William G Fredrick

US Patent:

48736180, Oct 10, 1989

Filed:

Dec 3, 1987

Appl. No.:

7/128149

Inventors:

William Fredrick - Valencia CA
Robert Brent - Saugus CA
Peter Baldwin - Costa Mesa CA

Assignee:

Camera Platforms International, Inc. - Valencia CA

International Classification:

H02M 3335

US Classification:

363 17

Abstract:

A power supply for an arc lamp. It includes a DC to DC converter which has an input, an output, and a circuit for increasing the voltage received at the input and for supplying the increased voltage to its output. A current sensing circuit is provided for controlling the amount of current delivered to the output. The power supply is capable of quickly igniting and re-igniting arc lamps, is relatively inexpensive to manufacture and is relatively light in weight. The power supply can accept either an AC or DC source over a wide voltage range and increases or decreases the input voltage compared to the output voltage.

US Patent:

48736163, Oct 10, 1989

Filed:

May 21, 1987

Appl. No.:

7/053271

Inventors:

William Fredrick - Valencia CA
Robert Brent - Saugus CA
Peter Baldwin - Costa Mesa CA

Assignee:

Camera Platforms International, Inc. - Valencia CA

International Classification:

H02M 3335

US Classification:

363 17

Abstract:

A power supply for an arc lamp. It includes a DC converter which has an input, an output, and a circuit for increasing the voltage received at the input and for supplying the increased voltage to its output. A current sensing circuit is provided for controlling the amount of current delivered to the output. An output "H" bridge is coupled to the output of the DC converter for generating a squarewave in response thereto. The power supply is capable of quickly igniting and re-igniting arc lamps, is relatively inexpensive to manufacture and is relatively light in weight. The power supply can accept either an AC or DC source over a wide voltage range and increases or decreases the input voltage compared to the output voltage.

US Patent:

D2544245, Mar 11, 1980

Filed:

Aug 22, 1977

Appl. No.:

5/826320

Inventors:

William H. Fredrick - North Hollywood CA

International Classification:

D0904

US Classification:

D 9246

US Patent:

48736171, Oct 10, 1989

Filed:

Aug 10, 1987

Appl. No.:

7/085015

Inventors:

William Fredrick - Valencia CA
Robert Brent - Saugus CA
Peter Baldwain - Costa Mesa CA

Assignee:

Camera Platforms International, Inc. - Valencia CA

International Classification:

H02M 3335

US Classification:

363 17

Abstract:

A power supply for an arc lamp. It includes a DC converter which has an input, an output, and a circuit for increasing the voltage received at the input and for supplying the increased voltage to its output. A current sensing circuit is provided for controlling the amount of current delivered to the output. An output "H" bridge is coupled to the output of the DC converter for generating a squarewave in response thereto. The power supply is capable of quickly igniting and re-igniting arc lamps, is relatively inexpensive to manufacture and it relatively light in weight. The power supply can accept either an AC or DC source over a wide voltage range and increases or decreases the input voltage compared to the output voltage.

US Patent:

41321804, Jan 2, 1979

Filed:

Jul 22, 1977

Appl. No.:

5/817995

Inventors:

William L. Fredrick - Chatsworth CA

International Classification:

F23C 512
F23M 900

US Classification:

110244

Abstract:

Apparatus and methods are provided for reducing solid combustible particles by heat and abrasion to a condition in which they can be burned completely and without the production of objectionable solid particulates in the exhaust gases. Solid combustible particles are carried into an outer chamber of the device by a low pressure transport air stream, with additional air at high pressure and high velocity being introduced into the same chamber in a relation driving the solid particles rapidly and circularly within the outer chamber and about an inner chamber of the device. Impingement of the particles against one another and/or the walls of the outer chamber during such swirling motion, supplemented by partial oxidation of the combustibles, raises the temperature of the particles and comminutes or reduces their sizes to form a very highly combustible flowable aerosol mass which will burst into flame when contacted by a stream of secondary combustion air. The combustion air may be mixed with the high temperature particle carrying stream at essentially the location of the discussed inner chamber of the device. The fuel air ratio in the apparatus may be closely controlled to attain optimum complete combustion of the particles.