Abstract: A grommet or the like comprised of elastomeric material and having a passage formed therein is placed onto a mandrel which serves to resiliently expand the cross-sectional area of the passage; the mandrel while holding the passage to the expanded cross-sectional area places the grommet or the like in an area of cold temperature to effectively freeze the grommet or the like and thereby stabilize the expanded cross-sectional area by, through such freezing, eliminating the resilient characteristics of the elastomeric material; the stabilized grommet or the like, removed from the mandrel, is then easily slid onto a related cooperating carrier wherein the outer configuration and size of the carrier is less than that of the stabilized expanded cross-sectional area.

Abstract: A grommet or the like comprised of elastomeric material and having a passage formed therein is placed onto a mandrel which serves to resiliently expand the cross-sectional area of the passage; the mandrel while holding the passage to the expanded cross-sectional area places the grommet or the like in an area of cold temperature to effectively freeze the grommet or the like and thereby stabilize the expanded cross-sectional area by, through such freezing, eliminating the resilient characteristics of the elastomeric material; the stabilized grommet or the like, removed from the mandrel, is then easily slid onto a related cooperating carrier wherein the outer configuration and size of the carrier is less than that of the stabilized expanded cross-sectional area.

Abstract: A solenoid operated valving assembly is shown functionally between a fuel vapor canister of a vehicle and the engine of such vehicle; the valving assembly has at least two valving members a first of which is caused to at least start to open upon the attainment of first indicia of engine operation to thereby flow vapors from the canister to the engine and a second of which is caused to at least start to open upon the attainment of second indicia of engine operation to thereby flow vapors therethrough from the canister to the engine.

Abstract: A pressure transducer is shown having a pressure responsive movable diaphragm which effectively forms a wall of a pressure chamber; the diaphragm upon sensing fluid pressure thereagainst is effective for accordingly varying an electrical resistance; a passage operatively interconnects the pressure chamber with a source of fluid whereby the fluid and its pressure are communicated to the pressure chamber; the passage is shown as being helically formed in order to, within a limited axial length about which the helical passage is formed, sufficiently damp perturbations in the pressure of the fluid.

Abstract: A pressure transducer is shown having a pressure responsive movable diaphragm which effectively forms a wall of a pressure chamber; the diaphragm upon sensing fluid pressure thereagainst is effective for accordingly varying an electrical resistance; a passage operatively interconnects the pressure chamber with a source of fluid whereby the fluid and its pressure are communicated to the pressure chamber; the passage is shown as being helically formed in order to, within a limited axial length about which the helical passage is formed, sufficiently damp perturbations in the pressure of the fluid.

Abstract: A liquid level response electrical switch assembly responsive to the level of a monitored liquid is shown as having a body and a chamber-like or containment portion, electrical conductors are carried by the body for connection to as associated electrical load, a reed switch is carried by and within the body for opening and closing an electrical circuit through the electrical conductors, and a magnet positioned by a buoyant float responsive to the level of the monitored liquid is effective for actuating the reed switch.

Abstract: A thermal sensor assembly is shown as having a housing formed of first and second body sections with the first being a probe-like portion for introduction into a medium the temperature of which is to be monitored; a thermistor and an electrical switch are electrically isolated from each other and situated within the housing; the thermistor is in series with and between one of the body sections and a terminal which is connectable to associated circuitry external of the sensor assembly; the electrical switch is effective to close an electrical circuit as between the same one of the body sections and a second terminal which is connectable to additional associated circuitry external of the sensor assembly.

Abstract: A pressure transducer comprises a movement which has separate span and set-point calibrations. A subsequent calibration of the span does not adversely influence a previous calibration of the set-point. Sensed pressure is reflected as arcuate motion of a crank mechanism along a resistor. The span calibration is performed by adjusting the position of the resistor in relation to the crank's pivot. The pivotal mounting of the crank is provided by a pivot member disposed within a slot. Adjusters in transverse slots which intersect the pivot mounting slot act upon the pivot member to establish the set-point calibration. The transducer is especially well suited for fabrication and calibration by automated equipment.

Abstract: A speed and distance sensor comprises a circular magnet supported on a shaft journaled on a housing. The magnet is polarized at regular circumferential intervals and is accurately axially located within the housing. A reed switch is disposed adjacent the rotating magnet and is coupled with the varying magnetic field produced by the rotating magnet so that the reeds open and close as the magnet rotates. The reed switch is mounted within the housing on a retainer, and the retainer is selectively positionable via an adjustment screw for precisely positioning the reed switch in relation to the magnet to achieve a degree of coupling which produces a desired duty cycle characteristic in the opening and closing of the reed switch. A wiring harness is connected with the leads of the reed switch to provide for connection with an external electronic circuit. The wires and leads are accurately located by means of locators formed in the housing to promote convenient assembly.

Abstract: A thermally responsive electrical switch assembly is shown having a housing with a dielectric end portion through which is formed a passage an axial portion of which has an integrally molded thread which coacts with an externally formed thread of an electrically conductive terminal member extending through the passage; a resiliently deflectable elastomeric member, generally within the housing, frictionally engages the terminal member as to thereby mask any otherwise perceived looseness between the externally formed and integrally molded threads and, instead, cause the terminal member to exhibit an apparent smooth movement during threadable adjustment thereof.