Abstract: A rotary fluid pressure device is disclosed of the type including a roller gerotor (17) having a ring member (23) and a plurality of rollers (25) serving as internal teeth. At each end of each roller (25) is a side clearance space (85) and a small amount of lubrication fluid flows from each pressurized volume chamber through the side clearance spaces (85) into an adjacent lubricant recess (81). All of the lubricant recesses (81) are in communication with the fluid-collecting groove (79) and lubrication fluid flows from the groove (79) to the motor lubrication flow path. The lubrication flow path includes flow through a rearward bearing set (35); a forward bearing set (33); a pair of fluid passages (36); the forward splines (37, 39); and the rearward splines (43, 45). The invention results in improved lubrication generally, and of the forward splines in particular.

Abstract: A valve assembly is provided for controlling the recirculation of exhaust gases in an internal combustion engine. The assembly includes a fixed body portion having an exhaust inlet and an exhaust outlet port and a moveable transducer portion. A diaphragm is attached to the body and transducer portions to define a vacuum chamber and an atmospheric chamber in the body portion and a second atmospheric or air bleed chamber and an exhaust chamber in the transducer portion. Passages integrally formed in the diaphragm at its point of attachment to the transducer portion provide fluid communication between the two atmospheric chambers. Valve means are provided between the transducer atmospheric chamber and the vacuum chamber and between the exhaust inlet and outlet ports.

Abstract: A fluid coupling device is disclosed of the type including an input coupling member (11) rotatably disposed within an output coupling assembly (13). A portion of the output coupling assembly comprises a cover member (17) which cooperates with a housing member (15) to define an operating chamber (33), and cooperates with a cover member (35) to define a reservoir chamber (37). A cover member (17) also defines a pair of fluid inlet ports (51). A valve actuating member (55) is received in a central bore (53) defined by the input shaft (21). The coupling device includes a valving arrangement (57) including a U-shaped fulcrum element (59) and a flat, elongated valve element (61). The valve (61) passes through slots (69) in fulcrum portions (65) of the fulcrum element.

Abstract: A drivetrain (48) for an electric passenger vehicle (10) includes a battery (40) for energizing a single-phase A.C. traction motor (18) which drives a ground engaging wheel (12) through a multi-speed transaxle (20). The motor is characterized by an external ferrite permanent magnet rotor (26) drivingly engaging an input shaft (32) of the transaxle. The motor is controlled by an inverter circuit (44) and a control circuit (46) which generates switch command signals to reciprocally actuate power transistors (56 and 62) within the inverter circuit as a function of operator demand, rotor position and rotor speed. The control circuit includes a motor positioning circuit (442) which toggles the motor current when the rotor speed falls below a predetermined level to dither the rotor about a park position for a predetermined period. A pre-start rotor positioner (224) is provided to mechanically lock the rotor in its park position to ensure the availability of a high electrical starting torque.

Abstract: An energy storage device (10) is disclosed consisting of a stretched elongated elastomeric member (16) disposed within a tubular housing (14), which elastomeric member (16) is adapted to be torsionally stressed to store energy.The elastomeric member (16) is configured in the relaxed state with a uniform diameter body section (74), and transition end sections (76, 78), attached to rigid end piece assemblies (22, 24) of a lesser diameter. The profile and deflection characteristic of the transition sections (76, 78) are such that upon stretching of the elastomeric member (16), a substantially uniform diameter assembly results, to minimize the required volume of the surrounding housing (14).Each of the transition sections (76, 78) are received within and bonded to a woven wire mesh sleeve (26, 28) having helical windings at a particular helix angle to control the deflection of the transition section.

Abstract: A throttle modulation mechanism (10) is disposed between a throttle pedal (18) and a fuel control device (12) for an unshown engine. Mechanism (10) is operable during shifting modes of an unshown transmission driven by the engine to dip and boost fuel delivery to the engine for synchronizing the transmission and/or reducing shifting shocks. Mechanism (10), which is controlled by a transmission logic (14), includes a lever (16) pivotally connected at one end (16a) to link (28), at the other end (16c) to a throttle dip actuator (20), and in the middle (16b) to the fuel control via a link (30) and to a throttle boost actuator (22) via a piston rod (32). The actuators are positioned by fluid pressure in response to logic signals applied to solenoid valves (24, 26). A second embodiment of the modulation device includes a slotted connector (101a) which negates mechanical and force feedback to the throttle pedal independent of all throttle pedal positions.

Abstract: A method of cutting material from a workpiece (10) while monitoring the quality of the workpiece includes the steps of:supporting a workpiece,rotating a cutting tool (14) as it engages with the workpiece,moving the cutting tool and workpiece relative to each other through a cycle to enable the cutting tool to remove material from the workpiece,dividing each cycle of the cutting tool and workpiece into a plurality of incremental movements,sensing the torque required to effect relative rotation of the tool and workpiece during each of the incremental movements of the cycle,setting torque limits for different incremental movements in the cycle, andcomparing the sensed torque exerted between the tool and workpiece with the set torque limits and generating a signal indicative of a workpiece of unacceptable quality if the sensed torque is not within the set torque limits.

Abstract: An energy storage device (10) is disclosed consisting of a stretched elongated elastomeric member (16), disposed within a tubular housing (14), which elastomeric member (16) is adapted to be torsionally stressed to store energy. The elastomeric member (16) is configured in the relaxed state with a uniform diameter body section, transition end sections, and is attached to rigid end piece assemblies (22, 24) of a lesser diameter. The profile and deflection characteristic of the transition sections (76, 78) are such that upon stretching of the member, a substantially uniform diameter assembly results to minimize the required volume of the surrounding housing (14). During manufacture, woven wire mesh sleeves (26, 28) are forced against a forming surface and bonded to the associated transition section (76, 78) to provide the correct profile and helix angle. Each sleeve (26, 28) contracts with the contraction of the associated transition section to maintain the bond therebetween.

Abstract: A meter center enclosure (4) is divided into a metering section (8) and service disconnect section (10) by a barrier (6,12,14) which is laterally supported along a back wall of the enclosure by brackets (30) cooperatively engaging slots (22) in the barrier. Grooved insulator supports (24) are slidingly received in the slots (22) and are locked in a forward position by the brackets (30). Bus conductors (26,28) extend from the metering section (8) into the service disconnect section (10) through openings in the insulators (24) and are supported by the insulators (24). In one embodiment, insulator (24) provides the sole support (24e) for a service disconnect circuit breaker, and connectors (44) are provided for the bus conductors (26,28) which may selectively receive either plug-in (CBP) or bolt-in (CBB) circuit breakers. In another embodiment, the insulator (52) cooperates with a reversible bracket (58) to support a selected one of two dimensionally different circuit breakers (CB').

Abstract: A reduced-size thermal overload relay having a housing (2) that includes three narrow compartments (2k, 2l, 2m) in which are mounted three connector brackets (16,18,20) supporting three flat bimetal members (16j, 18j, 20j). Three narrow cassette heaters (6,8,10) are mounted at the upper part of the housing and held in by a snap-in hold-down device (12) that engages pairs of hooks (6b, 7b) at the lower portions of the heaters. A pushbutton (12a) on the hold-down device extends through a hole (3c) in the front wall of the housing for manual depression to release the heaters for removal. Each bracket (16) is H-shaped having legs (16c, 16d) for mounting it in a housing compartment (2k) and arms (16a, 16b) connected by a platform (16e) to which the upper terminal clip (6d) of the cassette heater is clamped with a screw (16q), the small angles of this platform and terminal clip automatically drawing the flat heater element (6c) into desired spacing with the bimetal member.

Abstract: An automatic mechanical change gear transmission system (10) is provided. The transmisssion (12) is a splitter type comprising a main section (48) connected in series with a blocked splitter type auxiliary section (50). The auxiliary section blockers (172) and clutch members (164) are provided with ramps (218, 220, 222, 224) which will tend to align the blockers and ramps in a nonblocking condition under the influence of biasing spring (178) if the main section is in neutral. A control unit (38) receives input signals and commands transmission shifts in a sequence including shifting the main section into neutral and shifting the auxiliary section to a new ratio during each shift procedure.

Abstract: An improved two-way torque limiting coupling (10) of the type utilizing a single helical coil clutch (18) and an automatic slack adjuster utilizing same is provided. The coupling provides a driving connection between a first (12) and a second (14) rotatable adjacent members. The first member includes a bore (24) opening to an end (20) in which one end of coil clutch is received in interference fit to define an internal clutch interface (34) and the other member defines an annular outer periphery (26) about which the other end of the coil clutch is received in an interference fit to define an external clutch interface (36).

Abstract: A solenoid operated valve having a single inlet and dual outlets. A lever means is pivotally disposed in a valving chamber and is provided with poppet means which upon movement of the lever alternately closes one outlet while the other outlet remains open. An external solenoid coil moves an armature disposed in said chamber which effects lever movement. One embodiment employs separate spaced poppets for each outlet and another embodiment employs a single poppet with opposing sealing faces for each outlet. Spring means biases said lever means against said armature means.

Abstract: A drive mechanism (26) momentarily reduces the speed of engine-driven accessories in response to vehicle acceleration or increased power demands to improve fuel economy and to provide additional horsepower for the vehicle. The drive mechanism includes an electromagnetic clutch (48) operative, when engaged, to drive the accessories at constant speeds relative to speeds of an engine (10) and a viscous coupling (60) operative, when first engaged, in response to disengagement of the clutch, to first drive the accessories at a minimum speed and then to increase the accessory speeds to minimize shift shocks when the clutch is reengaged. The coupling includes a housing (58) defining an annular compartment (108) containing an annular clutch member (92) and a viscous liquid. A working chamber (113) within the compartment, defined by confronting surfaces of the housing and clutch member, transmits torque from the housing to the clutch member via viscous shear in response to relative rotation therebetween.

Abstract: A drum brake spider assembly (100) for an expanding shoe drum brake (10) having a removable anchor pin (18) is provided. A spider member (14) is provided with an anchor pin receiving bore (39) in which the anchor pin is removably received. The anchor pin receiving bore is provided with a first counterbore (114) at the inboard end thereof and a second counterbore (118) at the outboard end thereof. The anchor pin is provided with two annular grooves (122 and 124) in which are received first and second snap rings (128 and 130). The diameter (116) of the first counterbore is smaller than the outer diameter of the first snap ring when the snap ring is radially expanded sufficiently to remove same from the first groove in the anchor pin.

Abstract: A contact structure (40, 44; 62, 63) is arranged to provide oppositely directed parallel current paths within a closed loop magnetic flux amplifier (46) to be directly separable under high overload current conditions, the flux amplifier (46) functioning to arrest the movable contact (62, 63) momentum. Manufacturing economies are realized by subassembling the stationary contact structure (40, 42, 44) and flux amplifier (46) and subsequently trapping one end (42a) of that assembly within the base (4a) and securing the other end with a single screw (68). The movable contact arm (62) comprises a plurality of blanked laminations assembled to provide improved contact (63) mounting and bearing (62d) surfaces. The molded case sidewalls are strengthened in the contact separation area by offsetting the parting line (PL) between cover (6) and base (4) closer to the bottom of base (4) and overlapping the thinner base sidewalls with thicker cover sidewalls at the offset (4e, 6e).

Abstract: A thermostat having a low force output, snap-acting thermally responsive bi-metal disc operative through a pushrod to move the blade of an SPDT switch at a pre-selected temperature. The switch has a cantilever blade formed of a unitary thin metal strip having a flexible stem with a first rigid tongue extending therefrom with a heavy current carrying moveable contact thereon for a normally closed contact set. The pushrod contacts the rigid first tongue for switch actuation. A second flexible tongue extends from the stem and has an integral low current normally open contact thereon for a contact set which is closed upon switch blade actuation. Upon further temperature rise, after switch actuation, pushrod over-travel on the first tongue is absorbed by resilient flexing of the stem and second tongue thereby providing a wiping action to the closed low current contact set.

Abstract: The parts of the three-pole contactor (FIGS. 1 and 2) are designed so as to enable economical assembly thereof without any screws or similar fasteners. A molded contact carrier (12) having windows (12a-c) that retain movable bridging contacts (14, 16, 18) and their bias springs (20, 22, 24) and armature (28) seat (12i) and snap-in securing ramps (12k, 12m) that retain a leaf spring (26) extending through a slot (28a) in the armature (28) forms a subassembly that is inserted into an upper housing part (2) that has slots (2v, 2w, 2x) into which stationary contacts (6, 8, 10) are inserted. An encapsulated coil subassembly (38) having terminals (42, 44), a bobbin (40) and a coil (4) and a return spring (36) snap-in assembled thereon is placed over the armature (28). An E-shaped magnet (46) having shading coils (48, 50) on its poles is inserted through the holes in the coil assembly (38).

Abstract: A throttle modulation mechanism (10) disposed between a throttle pedal (28) and a fuel control device (12) varies speed and torque of an unshown engine. Mechanism (10) is operable during shifting modes of an unshown transmission driven by the engine to dip and boost fuel delivery to the engine for synchronizing the transmission and/or reducing shifting shocks. Mechanism (10), which is controlled by a transmission logic (14), includes first and second levers (16, 20) interconnected for slaved movement by a torsion spring and fluid actuated cylinders (38, 40) which respectively dip and boost the throttle in response to logic signals applied to solenoid valves (50, 64). A transducer (24), mechanically connected to first lever (16), provides an electrical signal representative of throttle pedal position. Torsion spring (22) includes ends (22b, 22c) preloaded toward each other and clamping levers (16, 20 or 106) into a predetermined relationship.

Abstract: A timing control system and timer sub-assembly for microwave cooking source parallel connected with a timer and series connected with an interval time switch and a defrost cycle switch and a power level selector. The timer is operable to cycle the defrost switch at a fast rate for selected operating timer intervals of a given value or greater and a slow rate for selected interval less than the given value. The timer provides progressively decreasing "on" time of the defrost cycle switch for each cycle. The timer sub-assembly has a pawl-driven ratchet wheel having a toothed sector of lesser pitch diameter and a masking ratchet wheel having periodic deep notches spaced thereabout for permitting the drive pawl to periodically engage the teeth lesser pitch diameter for slower advance of the driven ratchet wheel for indexing a plurality of rotary cam tracks for microwave sources switch actuation.