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:
Nov. 13, 1979
Filed:
Feb. 09, 1978
James A Martin, Jr, Newtown Township, Delaware County, PA (US);
Harry F Martin, Middletown, PA (US);
William R Berry, Camden, NJ (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Apparatus and method for automatically determining and indicating that the rotor of a steam turbine has attained a predetermined minimal temperature. Means are utilized for measuring axial dimensional changes of the steam turbine cylinder and rotor due to an increased temperature and summing pertinent axial dimensional changes thereby determining the axial expansion of the rotor which in turn, through known physical properties of the rotor material, corresponds to a temperature increase. This increase of the temperature added to the initial temperature of the rotor provides the total temperature, and upon the total temperature reaching a predetermined value, the steam turbine is available to be brought up to speed and loaded.