JAN DAVID CLARKE
Engineers in York, PA
License number
Pennsylvania PE053466E
Category
Engineers
Type
Professional Engineer
Address
Address
York, PA 17408
Professional information
Electronic Slide Valve Position Indicator
US Patent:
5257921, Nov 2, 1993
Filed:
May 19, 1992
Appl. No.:
7/885576
Inventors:
Jan D. Clarke - York PA
Steven A. Bennis - Lancaster PA
Buford B. Chidester - York PA
Gregory P. Klidonas - York PA
Stephen E. Klinger - Etters PA
Brian K. Mohlman - Seven Valleys PA
Donald E. Sweigart - Hunt Valley MD
Steven A. Bennis - Lancaster PA
Buford B. Chidester - York PA
Gregory P. Klidonas - York PA
Stephen E. Klinger - Etters PA
Brian K. Mohlman - Seven Valleys PA
Donald E. Sweigart - Hunt Valley MD
Assignee:
FES, Inc. - York PA
International Classification:
F01C 116, F01C 124
US Classification:
4182012
Abstract:
A closed stainless steel tube is used to provide pressure and media isolation between the core and coils of a sensor in the form of a variable core transformer. The core is connected to and moved with a slide valve of a screw compressor and its actuating piston. The current output from the secondary coil is converted into a voltage, linearized and communicated to a microprocessor for controlling the position of the slide valve and thereby the loading of the compressor.