David Wayne Crenshaw

US Patent:

6392349, May 21, 2002

Filed:

Oct 28, 1999

Appl. No.:

09/428898

Inventors:

David B. Crenshaw - Memphis TN 38125

International Classification:

F21V 1904

US Classification:

315 86, 315150, 362276

Abstract:

A remotely controlled test system for testing the ready status of a fluorescent type emergency lighting fixture providing a 30 second or a 90 minute test of the battery operated fluorescent lamp upon command. The transmitted control signal is an infrared beam containing a selected pulse-time code which the receiving circuit can reliably receive, recognize and process in an environment of high infrared noise typically produced by fluorescent lighting. Upon recognition and verification of the selected pulse-time code, the microcontroller disenables the charging circuit to the battery for supplying power to the fluorescent lamp in the emergency mode to cause the emergency circuit to sense an AC power failure whereby the lamp illuminates in the emergency mode for the selected test period. In preferred embodiments the detector for the infrared beam, the housing in which it is mounted in the fluorescent fixture, the cable connecting the detector to the microcontroller are all surrounded with an electrically conductive shielding which is grounded to the microcontroller.

US Patent:

6710546, Mar 23, 2004

Filed:

Feb 15, 2002

Appl. No.:

10/077401

Inventors:

David B. Crenshaw - Collierville TN

Assignee:

The Bodine Company, Inc. - Collierville TN

International Classification:

H05B 3800

US Classification:

315 86, 315150, 315159, 315307, 315360, 315362

Abstract:

A remote control system for testing the ready status of lighting fixtures such as emergency exit signs and for operating such fixtures as by controlling the off/on status and dimming of the illumination in a high infrared and EMI noise environment. The transmitted control signal is an infrared beam containing a selected pulse-time code which the receiving circuit can reliably receive, recognize and process in an environment of high infrared noise typically produced by fluorescent lighting. Upon recognition and verification of the selected pulse-time code, in the ready status testing, the microcontroller disenables the charging circuit to the battery for supplying power to the exit sign in the emergency mode to cause the emergency circuit to sense an AC power failure whereby the lamp illuminates in the emergency mode for the selected test period. For the lighting fixture control, upon recognition and verification of the selected pulse-time code, the microcontroller outputs a signal to cause the lamp in the fixture to illuminate or go dark, or to change level of illumination. In preferred embodiments the detector for the infrared beam is in a grounded housing which is mounted in the lighting fixture, the cable connecting the detector to the microcontroller are all surrounded with an electrically conductive shielding which is grounded to the microcontroller.

US Patent:

6756736, Jun 29, 2004

Filed:

Oct 15, 2001

Appl. No.:

09/977450

Inventors:

David B. Crenshaw - Memphis TN 38125

International Classification:

H05B 3702

US Classification:

315 86, 315150, 362276

Abstract:

A detector assembly for a remotely controlled test system for testing the ready status of a fluorescent type emergency lighting fixture providing a 30 second or a 90 minute test of the battery operated fluorescent lamp upon command. The transmitted control signal is an infrared beam containing a selected pulse-time code which the receiving circuit can reliably receive, recognize and process in an environment of high infrared noise typically produced by fluorescent lighting. Upon recognition and verification of the selected pulse-time code, the microcontroller disenables the charging circuit to the battery for supplying power to the fluorescent lamp in the emergency mode to cause the emergency circuit to sense an AC power failure whereby the lamp illuminates in the emergency mode for the selected test period. In preferred embodiments the detector for the infrared beam, the housing in which it is mounted in the fluorescent fixture, the cable connecting the detector to the microcontroller are all surrounded with an electrically conductive shielding which is grounded to the microcontroller.

US Patent:

6828733, Dec 7, 2004

Filed:

Jul 10, 2003

Appl. No.:

10/616536

Inventors:

David B. Crenshaw - Memphis TN 38125

International Classification:

H05B 3702

US Classification:

315150, 315159, 315362

Abstract:

A remote lamp control system for controlling the off/on status and dimming of the illumination in a high infrared and EMI noise environment is disclosed. The transmitted control signal is an infrared beam containing a selected pulse-time code which the receiving circuit can reliably receive, recognize and process in an environment of high infrared noise typically produced by fluorescent lighting. For the lighting fixture control, upon recognition and verification of the selected pulse-time code, the microcontroller outputs a signal to cause the lamp in the fixture to illuminate or go dark, or to change level of illumination. In preferred embodiments the detector for the infrared beam is in a grounded housing which is mounted in the lighting fixture, the cable connecting the detector to the microcontroller are all surrounded with an electrically conductive shielding which is grounded to the microcontroller.

US Patent:

7091676, Aug 15, 2006

Filed:

Mar 15, 2002

Appl. No.:

10/471939

Inventors:

Reginald J. Rodriguez - Germantown TN, US
David B. Crenshaw - Memphis TN, US

Assignee:

The Bodine Company, Inc. - Collierville TN

International Classification:

H05B 37/00

US Classification:

315307, 361 18

Abstract:

A supplemental arc maintenance electrical supply for a high density discharge (HID) lamp (L) for applying a high frequency supplemental arc voltage to maintain the arc during a period of unstable or intermittent AC supply in addition to or in lieu of the voltage or current being supplied to the lamp by the HID ballast (). AC supply instability is identified in less time than the unstable or intermittent power will cause the lamp to arc to extingish and energize a supplemental arc maintenance electrical supply to maintain the arc of the lamp during the period of instability or interruption, so long as its internal, rechargeable battery is operational. The monitoring system () also recognizes the re-establishment of a stable (as by being a persistently repeating cycle but not necessarily a sinusoidal AC supply) repeating electrical power supply which is also of sufficient energy level to maintain operation of the HID lamp.