| Patent Number |
Title Of Patent |
Date Issued |
| RE34212 |
Upper body exercise apparatus |
April 6, 1993 |
| An upper body exercise apparatus to assist an exerciser to do chin-ups and dips. The apparatus includes a frame having a base, a platform parallel to the base for the exerciser to stand on, chin-up handles and dip handles extending from the frame, a system to oscillate the platform verti |
| D482707 |
Linear actuator shaft |
November 25, 2003 |
|
| 6756705 |
Linear stepper motor |
June 29, 2004 |
| In a preferred embodiment, linear stepper motor, comprising; an annular stator structure; an axially extending, cylindrical, permanent magnet shaft extending coaxially through said annular stator structure; and the axially extending, cylindrical, permanent magnet shaft having a smooth |
| 6603229 |
Linear actuator with threaded captivation sleeve, captive lead screw, and spring pre-load adjust |
August 5, 2003 |
| In a preferred embodiment, a linear actuator, including: front and rear end bells; a stator structure; a rotor structure having first and second bearings journaled, respectively, in cavities formed in inner surfaces of the front and rear end bells; a captivation sleeve having its proxima |
| 6531798 |
Linear/rotary motor and method of use |
March 11, 2003 |
| In a preferred embodiment, a linear/rotary motor, including: first and second stator structures, having magnetically coupled thereto, respectively, first and second rotors; a first, externally threaded shaft fixedly attached to the first rotor and extending axially therefrom, such th |
| 6362547 |
Linear/rotary motor and method of use |
March 26, 2002 |
| In a preferred embodiment, a linear/rotary motor, including: a housing; an output shaft extending from the housing; a rotary motor disposed within the housing, the output shaft being given rotational motion by the rotary motor; a linear motor disposed within the housing; a linear shaft a |
| 6222294 |
Combinations of solenoids and motors |
April 24, 2001 |
| In a preferred embodiment, an actuator, including: a shaft (34); a solenoid (24), having a coil (40) and a core (42), disposed at a first selected position on the shaft, with the core being fixedly attached to the shaft such that energization of the coil will cause the shaft to move axia |
| 6211591 |
Linear/rotary electromagnetic device |
April 3, 2001 |
| In a preferred embodiment, a linear/rotary electromagnetic device, including: a housing (20); first and second stators (22 and 40) disposed in the housing, first and second rotors (24/26 and 42/44) disposed in the housing and magnetically interacting, respectively, with the first and |
| 6150789 |
Stepper motor control |
November 21, 2000 |
| In a preferred embodiment, a stepper motor control, including: a driver to drive the stepper rotor; a detector to detect a commanded step rate signal provided to the driver and to provide an output signal proportional thereto; a power control, responsive to the output signal, to provide |
| 6146280 |
Spring biased universal joint |
November 14, 2000 |
| A flexible joint for first and second rotating members, including: a hub fixedly connected to a proximal end of the first rotating member at a first end of the hub; the hub being constructed for the insertion in a second, opposite end of the hub of a proximal end of the second rotating |
| 6121561 |
Hermetically sealed electrical switch |
September 19, 2000 |
| In a preferred embodiment, a hermetically sealed electrical switch, including: a housing; a bellows having a closed end and an open end, with the open end sealingly attached to the housing such that a first volume defined by interior surfaces of the housing and exterior surfaces of the |
| 5910192 |
Low-cost linear positioning device |
June 8, 1999 |
| In a preferred embodiment, a linear positioning device, including: a frame member; an electric motor disposed to selectively move axially back and forth in the frame member; carriage apparatus attached to the electric motor; and apparatus to guide the motor in axial movement and to preve |
| 5798592 |
Simplified electric motor construction |
August 25, 1998 |
| In a preferred embodiment, in an electric motor of the type including a cup-shaped housing and a housing mounting plate, the improvement comprising: providing said cup-shaped housing and said housing mounting plate as a monolithic part. In another embodiment, an electric motor, inclu |
| 5611508 |
Horizontally adjustable microphone support |
March 18, 1997 |
| A horizontally adjustable microphone support, including: a vertical support; a generally horizontal cross member attached to the vertical support; a microphone and a counterweight attached to the horizontal cross member on opposite sides of the vertical support; and apparatus to simu |
| 5465020 |
Integral shaft bearing and bobbin for electric motors |
November 7, 1995 |
| In a preferred embodiment, in an electric motor of the type having a housing, a non-metallic bobbin upon which is wound a stator coil, a rotor having a rotor shaft fixedly attached thereto and extending therefrom, the rotor being disposed for rotation axially centrally of the bobbin, the |
| 5126605 |
Oscillating stepper motor |
June 30, 1992 |
| In a preferred embodiment, an oscillating stepping motor having only one stator phase. What would otherwise be a second stator phase is a magnet fixedly disposed with respect to the rotor to produce a detent position of the rotor. When the stator is energized, the field of the fixed magn |
| 4985669 |
Motor feedback system |
January 15, 1991 |
| A multi-phase stepper motor in which one or more salient sensor poles and corresponding pick-up windings are employed to sense the actual position of the rotor. The rotor is of annular configuration and includes a first set of nonsalient rotor poles around its outer periphery and a secon |
| 4884333 |
Method of making a stepper motor |
December 5, 1989 |
| A multi-phase stepper motor having an annular permanent magnetic rotor and a plurality of matingly engageable stator phase assemblies around the rotor. Each of the phase assemblies comprises a pair of annular pole pieces including interleaved salient stator poles. The stator pole pieces |
| 4846458 |
Upper body exercise apparatus |
July 11, 1989 |
| An upper body exercise apparatus to assist an exerciser to do chin-ups and dips. The apparatus includes a frame having a base, a platform parallel to the base for the exerciser to stand on, chin-up handles and dip handles extending from the frame, a system to oscillate the platform verti |
| 4841189 |
Stepper motor and method of making the same |
June 20, 1989 |
| A multi-phase stepper motor having an annular permanent magnetic rotor and a plurality of matingly engageable stator phase assemblies around the rotor. Each of the phase assemblies comprises a pair of annular pole pieces including interleaved salient stator poles. The stator pole pieces |
| 4714853 |
Low profile electric motor |
December 22, 1987 |
| An electric motor has an annular permanent magnetic rotor having rotor poles of alternating polarity around its circumference. The motor has an outer stator disposed concentrically around the outer periphery of the rotor which has an annular configuration and a plurality of axially e |
| 4687195 |
Treadmill exerciser |
August 18, 1987 |
| A treadmill exerciser involving an upwardly and rearwardly sloping treadmill having a plurality of steps which are activated by the weight of a person "walking" up them. The tread portion and the riser portion of each step are connected at both ends by hinges to each other and to end |
| 4482792 |
Sealed toggle switch |
November 13, 1984 |
| A sealed toggle switch is formed of a hollow thermosetting plastic base, a metal cover closing off the base, a rocking blade, and a bat actuator handle having a ball disposed to rotate in a socket bushing in the cover and a resiliently biased finger pushing against the blade to rock it f |
| 4434330 |
High temperature switch |
February 28, 1984 |
| A environmentally sealed snap action switch mechanism suitable for use in high temperature (900.degree. F.+) environments comprises a casing having a flex area formed on one surface so as to be susceptible to snap-action movement. A switch is situated inside the casing. An inner actuator |
| 4404484 |
Electric rotating machine |
September 13, 1983 |
| A self-starting unidirectional rotating machine, suitable for use as a stepping motor, has a permanent magnet rotor and a pair of finger-like pole pieces extending axially alongside the rotor. These pole pieces are disposed asymmetrically so that, for example, the center of one pole piec |
| 4381437 |
Switching device |
April 26, 1983 |
| A rotary switch comprises a control shaft rotatable clockwise from a neutral position to a first switch actuating position and beyond it to an overtravel position, and counter-clockwise to a second switch actuating position and beyond it to another overtravel position; a centering ar |
| 4274026 |
Electric rotating machine |
June 16, 1981 |
| A small electric motor including one or more field coils which cooperate with a long, thin cylindrical rotor having only a single pair of nonsalient rotor poles. A stator pole piece assembly is in magnetic flux relationship with the rotor and is provided with salient stator poles whi |
| 4244099 |
Method of making an electric rotating machine |
January 13, 1981 |
| An electric motor and method of making the motor, in which a unitary one-piece cylindrical housing is molded of nonmagnetic material with an H-shaped axial cross-section to provide cylindrical recesses in opposite ends of the housing. A gear train is inserted in one of these recesses, |
| 4241270 |
Synchronous electric motor |
December 23, 1980 |
| A small two-phase motor having first and second field coils which each cooperate with a long, thin cylindrical rotor. The rotor is provided with only a single pair of nonsalient rotor poles and has a length to diameter ratio which advantageously is at least about 2.5. A stator pole piece |
| 4087709 |
Electric rotating machine |
May 2, 1978 |
| An electric motor or other electric rotating machine in which certain of the stator poles are of hardened magnetic material to provide the machine with a unidirectional self-starting characteristic. In certain preferred embodiments the housing for the motor is of nonconductive material, |
| 4040247 |
Clock drive apparatus |
August 9, 1977 |
| Apparatus for driving a timing device from an external AC power source and, in the event that the AC power source fails, from an auxiliary DC source. The driving apparatus includes a pulse producing circuit which produces periodic pulses in response to timing pulses. A timing pulse circu |
| 4004168 |
Electric rotating machine |
January 18, 1977 |
| A self-starting unidirectional electric motor in which a pair of auxiliary stator pole members are angularly spaced from the main stator poles and are provided with a magnetic return path having a reluctance which is less than the reluctance of the return path for the main stator poles. |
| 3959628 |
Electrical read-out apparatus |
May 25, 1976 |
| A watt-hour meter or other visual read-out apparatus which may also be read electrically through the use of a plurality of code discs and a photoelectric sensing device in spaced juxtaposition with the back sides of the discs. The sensing device is supported by a cable-controlled car |
