| Patent Number |
Title Of Patent |
Date Issued |
| RE31813 |
Print wire solenoid |
January 22, 1985 |
| A high speed axial-type printing solenoid includes a rebound and energy absorbing arrangement which employs a block of energy-absorbing "dead" elastomeric material held in a partially compressed state by an impact plate. The impact plate is mounted to engage and position the plunger or |
| 4812884 |
Three-dimensional double air gap high speed solenoid |
March 14, 1989 |
| Disclosed is a solenoid having a central and a peripheral air gap between the armature and the pole piece. The energizating coil is located in the space between the central core and the peripheral portions of the pole piece and armature. In one embodiment, an output shaft is received in |
| 4660010 |
Rotary latching solenoid |
April 21, 1987 |
| A rotary latching solenoid of the type in which a permanent magnet causes a flux flow path to be formed between opposing pole faces of an armature and a base in order to hold the armature in an energized or latched position is improved by providing the pole faces of the armature and base |
| 4470030 |
Trip solenoid |
September 4, 1984 |
| Trip solenoids are disclosed in which a permanent magnet is positioned exteriorly of the armature case. In one version, a rotary solenoid has a permanent magnet between a ball race plate and the case and has a magnetic force sufficient to hold the rotary solenoid in its actuated position |
| 4442418 |
Trip solenoid |
April 10, 1984 |
| An electric trip solenoid employs a pair of low-cost retaining or holding magnets in an open frame arrangement in which the magnets are positioned on opposite sides of the flat surfaces of a pole and in contact with the pole and the legs of an open frame. The magnets are thickness orient |
| 4309582 |
Push button switch for a controller |
January 5, 1982 |
| In a controller of the type having a body, a pivot member within the body and an actuator shaft on the pivot member, a push button switch for the controller includes a handle fitted over an external end of the shaft and having a longitudinal opening therethrough, a push rod slidably posi |
| 4306208 |
Joy-stick controller |
December 15, 1981 |
| Mechanical lever controllers, also known as joy-stick type actuators, include a body within which is mounted a rod or lever for pivotal movement. The position of the rod is transmitted by an intermediate coupling or follower member to a differential transformer of the linear voltage |
| 4306206 |
Linear solenoid device |
December 15, 1981 |
| A linear solenoid device includes a stator defining a cylindrical stator opening, and a pair of axially spaced cylindrical stator pole surfaces. An armature is mounted within the stator opening for movement parallel to the stator pole surfaces. The armature defines a pair of armature pol |
| 4282501 |
Bi-directional linear actuator |
August 4, 1981 |
| An electromagnetic device includes a stator having first and second closed flux-carrying paths defined by first and second cores, each having a plurality of concentric cylindrical pole surfaces and each defining an air gap opening between the outermost of the pole surfaces and the second |
| 4272748 |
Print wire solenoid |
June 9, 1981 |
| A high speed axial-type printing solenoid includes a rebound and energy absorbing arrangement which employs a block of energy-absorbing "dead" elastomeric material held in a partially compressed state by an impact plate. The impact plate is mounted to engage and position the plunger or |
| 4235114 |
Material testing device |
November 25, 1980 |
| A testing device for applying a force to a material test sample includes a test fixture for engaging the test sample and a solenoid, operatively coupled to the test fixture, for applying a predetermined force to the test sample in response to a solenoid control signal. A strain gauge is |
| 4217567 |
Tubular solenoid |
August 12, 1980 |
| Low cost tubular solenoids are formed with a drawn case in which the pole portion forming the base of the solenoid is defined as an integral inwardly extending part of the case. A coil bobbin is formed by the injection molding of plastic material and is provided with an integral wall |
| 4200401 |
Print wire solenoid |
April 29, 1980 |
| A print wire solenoid for high-speed operation is made with two major components or subassemblies. The first is a plastic injected unitary bobbin or stator assembly which incorporates a core ring and a core, and a stator which forms a bobbin for receiving an electric coil. The parts in |
| 4157521 |
Rotary solenoid |
June 5, 1979 |
| A rotary solenoid has a substantially constant clearance air gap, adapted to proportional operation, includes a generally cup-shaped case of ferromagnetic material, an energizing coil is received in the case adjacent, an annular stator member is received in the open end of said case |
| 4153890 |
Coil compressed solenoids subassembly |
May 8, 1979 |
| Wet and dry plunger solenoids are formed with a three-piece spool assembly including a base and a hub joined by a non-magnetic sleeve. An electric coil is wound directly onto the sleeve to compress the sleeve about the telescopically interfitted base and hub parts to form a fluid-tight j |
| 4135150 |
Decoder circuit for detecting sequentially presented code digit signals |
January 16, 1979 |
| A decoder circuit for receiving a sequence of coded digit signals and detecting when a preselected digit signal sequence is received includes a converter having a plurality of converter outputs which are energized in response to receipt of each of the coded digit signals. A plurality of |
| 4097833 |
Electromagnetic actuator |
June 27, 1978 |
| An electromagnetic device includes a stator having a first closed flux carrying path including a core and an air gap opening in the core. Flux is generated in the flux carrying path by a coil, with the direction of flux flow across the air gap being perpendicular to pole surfaces definin |
| 4044324 |
Coil compressed plunger cavity components for a wet type solenoid |
August 23, 1977 |
| A wet plunger solenoid is formed with a three-piece spool assembly including a base and a hub joined by a nonmagnetic sleeve. An electric coil is wound directly onto the sleeve to compress the sleeve about the telescopically interfitted base and hub parts to form a fluid-tight joint, |
| 3970981 |
Electric solenoid structure |
July 20, 1976 |
| A solenoid includes a base formed with an external taper and an adjacent hub sleeve also formed with an external taper, the base and hub being joined by an alignment piece of non-magnetic material formed with a pair of internal tapers which are proportioned to mate with the external tape |
