Karl W Schweickardt

US Patent:

46773487, Jun 30, 1987

Filed:

Apr 29, 1985

Appl. No.:

6/728704

Inventors:

Karl W. Schweickardt - San Antonio TX

Assignee:

Starter Systems, Inc. - Tempe AZ

International Classification:

H05B 3703
H05B 4100

US Classification:

315307

Abstract:

A circuit for the efficient generation of high voltage pulses for the initiation of conduction in gaseous discharge lamps, the effective suppression of potentially harmful voltage surges resulting from derangement of one or more electrical, current-carrying mechanical, or mechanical components within the overall gaseous discharge lighting apparatus, and reduction of radio frequency interference resulting from the normal and deranged operation of the overall gaseous discharge lighting apparatus. The ignitor/suppressor includes a semiconductor switching device, a capacitor of special characteristics, a transformer of special construction, and a resistor for the generation of high voltage pulses. The ignitor/suppressor also includes a semiconductor switching device, a capacitor of special characteristics, and a resistor for the effective suppression of abnormally high voltages. The circuit configuration of the ignitor/suppressor eliminates any corona-discharge induced insulation damage within the ballasting apparatus normally employed with gaseous discharge lamps.

US Patent:

42691940, May 26, 1981

Filed:

May 17, 1979

Appl. No.:

6/040056

Inventors:

Robert L. Rayburn - San Antonio TX
Robert L. Watson - San Antonio TX
Charles R. Elbel - San Antonio TX
Karl W. Schweickardt - San Antonio TX

International Classification:

A61B 508

US Classification:

128719

Abstract:

A method of determining arterial carbon dioxide tension from mixed expired gases of a patient utilizing a partial rebreathing anesthesia circuit. An electrode is inserted into expired gases of a patient to measure expired carbon dioxide tension. An output signal from the electrode, which indicates expired carbon dioxide tension, has a very high impedance. By reducing the impedance of the output signal, a more usable signal is obtained. Also, the signal must be converted to a relatively linear function, which is then scaled to give a visual indication proportionate to the arterial carbon dioxide tension. The electrode is pre-calibrated by gases having known percentages of carbon dioxide. The scaling factor is included to compensate for differences between the expired carbon dioxide tension and arterial carbon dioxide tension.

US Patent:

63267330, Dec 4, 2001

Filed:

Feb 1, 2001

Appl. No.:

9/775122

Inventors:

Karl Schweickardt - San Antonio TX

Assignee:

Starter Systems, Inc. - Caliente CA

International Classification:

H05B 3700

US Classification:

315119

Abstract:

An electronic circuit is shown to initiate and sustain conduction in a gaseous discharge light. A breakover device and snubber network, isolation network, and self-adjusting symmetrical high voltage pulse generator are incorporated into a standard gaseous discharge light assembly typically composed of a power source, gaseous discharge lamp ballast apparatus, and gaseous discharge lamp. The electronic circuit is used (1) for initiating and sustaining conduction of electrical current through gaseous discharge lamps, (2) to provide active suppression of transient voltages both within and external to the gaseous discharge lighting apparatus, and (3) to provide significant attenuation of the propagation of undesirable conducted and radiated radio frequency interference from the gaseous discharge lamp and the overall associated ballast apparatus.