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. 17, 1977
Filed:
Jun. 30, 1975
Applicant:
Inventors:
Gordon Malcom Edge, Saffron Walden, EN;
Keith Douglas Ridler, Fulbourn, EN;
Frederick James Easthope, Cambridge, EN;
Assignee:
Strathearn Audio Limited, Belfast, EK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P / ;
U.S. Cl.
CPC ...
324168 ; 73506 ;
Abstract
An arrangement for use in indicating the speed of rotation of a body including a switch operated by elements which rotate according to the rotation of the body, a frequency generator which has an output signal at a frequency related to the desired speed of rotation of the body and an indicator which is actuated in accordance with the signals from both the switch and the frequency generator.