Stephen R Bolger

US Patent:

20050260092, Nov 24, 2005

Filed:

Oct 28, 2004

Appl. No.:

10/977664

Inventors:

Stephen Bolger - New York NY, US

International Classification:

F03C002/00
F01B029/10
F04C002/00
F02G001/04
F03C004/00

US Classification:

418142000

Abstract:

A variable-volume positive-displacement device configured to accommodate large flow volumes is disclosed. The variable-volume positive-displacement device despite being compact and lightweight, maintains pressure ratios of over 10 to 1 in a single stage operation. There is little loss of working fluid leakage, due to optimum sealing configurations and extremely low-seal sliding speeds. The device comprises a housing defining a closed chamber within opposing walls and a displacer mounted within the housing. The displacer maintains sliding contact with each of the inner wall surfaces of the chamber as it orbits and engages each of the inner wall surfaces in sequence. The volumes of the chambers surrounding the displacer vary as the displacer moves, depending on the position of the displacer. Working fluid is introduced into the chamber via inlet ports or is discharged via an outlet. This device may be used to replace conventional piston pumps, rotary pumps, scroll pumps, screw pumps, roots blowers, gear pumps and wankel displacers for pumping gases and liquids in applications requiring reduced frictional losses and tight sealing and relatively large displacement in a small volume. With integral valve-operators, the inventive device replaces turbines used for expansion of gases with large pressure ratios. This invention is particularly useful for constructing Brayton cycle engines and refrigerators. The inventive device offers improved operation and functional characteristics and lower cost of manufacture.

US Patent:

54548799, Oct 3, 1995

Filed:

Mar 17, 1994

Appl. No.:

8/210038

Inventors:

Stephen R. Bolger - New York NY

International Classification:

H01L 31058
H01L 3118

US Classification:

136253

Abstract:

The invention provides for methods that include the steps of continuous liquid phase epitaxy followed by evaporation or implantation of dopant, barrier-interconnect, and additional interconnect-dopant layers to grow cylindrical helical multi-layer structures which form long series chains of photocells when sliced, etched, and passivated. The invention also provides for uniquely formed photovoltaic devices fabricated by the method, as well as the use of such devices as infrared photovoltaic generators using radiation from a local thermal source or reservoir.

US Patent:

56254857, Apr 29, 1997

Filed:

Aug 2, 1995

Appl. No.:

8/510472

Inventors:

Stephen R. Bolger - New York NY

International Classification:

G02F 202
H02N 600

US Classification:

359326

Abstract:

A parallel paired, closely coupled, first and second resonant notch filter array. The disclosed frequency doubling filters are particularly useful in the field of thermophotovoltaics for upgrading black body radiation from heated objects to a shorter wavelength such as for illuminating silicon solar cells.

US Patent:

50957007, Mar 17, 1992

Filed:

Jun 13, 1991

Appl. No.:

7/714667

Inventors:

Stephen R. Bolger - New York NY

International Classification:

F02G 1043

US Classification:

60517

Abstract:

A reversible thermal engine is provided which operates on the principles of the Stirling and Ericsson cycles. The engine comprises two variable volume compartments connected by passageway with a regenerator therein. Heat exchangers provide heating and cooling to the working gas during the cycle. Control means are provided to vary the volume of the gas transferring between compartments such that the volume variations of the gas are in the form of overlapping quadrilateral waveforms.

US Patent:

57753059, Jul 7, 1998

Filed:

May 6, 1997

Appl. No.:

8/851664

Inventors:

Stephen R. Bolger - New York NY

International Classification:

F02M 3704
F04B 1700

US Classification:

123497

Abstract:

A fuel pump injector for a reciprocating engine having a piston and combustion chamber. The injector comprises a housing having a driving piston slidably received therein. The driving piston is responsive to the pressure in the combustion chamber. A driving cylinder of fuel interfaces with the driving piston and holds the driving piston in place by static pressure. A second smaller diameter driven cylinder of fuel is responsive to the pressure of the driving cylinder. The driving piston statically pressurizes the driving cylinder during the engine's compression stroke. A valve releases the pressure from the driving cylinder to effect fuel injection by transferring the force on the driving piston onto the smaller diameter driven cylinder which injects the atomized fuel into the combustion chamber where it ignites.

Author:

Stephen G. Bolger

ISBN #:

0405093209