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:
Oct. 13, 1987
Filed:
Dec. 09, 1985
Johnie N Lesikar, Savannah, GA (US);
Roper Corporation, Kankakee, IL (US);
Abstract
A releasable locking device for mounting in the bore of a shaft or the like for retaining an element thereon. The releasable locking device is in the form of a cotter ring comprising a one piece rod formed of flexible material and having a leading portion, a central portion and a trailing portion. The central portion is wound in the form of a helix so as to form more than one but less that two full helical turns with adjacent turns being separated by a distance insufficient for the rod to be freely trained through the bore of the shaft during mounting. The leading portion extends tangentially from the central portion so as to define a lead that is freely insertable into the bore, and the trailing portion is helically shaped in axially flared relation to the central portion in a manner that progressively increases the axial spacing between the trailing portion and the immediately adjacent turn of the central portion to facilitate removal of the device from a locked position.