Lawrence R Snowman Deceased7329 Eastgate Cir, Liverpool, NY 13090

6714306, Mar 30, 2004

May 19, 1986

06/864481

Joseph Lawrence Chovan - North Syracuse NY
Martin Francis Lowry - Liverpool NY
Evelyn Hope Monsay - Brewerton NY
William Arthur Penn - Baldwinsville NY
William Pattee Whyland - Marcellus NY
Lawrence Richard Snowman - Liverpool NY

Lockheed Martin Corporation - Bethesda MD

G01B 902

356484, 356517

The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.

6924895, Aug 2, 2005

Aug 1, 2003

10/632307

Joseph Lawrence Chovan - North Syracuse NY, US
Martin Francis Lowry - Liverpool NY, US
Evelyn Hope Monsay - Brewerton NY, US
William Arthur Penn - Baldwinsville NY, US
William Pattee Whyland - Marcellus NY, US
Lawrence Richard Snowman - Liverpool NY, US

Lockheed Martin Corporation - Bethesday MD

G01B009/02
G01N029/04

356484, 356517, 73657

The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.

7038780, May 2, 2006

Jun 20, 2002

10/177790

Joseph Lawrence Chovan - North Syracuse NY, US
Donald William Winfield - Camillus NY, US
Lawrence Richard Snowman - Liverpool NY, US
William Arthur Penn - Baldwinsville NY, US
Walter Beeman - Nikomis FL, US

Lockheed Martin Corporation - Bethesda MD

G01N 21/00

356432, 7386118, 73587, 73606

A method for sensing acoustic energy as the energy passes from a more dense to a less dense medium while compensating for energy level loses that may have occurred along the acoustic path of the acoustic energy. The method may be used to replace a multi-sensor system for detecting acoustic energy. The method includes permitting the acoustic energy to progress from a first transmitting medium to a second transmitting medium, the first transmitting medium being more dense than the second transmitting medium and the first medium being contiguous with the second medium along a predetermined interface; disposing an optical sensor in the second medium so that at least a portion of the acoustic energy imposes a modulation proportional to the frequency components of the acoustic energy on a sampling light emitted by the optical sensor; and detecting at least a portion of the sampling light having modulation in response to the portion of the acoustic energy.

2006013, Jun 29, 2006

Aug 2, 2005

11/195584

Joseph Chovan - North Syracuse NY, US
Martin Lowry - Liverpool NY, US
Evelyn Monsay - Brewerton NY, US
William Penn - Baldwinsville NY, US
William Whyland - Marcellus NY, US
Lawrence Snowman - Liverpool NY, US

G01B 9/02

356484000

The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.

4226533, Oct 7, 1980

Sep 11, 1978

5/941431

Lawrence R. Snowman - Liverpool NY

General Electric Company - Syracuse NY

G08B 1710

356338

An optical particle detector is disclosed using a dark field optical system in which an air sample is illuminated and forward scattered light is collected in a zone centered about but excluding on-axis light. The collected light is then sensed to detect the presence of air borne light scattering particles. Particles of greatest interest are smoke particles. The system includes a self-contained light source and a photo detector suitable for operation by a dry cell. The optics are designed for high light gathering efficiency consistent with minimum space requirements and the internal design minimizes scattered light to achieve maximum smoke detection sensitivity.