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:
Jun. 29, 1976
Filed:
Jan. 21, 1975
Masahide Nomura, Hitachi, JA;
Hitachi, Ltd., , JA;
Abstract
A speed control device is constituted of an acceleration control device used for starting a turbine, a constant speed control device used for the constant speed operation of the turbine and a selection circuit for selecting that one of the outputs of the control devices which makes smaller the opening of an adjustable valve provided at the entrance of the turbine. The output of the selection circuit determines the opening of the valve. The speed control device is so designed that the speed regulation may affect only the loop gain of the constant speed control system. For this purpose, the speed regulation circuit is provided, for example, between the subtractor of the constant speed control device and the selection circuit.