Charles M Bowman

US Patent:

53733061, Dec 13, 1994

Filed:

Sep 3, 1993

Appl. No.:

8/116314

Inventors:

Leo J. Amore - Phoenixville PA
Susan L. Marr - Holland PA
Theodore A. Harris - Philadelphia PA
Alexander Bogorad - Plainsboro NJ
Charles K. Bowman - East Windsor NJ

Assignee:

Martin Marietta Corporation - East Windsor NJ

International Classification:

H01Q 142
H01Q 128
H01Q 140

US Classification:

343872

Abstract:

An RF-transparent sunshield membrane covers an antenna reflector such as a parabolic dish. The membrane includes a single dielectric sheet of polyimide film 1 mil thick. The surface of the film facing away from the reflector is coated with a layer of semiconductor material such as vapor-deposited germanium having a thickness in the range of 200. ANG. to 600. ANG. In another embodiment of the invention, the surface of the film facing the reflector may be reinforced by an adhesively attached polyester or glass fiber mesh.

US Patent:

43145450, Feb 9, 1982

Filed:

May 9, 1979

Appl. No.:

6/036820

Inventors:

Charles W. Bowman - Morrisville PA

International Classification:

F24J 302

US Classification:

126424

Abstract:

A solar hot water generating system is disclosed which comprises a vertically pivotable heat exchanger automatically pivotable by means of a timer-actuated electric motor. The heat exchanger is fluidly connected to an insulated storage tank which retains the thermal values of the heated fluid. The system is adapted to provide hot water for domestic and industrial uses, such as heating, air conditioning, and the generation of electricity by operation of a turbine.