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:
May. 09, 1989
Filed:
Jan. 15, 1988
Applicant:
Inventors:
James P Angus, Derby, GB;
Derek Salt, Derby, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K / ;
U.S. Cl.
CPC ...
374159 ; 374162 ; 376247 ; 405128 ;
Abstract
A temperature indicating device which comprises a plurality of panels in a fixed array. Some of the panels are adapted to undergo a reversible change in appearance at a given temperature whereas the remainder are adapted to undergo irreversible change in appearance at a given temperature. The device is useful in indicating the temperature which an object has achieved as well as its actual temperature.