Abstract: A vehicle is provided with a transmission having an inductor assembly. The inductor assembly is mounted within the transmission such that it is directly cooled by transmission fluid through at least one of spraying, splashing and immersion. The transmission includes at least one gear that is configured to, when rotating, transmit torque between an input and output of the transmission and splash fluid onto the inductor assembly to cool the inductor assembly.

Abstract: A gas tap including a gas path includes an electromagnetic safety valve for closing the gas path is provided. The safety valve includes an armature housing and having a mobile magnetic anchor in the housing and a valve seat. The mobile magnetic anchor includes a valve closing element which presses on the valve seat to close the gas path and an electromagnetic coil for activating the mobile magnetic anchor and the valve closing element to close the gas path when voltage is applied to the electromagnetic coil. Also, the electromagnetic coil is arranged as a separate component outside of the armature housing on a magnetic insert.

Abstract: A diaphragm pump (1) having a diaphragm (11), a solenoid with a movable magnetic armature (8) as a drive element for the diaphragm (11), and a stop element (9) for adjusting the stroke for the drive element (8). The diaphragm pump includes at least one elastic damper (36) between the drive element (8) and the stop element (9), which elastic damper (36) has at least one compression chamber (26) which is surrounded and formed by at least one elastic boundary wall and by at least one rigid boundary wall of the drive element (8) and/or stop element (9).

Abstract: A fast engage, slow release electrical actuator combines an electromagnetic actuator with a thermal actuator, the latter which retains the electromagnetic actuator after the former has been actuated to delay the release thereof.

Abstract: An electromagnetic actuator 10 for opening and closing a cylinder valve 14. The actuator includes an opening coil 20, a closing coil 22, a magnetic armature 26 which is disposed between coils 20, 22 and which is fixedly attached to the stem or shaft portion 28 of valve 14, a pair of conventional valve springs 30, 32, and a pair of pneumatic dampers or air cushioning assemblies 34, 36. Pneumatic dampers 34, 36 are effective to selectively decelerate the moving components of the actuator as they approach their respective seats during valve opening and valve closing events, thereby substantially reducing noise and vibration harshness (“NVH”).

Abstract: A gas exchange valve control for internal combustion engines includes an electromagnetic actuator equipped with gas springs. The gas exchange valve control has an armature, which drives the gas exchange valve and is arranged to oscillate between stroke-separated switching magnets against the gas springs. The armature serving as the separating piston between the gas springs is moveable without friction in a closed armature stroke space. A housing-like yoke, which encloses the armature stroke space, including the adjacent switching magnets, exhibits between the switching magnets a device which serves to shorten the respective magnetic circuit of the respective switching magnet.

Abstract: An electromagnetic actuator includes an electromagnet having a pole face, an energized state for generating an electromagnetic force and a de-energized state; and an armature movable towards and away from the pole face in a travel path extending from a first end position remote from the pole face to a second end position at the pole face. The armature assumes the second end position in the energized state of the electromagnet. A return spring urges the armature away from the pole face and toward the first end position. Further, a fluid damping unit is provided for braking a motion of the armature along a terminal portion of its travel path shortly before its arrival into at least one of the end positions for effecting a soft arrival of the armature into such end position.

Abstract: An apparatus for reciprocating an engine valve between open and closed positions in an internal-combustion engine includes an electromagnetic actuator having first and second mutually spaced electromagnets for generating electromagnetic forces; and an armature disposed between the first and second electromagnets and movable in response to the electromagnetic forces. The armature is operatively coupled to the engine valve to cause it to reciprocate between its open and closed positions. First and second gas springs are coupled to the armature for opposing the electromagnetic forces generated by the first and second electromagnets, respectively. A pressurized gas source supplies the first and second gas springs with pressure and a control arrangement varies the pressure in the first and second gas springs. A positioning spring is coupled to the engine valve for moving the engine valve into its closed position when the first and second gas springs are in a depressurized state.

Abstract: Solenoid apparatus having a substantially cylindrical casing, an electro-magnetic coil, a plunger axially aligned and slideably mounted to the casing, a housing hermetically mounted to an end of the casing and a vacuum source operatively coupled to the external port. The plunger has a first end extending outside of the casing, a second end and an internal passage extending from the first end to the second end. The electro-magnetic coil is selectively energizeable for moving the plunger between a first position and a second position. The housing corresponds to the plunger second end to define an inner chamber which encloses the plunger second end. The housing includes an external port connected to the inner chamber so as to provide an unobstructed pathway from the external port to the first end of the plunger via the internal passage and the inner chamber regardless of whether the plunger is in the first position, the second position or therebetween.

Abstract: A refrigerator with a freezer section and a passage for the flow of ice through the closed freezer section door is provided with a solenoid-like actuator which is effective for quickly opening a related ice dispenser door upon initiation of the flow of ice, and which is effective for relatively slowly closing the related ice dispenser door to thereby assure that further ice will not pass into the passage after the ice dispenser door is closed.

Abstract: An interrupted electric circuit recloser for reclosing an interrupted high voltage electric circuit system and a solenoid to be utilized for use in a sealed pressurized dielectric gaseous atmosphere. The recloser has a sealed tank and a solenoid therein. The solenoid has a plunger connected through a yoke for returning vacuum contact back to a closed contacting position, a dampener for regulating the opening movement of the plunger, a dielectric gas filling the sealed chamber and permeating the solenoid and acted on by the solenoid plunger. The solenoid also has a central chamber complimentarily accepting the plunger. The central chamber of the solenoid is substantially closed at one end and permits the ingress of the dielectric gas when the plunger is moved in an outward direction within the central chamber away from the closed end and a second dampener controlling the solenoid plunger's movement toward the closed end.

Abstract: An oil dashpot and a method of producing the oil dashpot pole piece in an electromagnetic tripping apparatus from steel wire rod, wherein the steel wire rod contains phosphorus and sulfur in quantities less than 0.1 percent by weight and wherein the particle size of ferrite in a metal texture of the steel wire rod is between 7 and 8 micrometers, comprising the steps of aligning a predetermined length of steel wire rod in holding die, to form a pole piece first diameter portion and a second diameter portion.

Abstract: The electromagnetic brake comprises an electromagnet and a movable armature attracted by this electromagnet when the latter is energized and separated from the latter by spring means when the electromagnet is not energized. The electromagnet and the armature are each mounted hingeably between two pivoting arms carrying jaws intended to clamp an element to be braked. The brake comprises, moreover, a damping device offering resistance to the movements of the armature relative to the electromagnet so as to control and slow down the speed at which the brake is applied and released. The damping device is integrated inside the assembly consisting of the armature and the electromagnet.

Abstract: A relay comprises a yoke, an armature, a movable contact spring having a movable contact, at least one stationary contact mounted thereon, and a core. An air damper is mounted on a free end of the movable spring, or on a free end of the armature, to reduce sound generated by the impulsive force of the movable contact and the impulsive force of the armature.

Abstract: A lagged type solenoid capable of carrying out the plunger advancing operation at a speed lower than the plunger retreating operation. For this purpose, the solenoid includes a plunger lagging mechanism, which includes an air discharge passage for discharging air in a plunger moving space to an ambient atmosphere during the plunger advancing operation and an air supply passage for supplying air from the ambient atmosphere to the plunger moving space during the plunger retreating operation which is formed into a sectional area larger than the air discharge passage. The air supply passage is closed by a check valve during the plunger advancing operation. Thus, the plunger advancing operation takes place at a speed lower than the plunger retreating operation.

Abstract: A circuit breaker includes a tripping device in which a magnetic core is contained in a vessel of viscous fluid in a magnetic frame. An armature is disposed adjacent the core and is connected to a toggle mechanism. Under conditions of moderate overloads, the armature and the core ineract and the tripping device provides a time delay before it operates. Under severe fault conditions the armature is activated directly and the effect of the core is of less significance. The core or the armature are tapered, to provide a desired balance between the delayed and instantaneous operating characteristics.

Abstract: To slow down the action of a solenoid for use in moving delicate mechanisms, or other time-delay uses, the solenoid frame is provided with a closed end, vented only by a restricted orifice, and the solenoid plunger is fitted with a pressure seal to ensure venting of trapped air only through the restricted orifice.

Abstract: An electromagnetic sensing device comprising a coil and a member magnetically coupled to the coil. An armature is movable relative to said member upon sufficient energization of the coil. A lever is carried by the member and is movable between first and second positions in response to the movement of the armature. The armature is operatively connected to the lever to move the lever on sufficient energization of the coil, whereupon a further mechanism coupled to the lever is actuated by the lever.

Abstract: Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the delay core is elongated to extend in its normal biased position through the electrical center of the coil. An inertia wheel is mechanically coupled to the trip armature to further increase pulse tolerance so as to reduce nuisance tripping in the presence of high but very short term overcurrents.

Abstract: A solenoid switch, particularly but not exclusively for use in a starter motor supply circuit includes a solenoid coil and at least one fixed contact. An armature is movable relative to the coil in response to energisation of the coil and carries a movable contact. The movable contact is urged by resilient means to a rest position relative to the armature and a member is coupled to the armature through said resilient means for movement with the armature in a direction to engage the movable contact with the fixed contact. The switch further includes a delay unit for slowing movement of the member in the contact engaging direction, the arrangement being such that in use when the movable contact engages the fixed contact the armature moves relative to the member and the movable contact compressing said resilient means and thereby increasing the pressure between the contacts.

Abstract: An electromagnetic solenoid with a yoke defining a hollow cylinder, an electromagnetic coil wound around this cylinder for connection to a power source, a plunger inserted in the cylinder for sliding movement therein when the coil is energized and having a needle-like rod extending through the yoke bottom, the plunger and cylinder each having a confronting surface which is faced with a confronting surface of the other during the sliding movement. A plurality of spaces are formed on the confronting surface of at least either the cylinder or the plunger, and a braking substance consisting of a highly viscous liquid is applied to the confronting surfaces of the plunger and cylinder. Spring means may be operatively provided about the plunger to return the slidingly moved plunger to its original position. Upon energization of the solenoid, the downward movement speed of the plunger is limited by the braking substance.

Abstract: An immersed electromagnetic torque motor having a movable flapper is protected against the accumulation of contamination in magnetic gaps of the motor and the resulting jamming of the motor by coating the motor with a lacquer or other fluid-impermeable material and mounting the motor in a blind fluid chamber from which the flapper projects. An aperture is provided in the coating at a low flux area on the exterior of the motor to admit the immersing fluid for purposes of mechanical damping and, at the same time, to restrict the migration of fluid and contaminants toward magnetic gaps within the torque motor.

Abstract: A dashpot solenoid is provided having a thin-walled well with a support ring around an accurately sized and shaped slightly reduced mouth portion and an adjustable air metering orifice at the bottom or opposite end. A plunger coated with a polyfluoro hydrocarbon is sized and shaped to fit within the well such that the clearance between the plunger and the mouth portion of the well provide a functionally airtight sliding fit. In operation the plunger is drawn into the well and air captured therein is permitted to escape through the adjustable metering orifice at a rate which damps the plunger motion.