William K Erwin

US Patent:

56421044, Jun 24, 1997

Filed:

Sep 26, 1991

Appl. No.:

7/765596

Inventors:

William Randall Erwin - Rowlett TX

Assignee:

The Genlyte Group Incorporated - Secaucus NJ

International Classification:

G08C 1900

US Classification:

34082572

Abstract:

An automatic lighting controller applies a turn-off control signal to a gate controlled power switch for switching OFF lighting when a timer circuit determines that motion activity above a threshold level has not occurred within the controlled area during a prescribed interval. A counter produces a grace period count signal and a reset count signal, with the grace period count signal occurring within a predetermined sub-interval, for example, one count cycle prior to the reset count signal. The grace period count cycle (N-1) interval is adjustable, for example, from about 0. 6 second (for test purposes) to about 14 seconds. The grace period count signal enables an audio transducer which provides an audible alert that the lights are about to be switched OFF automatically. A person in the controlled area can override the impending automatic shutoff simply by initiating some motion activity during the grace period.

US Patent:

43230440, Apr 6, 1982

Filed:

Aug 11, 1980

Appl. No.:

6/177204

Inventors:

William L. Erwin - Irving TX
Addison B. Chamness - Dallas TX

International Classification:

F02M 3100

US Classification:

123557

Abstract:

A fuel charging device includes a housing having two transverse bores, one defining a mixing chamber and one defining a vaporizing chamber. A section of exhaust bypass conduit passes through the vaporizing chamber bore to provide an annular chamber. A plurality of fuel flow channels consist essentially of transverse bores intersecting the vaporizing chamber and mixing chamber bores. These fuel flow channels include a valve chamber, a feed chamber communicating the valve chamber and the vaporizing chamber, and passages communicating the vaporizing chamber and the mixing chamber. Metering valves include valve orifices disposed between the valve chamber and the feed chamber, and needle valves at the end of valve actuator stems which extend through the valve chamber and beyond the housing. Liquid fuel inlet passages communicate with the valve chambers. The valves are reciprocated by a bell crank assembly and associated linkage, with adjustments to vary the positions of the needle valves relative to the valve orifices.

US Patent:

51948583, Mar 16, 1993

Filed:

Aug 29, 1991

Appl. No.:

7/752004

Inventors:

William R. Erwin - Rowlett TX

Assignee:

The Genlyte Group Incorporated - Secaucus NJ

International Classification:

G08C 1912
H01H 4700
H05B 3702

US Classification:

3408257

Abstract:

A lighting load can be turned on/off manually from one or more remote switching stations as well as from a master switch controller station, with ON/OFF control signals produced at the remote switching stations being transmitted to the master controller circuit on the traveler conductor of a conventional single phase AC power distribution system. The main controller has an internal dual mode DC power supply which is referenced to load potential. The dual mode power supply derives operating power from the voltage across the gate controlled power switch which corresponds with essentially hot potential when the power switch is off. The voltage drop across the power switch is boosted by a step-up transformer when the power switch is on. Remote turn-on and turn-off signals are derived independently from the hot power conductor and ground safety power conductor, respectively. Remote turn-on and turn-off of the master power switch is accomplished without interfering with automatic turn-off operation of the controller.