| Patent Number |
Title Of Patent |
Date Issued |
| RE29221 |
Acceleration sensitive motion snubber |
May 17, 1977 |
| Relative axial movement of telescopically mounted support members is converted to rotation of an inertia mass by means of a ball-screw arrangement and a capstan spring loosely surrounding a portion of one of the support members. Slow acceleration of the inertia mass is accommodated, |
| D454337 |
Photo-responsive lamp switching apparatus |
March 12, 2002 |
|
| D398902 |
Fluorescent light adapter |
September 29, 1998 |
|
| D385980 |
Light housing |
November 4, 1997 |
|
| D382539 |
Motor control housing |
August 19, 1997 |
|
| D379174 |
Motor control housing |
May 13, 1997 |
|
| D372992 |
Fluorescent lamp |
August 20, 1996 |
|
| D327455 |
Buckle |
June 30, 1992 |
|
| 6455960 |
Direct drive roller motor |
September 24, 2002 |
| A direct drive roller motor for use in a belt drive system includes a brushless DC motor that has an external rotor that functions as a direct drive roller. The motor has stator coils mounted on a stator shaft that is physically and thermally coupled at both ends thereof to a support |
| 6057613 |
Hybrid stepper motor having optimized torque density |
May 2, 2000 |
| A hybrid stepper motor having optimized torque per unit volume or "torque density" comprises a stator having an outer diameter and an inner diameter, and a rotor rotatably position within the stator inner diameter and being drivably coupled to a shaft. The rotor is of the permanent m |
| 6053256 |
Fire extinguishing system |
April 25, 2000 |
| A method for extinguishing fires in aircraft cargo spaces includes two pressure chambers separated by an annular boss which houses a restricting orifice and a check valve assembly. A lower chamber acts as a high rate discharge fire extinguisher and the upper chamber acts as a metering fi |
| 6020661 |
Injection molded motor assembly |
February 1, 2000 |
| An electrical motor and the process for forming that motor utilizes injection molding techniques to unitize the stator assembly. The stator assembly includes a stator lamination stack and preferably a metal front end cap which is secured to the lamination stack after the lamination s |
| 5982111 |
Fluorescent lamp ballast having a resonant output stage using a split resonating inductor |
November 9, 1999 |
| An improved ballast circuit for use with a compact fluorescent lamp includes an EMI filter, a rectifier and a voltage amplification stage, an active resonant circuit, a dimming circuit, and a power factor correction stage which is connected in parallel to a lamp load. In one embodiment, |
| 5961204 |
Fluorescent lamp with globe activated dimmer switch |
October 5, 1999 |
| A compact dimmable fluorescent lamp includes a dimming control ballast within a base which installs directly on an existing incandescent or other lighting fixture. The lamp mounts a fluorescent illumination element and includes an accessible dimmer control member connected to the dimming |
| 5955841 |
Ballast circuit for fluorescent lamp |
September 21, 1999 |
| An improved ballast circuit for use with a compact fluorescent lamp includes an EMI filter, a rectifier and voltage amplification stage, an active resonant circuit and power factor correction stage which is connected in parallel to a lamp load. The ballast circuit includes a feedback |
| 5940259 |
Voltage surge protector for electronic circuits with semiconductor components |
August 17, 1999 |
| A surge protection circuit provides multiple stages of protection for an electronic circuit having semiconductor components from damage due to passage of excessive amount of current during a line borne voltage surge. In particular, this circuit can protect any relay load switching device |
| 5929549 |
Fault tolerant electric machine |
July 27, 1999 |
| An electric machine, such as a motor or a generator, comprises a stator having a plurality of stator poles defining a plurality of slots, a rotor positioned within the stator, and at least a two sets of stator windings wound on the stator poles and occupying said stator slots such that t |
| 5925986 |
Method and apparatus for controlling power delivered to a fluorescent lamp |
July 20, 1999 |
| An improved ballast circuit for controlling the power delivered to a fluorescent lamp. The present invention uses a complex resonating circuit to dynamically adjust the power being delivered to the load. The present invention also operates in burst mode allowing an increased voltage to b |
| 5866993 |
Three-way dimming ballast circuit with passive power factor correction |
February 2, 1999 |
| An improved ballast circuit controls the power delivered to a three-way dimmable fluorescent lamp for use in European countries and elsewhere where the input voltage is on the order of 220 volts. The ballast circuit comprises passive power factor correction to increase the overall power |
| 5798617 |
Magnetic feedback ballast circuit for fluorescent lamp |
August 25, 1998 |
| An improved ballast circuit for use with a fluorescent lamp includes an EMI filter, a feedback network, a rectifier and voltage amplification stage, and an active resonant circuit which connects to the lamp load. The ballast circuit includes a magnetic feedback path which couples the |
| 5798596 |
Permanent magnet motor with enhanced inductance |
August 25, 1998 |
| A permanent magnet motor with enhanced inductance which comprises a motor frame having annular inner walls defining a void therein and a stator mounted on and extending around the periphery of the inner walls of the frame in the void in the motor frame. The stator includes windings p |
| 5759054 |
Locking, wire-in fluorescent light adapter |
June 2, 1998 |
| An improved fluorescent light adapter for incandescent light fixtures. The adapter may be directly wired in to the Edison light fixture, and also includes locking structure to prevent theft. Specifically, the adapter includes a lower housing with a plurality of channels, some of which |
| 5744913 |
Fluorescent lamp apparatus with integral dimming control |
April 28, 1998 |
| Dimmable fluorescent lamp apparatus includes a dimming control element housed in an integral adapter having a base which installs directly on an existing incandescent or other lighting fixture. The adapter mounts a fluorescent illumination element either fixedly or removably and repl |
| 5691606 |
Ballast circuit for fluorescent lamp |
November 25, 1997 |
| An improved ballast circuit for use with a compact fluorescent lamp includes an EMI filter, a rectifier and voltage amplification stage, an active resonant circuit and power factor correction stage which is connected in parallel to a lamp load. The ballast circuit includes a feedback |
| 5686799 |
Ballast circuit for compact fluorescent lamp |
November 11, 1997 |
| A compact dimmable fluorescent lamp apparatus that connects with at least one fluorescent lamp and with an input power source that supplies an AC input voltage. The lamp includes a rectification stage for rectifying the AC input voltage, a dimming stage for generating a dimming signal |
| 5670864 |
Adaptive automatic power capacitor for controlling controller a capacitor bank of a power distri |
September 23, 1997 |
| A power capacitor controller that adaptively and/or automatically determines a variety of operational parameters, including adaptively and automatically establishing the line phase angle correction value; adaptively and automatically establishing the appropriate electrical levels det |
| 5648726 |
Remotely accessible electrical fault detection |
July 15, 1997 |
| The invention relates to a remotely accessible electrical fault detection system. According to one preferred embodiment, the system includes a weather-resistant housing having a mount adapted for mating to an aperture in an outer wall of a utility cabinet containing an electrical network |
| 5596247 |
Compact dimmable fluorescent lamps with central dimming ring |
January 21, 1997 |
| A compact dimmable fluorescent lamp includes a dimming control ballast within a base which installs directly on an existing incandescent or other lighting fixture. The lamp mounts a fluorescent illumination element and includes an accessible dimmer control member connected to the dimming |
| 5537301 |
Fluorescent lamp heat-dissipating apparatus |
July 16, 1996 |
| A fluorescent lamp dissipates heat from the lamp tube to a vented air stream within a lamp globe and to ambient air outside of the lamp. The lamp apparatus includes a base that mounts and provides electric current to a fluorescent illumination tube, a vented lamp globe and a thermally |
| 5501113 |
Particle measuring system with sonically measured flow rate |
March 26, 1996 |
| In a particle measuring system, a burette is provided to enable the rate of flow to a particle sensor of the particle measuring system to be continuously monitored and controlled. The burette has a central chamber and an outer chamber from which the central chamber can overflow. The |
| 5434475 |
Light relay with adjustable core and contact gap |
July 18, 1995 |
| An outdoor lighting control includes a photosensor responsive to ambient outdoor light and an alternating current relay with a pair of contacts movable between make and break positions. The relay includes a contact actuating arrangement that responds to the photosensor and alternating |
| 5410403 |
Particle measuring system with pump adapted to maintain constant flow for different pressures an |
April 25, 1995 |
| In a particle measuring instrument for measuring particles entrained in liquids, a gear pump located downstream from the flow cell of the particle measuring instrument is used to maintain a constant rate of flow through the flow cell. When the source of liquid is at a high pressure, a pr |
| 5372328 |
Restraint belt retractor |
December 13, 1994 |
| A shaft on which a restraint belt is wound is rotatably mounted in the side walls of a U-shaped frame. A plastic belt guide is connected by side arm belt edge protectors to tubular flanges that form bushings for the shaft. A driving hub mounted on the shaft drives a locking hub through a |
| 5371585 |
Particle detecting instrument with sapphire detecting cell defining a rectangular flow path |
December 6, 1994 |
| In a particle detecting instrument, a sapphire detecting cell is provided with a square flow path. The sapphire cell is assembled from four sapphire pieces which extend throughout the length of the cell. The cell has a central section containing the square flow path with planar exterior |
| 5332512 |
Isokinetic diluter for particle measuring instrument |
July 26, 1994 |
| A particle measuring and counting system employs an isokinetic diluter comprising a gas filter having a capillary tube extending through the middle of the filter. The capillary tube and filter are arranged to divide a stream entering the filter into an outer substream from which entraine |
| 5325023 |
Outdoor lighting control apparatus |
June 28, 1994 |
| An outdoor lighting control circuit for operation with a variable input voltage and with an electrical lamp, the circuit including a first resistive impedance element for protecting the circuit from excessive current, and a photosensitive element for presenting a first impedance when |
| 5316339 |
Safety belt gripping mechanism |
May 31, 1994 |
| A belt gripping mechanism distanced from a belt payout reel including a support housing, a clamping assembly and a locking assembly, which functions in response to a predetermined load to grip a restraint belt in an effectively permanent manner so as to not be immediately releasable |
| 5312066 |
Restraint belt retractor |
May 17, 1994 |
| A shaft on which a restraint belt is wound is rotatably mounted in the side walls of a U-shaped frame. A driving hub mounted on the shaft drives a locking hub through a clutch formed of ball bearings mounted in recesses in the faces of the hubs. Belt payout rotation of the shaft at a |
| 5305175 |
Faulted current indicator with protection against temporary overloads and transients |
April 19, 1994 |
| The disclosed faulted current indicator ignores temporary overloads and transients by inhibiting any trip resulting from an overcurrent signal until a disabling circuit senses that a fuse or circuit breaker has reduced the line current to zero. |
| 5298967 |
Measurement of concentrations of dissolved solvent |
March 29, 1994 |
| In a system for measuring minute concentrations of dissolved solids in liquids, seed particles of a known diameter are mixed with the liquid and the mixture of the seed particles and the liquid is atomized into droplets of a known size. The droplets are dried to residue particles compris |
| 5255148 |
Autoranging faulted circuit indicator |
October 19, 1993 |
| The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and trips when the current exceeds a predetermined multiple above the average value of the current. A trip circuit senses the average value by periodic current sampling or by contin |
| 5241444 |
Adaptive trip fault current indicator |
August 31, 1993 |
| The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and arms a trip arrangement in response to current rising a predetermined amount with respect to time. If the rising current also opens a circuit breaker within a predetermined time and |
| 5162798 |
Resolver to digital converter |
November 10, 1992 |
| An apparatus, preferably in the form of a resolver to digital converter for converting the amplitude modulated, encoded signals into digital signals representative of the velocity and position is described. The apparatus is of the type that includes an electronic control transformer circ |
| 5132596 |
Outdoor lighting controls |
July 21, 1992 |
| An outdoor lighting control includes a photosensor responsive to ambient outdoor light and an alternating current relay with a pair of contacts movable between make and break positions. The relay includes a contact actuating arrangement that responds to the photosensor and alternating |
| 5123147 |
Restraint harness buckle assembly and method of making |
June 23, 1992 |
| A cover which fits over a restrain harness buckle assembly. The cover slides down over the buckle and confines the ends of cam support pins in the assembly, eliminating the need for the use of pins with heads on one end, for fasteners to hold such pins in place, and the need for machinin |
| 5107440 |
Electrical load management with autogenically transmitted status data |
April 21, 1992 |
| To allow a tester to test whether a switching arrangement near a customer's premises has connected and reconnected loads according to load management command signals from a central utility transmitter, a switch autogenically transmits, over and over, status signals indicating the status |
| 5092675 |
Vacuum line particle detector with slab laser |
March 3, 1992 |
| A particle sensing cell designed to detect the size of particles in a vacuum line for semiconductor processing equipment, a YAG plate is placed adjacent to the vacuum line conduit to define an external laser cavity extending across the conduit between an end face of the YAG plate and a |
| 5061065 |
Particle contamination detection in fluids through the external section of a laser |
October 29, 1991 |
| In a particle detecting instrument, a particle detecting cell comprises a laser plasma tube in combination with a glass prism through which a fluid channel is defined. The glass prism abuts the transmitting end of the laser plasma tube and the end wall of the prism is arranged at the |
| 5059953 |
Infrared overheat and fire detection system |
October 22, 1991 |
| A system for detecting an overheat condition in aircraft preferably includes two control units each connected to eight thermal imaging modules. The thermal imaging modules monitor the cargo by for an overheat condition and if any module detects an overheat condition, the control unit |
| 5056739 |
Safety harness device |
October 15, 1991 |
| A safety harness device of the inertia type wherein the rewind spring is connected to a fluid pressure actuated portion that is normally inoperative during ordinary operations of the safety harness, but which, when actuated by the user, serves to pull upon the rewind spring to rapidl |
