Wayne E Graham

US Patent:

42838576, Aug 18, 1981

Filed:

Aug 17, 1979

Appl. No.:

6/067547

Inventors:

Erwin W. Graham - Saratoga CA
Wayne B. Graham - San Jose CA

International Classification:

G01B 328
G01B 518

US Classification:

33169R

Abstract:

A spindle-height gage is provided for measuring the height of one or more spindles in a tape recorder. The gage includes a pair of indicators rigidly mounted to a stable base configured for insertion into the tape recorder in lieu of a cassette. Upon insertion of the base plate into the recorder, the spindle under test comes into contact with a "foot" extending from a shaft of one of the indicators, which then provides indication of the spindle height. The gage is calibrated by inserting into the gage a calibrating disc having two shoulders, each of a height corresponding to the specified height of one of the spindles.

US Patent:

48074756, Feb 28, 1989

Filed:

Sep 2, 1987

Appl. No.:

7/092065

Inventors:

Wayne B. Graham - Los Altos Hills CA

International Classification:

G01P 1504

US Classification:

73492

Abstract:

An accelerometer has a single pendulum-type acceleration sensitive element, the movement of the pendulum moving a pointer through a gear arrangement such that scale graduations on a face of the instrument may be linear or of other character. Auxiliary pointers are provided so as to indicate the maximum positive and negative values of acceleration experienced by the instrument, maintaining always the highest magnitude reading attained. The recording auxiliary pointers are manually resettable from outside the instrument.

US Patent:

48631159, Sep 5, 1989

Filed:

Apr 4, 1988

Appl. No.:

7/176890

Inventors:

Wayne B. Graham - Los Altos Hills CA

International Classification:

G11B 23087

US Classification:

242199

Abstract:

A test cassette is provided for testing tape tensioning devices in tape recorders and players. The test cassette has a at least one of a supply reel and a takeup reel which has two circular arc portions of different radius. In a preferred embodiment, one of the circular arc portions has the radius of a substantially full reel of tape, and the other has the radius of a substantially empty reel of tape. In operation the test cassette simulates the conditions of a full reel and the conditions of a substantially empty reel with each revolution of the reel, and the extremes of operation of a tape tensioning device can be quickly and easily tested.

US Patent:

45547432, Nov 26, 1985

Filed:

Mar 30, 1984

Appl. No.:

6/595139

Inventors:

Wayne B. Graham - San Jose CA
John Bonn - Saratoga CA

Assignee:

Tentel Corporation - CA

International Classification:

G01B 322

US Classification:

33172R

Abstract:

A gauge for use in measuring the protrusion of a head from the surface of a video recorder is disclosed. The gauge is a universal gauge which can accurately and reproducibly measure head protrusion on any video recorder without the need of precision aligned mounting holes. The necessary accuracy is achieved by a unique double pivot design along with a universal mounting scheme. A novel mechanism is also provided to aid in visual alignment of the gauge and to provide a positive indication of misalignment by the user.