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:
Aug. 08, 1978
Filed:
Mar. 03, 1977
Otmar M Ulbing, Webster, NY (US);
Edmund R Koval, Tonawanda, NY (US);
Columbus McKinnon Corporation, Tonawanda, NY (US);
Abstract
A pressure actuated reversing switch for a pendant hoist control station is provided in which manually exerted pressure causes the electrical contacts to make and break in a staggered sequence. The armature of the switch is spring loaded so that pressure exerted on the armature causes the armature to move both laterally and rotationally. This complex motion permits contacts at one end of the armature to be brought into electrical contact with the leads prior to power contact being made at the other end of the armature. When pressure is released, the complex motion permits the power contacts to be broken prior to the breaking of the contacts at the other end of the armature. Additionally, the complex motion permits a self-cleaning action which assures reliability and long life.