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:
Jan. 13, 1987
Filed:
May. 24, 1983
Robert H Broyden, Williamsville, NY (US);
Douglas E Schenk, Tonawanda, NY (US);
Raymond A Newman, Cheektowaga, NY (US);
Columbus McKinnon Corporation, Amherst, NY (US);
Abstract
Load position limits and incremental lowering of a load are controlled by a microprocessor forming an interface between an operator's control station and the hoist. Other hoist status conditions such as underspeed and overspeed of the hoist motor are detected by the microprocessor based upon hoist speed during the position limit setting cycle. Still other hoist status data such a motor overheating, number of power-up cycles, number of under and overspeed shut-downs, number of power failures, etc. are input to the microprocessor and all such data as up-dated are entered into a non-volatile memory which, when extracted, permits maintenance scheduling.