially rigid body (102) fixedly mounted to a shift shaft (36) at one end (104) thereof for axial and rotational movement therewith. The body is provided with an axially extending elongated slot (106) in which a pivot pin (124) is received for pivotably attaching an axially movable control rod (22) to the body of the torque arm assembly. A biasing spring (134) bias the pivot pin to a first end of the slot closer to the axis of the shift shaft to define a first effective length (138) of the torque arm assembly which biasing force may be overcome by a sufficient resistance to rotation of the shift shaft (36) allowing the pivot pin to move away from the axis of the shift shaft to define a second effective length (140) of the torque arm assembly greater than the first effective length.

Abstract: A fluid coupling device is disclosed of the type including an output coupling (13) and an input coupling member (11). The speed of operation of the coupling device is determined by the amount of fluid in the operating chamber (37), and fluid communication from the reservoir chamber (41) into the operating chamber is controlled by movement of a valve arm (49) relative to a fill opening (50). The fill opening includes an outer edge (79) which is disposed at an angle relative to a radial line, such that the valving is of the modulating type, i.e., movement of the valve arm in response to increasing temperature results in radially outward movement of the outermost point of the flow area. In accordance with the invention, the valve arm defines an included open area (73) having a leading edge (74) and a trailing edge (75). The flow area is determined by the area of overlap (77,81) of the open area (73) and the fill opening (50).

Abstract: A pilot operated solenoid actuated valve assembly having a differential pressure sensing diaphragm for opening the main valve in response to loss of pressure through a pilot flow valve from a control pressure chamber. The pilot valve-armature is housed in a non-magnetic guide which is sealed about the diaphragm to form the control pressure chamber. Tubular pole segments surround the guide and define a magnetic air gap. An auxiliary pole piece is loosely received in the guide and is spring biased away from the armature. The pole piece enables the armature to be held fully open at a substantially reduced level of voltage from the actuation or service voltage.

Abstract: An integral multiswitch display panel (FIG. 3) having a plurality of pushbutton switches (A1-4, B1-4, C1-4, D1-4) mounted thereon along with a signal lamp (16) for each switch. A control circuitry P.C. board (44) and a display drive P.C. board (10) are common to all the switches with the control contacts (40, 42) of the switches controlling the displays (24) within the respective pushbuttons to provide on-off or alpha-numeric informational indications in response to operation of the bushbutton switches. The printed circuit lines of the control circuitry P.C. board (44) are connected through hermetically sealed connectors (50, 52, 54) at the bottom of the display panel to external controlled circuits with at least some of these lines being connected to the display drive P.C. board (10) for controlling the displays (24). The pushbuttons are environmentally sealed by a common seal (8) to prevent dirt, water, and the like from entering inside the panel housing (2, 4).

Abstract: Disclosed is a bolt fastener adapted to rotatably or non-rotatably secure a bolt to a frame through an aperture therethrough. The fastener is provided with a base member having a slot therethrough and a resilient arm that extends upwardly from an edge of the base member and, in spaced relationship, across the side thereof that is to face away from the side of the frame against which the base member is to be laid and then downwardly past an opposite edge of the base member and then inwardly towards a plane generally transverse to the plane of the base member to a free-end thereof disposed in the side of the base member facing towards the frame against which the base member is to be laid to provide an open-ended clip.

Abstract: A transducer for providing a modulated fluid pressure control signal having an electromagnetic stator operable in response to an electrical control signal to apply a magnetomotive torque to a rotary valve member for controlling fluid flow to and from a control signal chamber. A diaphragm senses the difference between the control signal chamber pressure and atmospheric pressure and is operable in response thereto for moving the rotor axially for varying the pole overlap and magnetomotive torque on the rotor.

Abstract: Disclosed is a flame retardant electrical cable able to meet or exceed the flame spread requirements of Underwriters Laboratories Tunnel Flame UL 910 while minimizing or eliminating halogen, particularly fluorine content from the cable by utilizing a first non-fluocarbon polymer and compositions based thereupon for use in making one of the conductor insulation or the protective jacket of the cable and a second non-fluorocarbon polymer or fluorocarbon polymer which may be the same as or different from the first polymer and compositions based thereupon for use in making the other of the conductor insulation or the jacket of the cable where the first and second polymers and compositions based thereupon have a composite Steiner Index of: ##EQU1## where: S.I. is less than about 3500;mass is the respective number of pounds of the respective polymers included in the cable subjected to the UL 910 Test; andSteiner Index (S.I.) is (A)(B)(C)(1-0.I.

Abstract: Upon energization a solenoid (58) activates a pilot valve means (44,46) for opening a pilot flow passage (34) causing flow from a pilot portion (52) of the valving chamber. Flow from the main valving chamber (18) and through a bleeder passage (50) is insufficient to prevent a loss of pressure in the chamber (52) and the pressure in valving chamber (18) urges diaphragm pad (29) upward away from contact with valve seat (26) to permit flow from chamber (16) to outlet (20). A diaphragm insert (30) has a portion (32) with a lip (68) extending into a narrow section (66) of outlet (32) for providing a downstream restriction to maintain sufficient pilot circuit differential to provide valve movement until rim (68) moves out of passage (66) thus providing any desired stroke by adjusting the level of (66) to prevent trapping fine particles of foreign matter at the valve seat.

Abstract: An onboard tire inflation system (10) for controlling and/or monitoring the inflation pressure of a tire (18) from a remote control (22, 24) is provided. The system includes automatic valve means (32, 88) for isolating the interior chamber (20) of the tire and relieving fluid pressure on the rotary seals (78, 80, 82) during system steady state ("off") operating conditions.

Abstract: A shift mechanism (66, 68, 70, 72) for shifting a member (22, 22A', 22B, 27C) for performing an operation at a preselected one of at least two spaced-apart operating positions. The mechanism comprises a threaded screw (10, 10A, 10B, 10C) that is rotated about its central longitudinal rotational axis ("C") by a motor (14, 14A, 14B, 14C) to move a drive nut (12, 12A, 12B, 12C) in opposite axial directions therealong relative the particular direction the shaft is rotating and causes the drive nut to compress a resilient biasing means (20, 20', 20A, 20A', 20B, 20B', 20C, 20C') which is adapted to urge the member (22, 22A', 22B, 27C) to the particular position in a preloaded condition such that the operation is able to be performed by overcoming any resistance incurred in performing the operation or upon removal of the resistance upon the occurance of an event enabling the operation to occur.

Abstract: A brake or clutch having two relatively rotatable members and a hollow fluid-distensible resilient annular tube frictionally engaging one of the members. The tube is split and the ends butted together. And at the butt ends of the tube means are provided for increasing the durability and life of the tube.

Abstract: A variable mechanical advantage/effective length shift lever assembly (12) of the first class lever type for a synchronized transmission (10) is provided. The shift lever assembly comprises a relatively solid section (56 and 68) and a resiliently deflectable section (70). The shift lever assembly (12) defines a second portion (62) having a first effective length (72) when the deflectable section (70) is in the nondeflected position thereof and a second shorter effective length (80) upon deflection of the resiliently deflectable section (70).