Abstract: A compact low profile relay fabricated upon a base such as a printed circuit board. A pole piece having a ceramic coating with overlain conductive polymer strips serves as bus bar for coil connection. Spaced ferromagnetic core portions are formed integrally with the pole piece for plural coils which each lie flat when received over a core portion. A generally U-shaped armature is received over each core with the open ends of the legs of the U-shape contacting and pivoted against the pole piece for completing a magnetic loop therewith. Upon energization of the coil, the U-shaped armature passes the end of the coil to effect movement of a switch blade arm to effect switching a pair of load current contacts.

Abstract: A resilient diaphragm operated pressure switch has a Belleville spring washer with a dished spring disc nested in the center and supported on the inner periphery of the washer resisting movement of the diaphragm. An actuator member is spring biased against the disc and has one end of a toggle spring registered thereon with the other end connected to a movable switch contact blade initially in an open-circuit condition. Upon the diaphragm initially experiencing increasing pressure to a first level, the actuator of the dished disc reverses curvature and moves the actuator to effect movement of the contact blade to a closed circuit condition. Upon further pressure increase to a second level, the Belleville washer snaps over-center and causes further movement of the actuator in the same direction and causes the toggle spring to snap over-center and return the contact blade member to the open-circuit condition.

Abstract: A throttle cable intervention servoactuator having a connector link with a lefthand thread on one end and a righthand thread on the opposite end with correspondingly threaded connecting members engage the threaded ends of the link and the members each guided in a slot in a housing for non-rotating sliding movement with the connector link. A driven gear is journaled for rotation on the housing with the connector link extending centrally through the driven gear in free sliding engagement and engaged for rotation by the gear. The driven gear is rotated by a motor in response to a signal to change the effective length between the connector members when each are connected to one end of a throttle tension cable.

Abstract: An engine coolant thermostat having an annular mounting member with the poppet seat and outer peripheral mounting flange covered with a unitary elastomer cover. A thermally responsive actuator means with a movable output force member is registered against a mounting bracket extending from the mounting member. Rod means is slidably received through the poppet and upon a calibrated lost motion movement of the output force member effects opening of the poppet. A spring biases the poppet closed and is overcome at a predetermined coolant pressure to permit the poppet to open as a pressure relief valve.

Abstract: A three-port vacuum valve (10) having a thermally responsive actuator (38)n and a moveable valve member (62) with a single seal ring (66) thereon. A vacuum signal output port (24) is disposed between spaced primary (26) and secondary (22) vacuum source ports. A first (74) and a second (68) annular tapered valve seats are disposed in opposing relationship closely spaced adjacent said output port with said seal ring disposed therebetween. The valve seats are spaced such that upon said actuator experiencing a preselected temperature the seal ring is unseated from the second valve seat and is between the valve seats. Upon the actuator experiencing a given temperature differential from said preselected temperature, said seal ring seats against said first valve seat.

Abstract: A feedback potentiometer type servoactuator having a plastic housing shell with small high RPM low voltage motor and non-metallic gear reduction train for driving an output shaft. The shell and cover plate provide structural support for gear journalling and the cover plate has an electrically resistive plastic strip baked onto the inside of the cover. Contacts mounted on the output gear for movement therewith wipe the resistive strip to provide variable resistance for an output shaft position feedback signal. The motor pinion and first stage reduction gears are made of urethane thermoplastic elastomer, the second stage gears of acetal plastic and the final gears are formed of 30% glass fiber filled polyester plastic for providing quiet running and long gear life.

Abstract: A vacuum operated EGR valve/controller having a vacuum signal responsive diaphragm converted to operate the EGR poppet valve. A flow limiting orifice is provided upstream of the valve and a flow sensing pressure tap provided intermediate the valve and the orifice. Flow pressure is sensed by a piezoresistive transducer which gives an electrical signal indicative thereof. In one embodiment, the transducer is stationary and flow sensing tube is extended to the valve body. In a second embodiment, the transducer is mounted on the diaphragm for movement therewith and flow sensing is internal through the valve actuator. In another embodiment, a flow sensing orifice is provided downstream of the valve and the transducers has a reference and dynamic probe for sensing the differential of flow pressure on opposite sides of the sensing orifice.

Abstract: The RPM bias valve combines a first fluid signal which varies inversely with the throttle position or with other engine conditions and a second fluid signal which varies with engine speed to produce a modulated output signal which varies as a function of both. A pressure responsive diaphragm (68) separates a first signal chamber (62) and a modulated output signal chamber (66). The diaphragm is also biased by an extension spring (90) which is connected with a cam follower (104). The position of the cam follower, hence, the biasing force or pressure applied by the extension spring, is controlled by a cam (102) and a rolling diaphragm (106) which is operated upon by the second fluid signal. A first valve (70) selectively connects the first and modulated signal chambers to reduce the vacuum in the modulated output signal chamber when the pressure responsive diaphragm (68) is out of its equilibrium position in one direction.

Abstract: A food mixer having a stand with a mixer head pivotally mounted thereon for mixing foods is disclosed herein. The mixer includes means for cooling a drive assembly by drawing air in through a forward portion of the head and exhausting it out a bottom portion of the stand. The mixer is provided with a locking latch interconnecting the head and the stand in order to mix or knead properly heavy or viscous foods, such as bread dough. A pair of dough hooks, which are adapted to force dough away from the head during kneading, are detachably connectable to the head. A high outer wall turntable is rotatably supported on a base of the stand by a peripheral thrust bearing to provide a stable platform for a mixing bowl. Each mixing bowl used with the mixer has the same diameter bottom and lower contour regardless of bowl volume. A mechanical governor is connected to an electronic control to provide accurate motor speed regulation throughout the range of motor speed operation.