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:
Jul. 07, 1981
Filed:
Nov. 16, 1979
Earl B Hoekman, Roseville, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
An apparatus for providing a time-controlled output based primarily upon a primary time source and secondarily upon a secondary time source, the secondary time source counted down to the desired frequency of the time-controlled output. A sensor supplies a control circuit which outputs the primary time source signal when the primary time source is operative, and the secondary time source signal when the primary time source is not operative. The output of the control circuit then resets the appropriate segment of the secondary time source counter in order to synchronize the time-controlled output for the primary time source when the primary time source is operative.