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. 10, 1990
Filed:
Sep. 13, 1988
Edward J Breitung, II, Springfield, IL (US);
Stewart Warner Corporation, Chicago, IL (US);
Abstract
A completely electronic programmable hour meter is disclosed. The hour meter accumulates and displays run time of the device being measured. The hour meter can also count pulses. The meter can be preprogrammed with a maintenance timer limit which is compared to the accumulated run time. If the accumulated run time equals or exceeds the preprogrammed time limit an alarm display flashes. The hour meter will store the accumulated run time for up to 5 years if power is interrupted. This memory retention occurs without use of a battery. The elapsed time is stored in a plurality of registers such that no register is written to more than a preselected number of times, nominally ten thousand, until all the registers have been updated the preselected number of times.