The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1991
Filed:
Dec. 26, 1989
Clyde O Peterson, Plum Borough, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A compressor coupled to a load of smaller capacity is provided for loading with a setpoint adjusting circuit substituting a pseudo-setpoint signal for the pressure signal derived from the load, so that the master-controller operates in response to a signal increasing gradually from a low initial value until matching in magnitude with the assigned setpoint signal for normal operation. The master-controller is modified so as to bypass the normal modulation means during loading, a minimum inlet valve opening being imposed initially and concurrently the bypass valve being allowed to close under the low initial value, inlet valve control being enabled after the bypass valve has closed and in accordance with said gradual increase of the pseudo-setpoint signal. After load pressure has reached the assigned pressure setpoint in magnitude, the master-controller normal operation is reinstated.