Andrew D Gavrilos

US Patent:

49203053, Apr 24, 1990

Filed:

Feb 8, 1989

Appl. No.:

7/308989

Inventors:

Richard E. Benson - Mentor OH
Andrew D. Gavrilos - New Kensington PA
Robert S. Rand - Painesville OH
Scott M. Shaw - Allison Park PA
Joel W. Spafford - Cleveland OH
Ronald J. Walko - Ford City PA

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

G05B 320

US Classification:

318657

Abstract:

An electro-hydraulic positioning system which has automatic calibration capabilities is disclosed. The system includes a microprocessor which accesses calibration parameters stored in a non-volatile memory unit. The microprocessor adjusts the position demand according to the stored calibration parameters. The system may be placed in an atuomatic calibration mode. In which case, update calibration parameters are automatically determined and stored. The system also includes a microcontroller which monitors system operating variables and reports deviations of the variables from expected values for same.

US Patent:

50278533, Jul 2, 1991

Filed:

Feb 21, 1989

Appl. No.:

7/341798

Inventors:

Ronald Walko - Ford City PA
Thomas Kallay - Verona PA
Kevin Kallay - Verona PA
Robert Holden - Raleigh NC
Andrew Gavrilos - New Kensington PA

Assignee:

Electronic Technology Systems, Inc. - New Kensington PA

International Classification:

F16K 3700

US Classification:

137554

Abstract:

Apparatus which monitors the extent to which a mechanical valve (2) is opened which employs a rotary position transducer (5). The rotary position transducer (4) provides a signal representative of valve (2) position to a signal processor (10, 140 for analysis. The signal processor (10, 14), in turn, activates various announciator lights (122, 124) which provide a visual indication of valve (2) position and sends signals to other apparatus (21) associated with the valve (2). Also provided is a mounting (30, 32, 44, 102, 104) for apparatus which monitors the extent to which a mechanical valve (2) is opened.