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:
Apr. 12, 1988
Filed:
Nov. 27, 1985
Ronald W Batten, Torrance, CA (US);
Other;
Abstract
There is disclosed an easily releaseable, internally threaded fastener having at least one axial slot which extends substantially through the wall of the fastener. The external wall of the fastener is non-cylindrical, e.g. hexagonal, or three-lobed, to permit the application of a fastening torque to the fastener. The fastener is surrounded by a retainer sleeve having a mating, internal wall portion which provides hoop strength to the fastener. The retainer also has an annular recess in its internal wall whereby the retainer can be slid axially, or rotated, to release the fastener. The fastener assembly includes a metal spacer seated in each axial slot of the fastener to permit the even transmission of the fastener application torque. In preferred embodiments, the fastener is formed by cutting several axial slots through the body of the fastener, but terminating short of severing the threads, thereby providing a fastener which, when released by the retainer, will yieldingly fail, thus avoiding the mechanical shock of release which is experienced upon the release of separate fastener segments.