Alexander E Martens

US Patent:

6688179, Feb 10, 2004

Filed:

Oct 24, 2002

Appl. No.:

10/280264

Inventors:

Michael D. Potter - Churchville NY
Alexander E. Martens - Rochester NY

Assignee:

Nth Tech Corporation - Churchville NY

International Classification:

G01L 700

US Classification:

73700, 257252, 257248

Abstract:

A pressure transducer system includes a housing with a chamber, a member with a stored electrical charge, and a pair of electrodes that are at least partially in alignment with each other. At least a portion of the chamber is at a reference pressure. The member is connected to the housing and extends across at least a portion of the chamber. Each of the pair of electrodes is connected to the housing and is spaced from and on substantially opposing sides of the member. The member is movable with respect to the pair of electrodes or one of the pair of electrodes is movable with respect to the member in response to a monitored pressure.

US Patent:

40211169, May 3, 1977

Filed:

Sep 2, 1975

Appl. No.:

5/609862

Inventors:

Alexander E. Martens - Fairport NY

Assignee:

Bausch & Lomb Incorporated - Rochester NY

International Classification:

G01C 308

US Classification:

356 4

Abstract:

A high resolution optical electronic measuring device for measuring displacement distance between an object which moves and one which is generally stationary includes apparatus for generating a series of cyclic radiation fringe patterns moving in correspondence with the object being observed and electrical circuitry for processing two corresponding cyclically generated electrical signals to provide increased measurement resolution by electronically multiplying each division on a measuring scale into eight measurement increments.