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:
Dec. 06, 1983
Filed:
Mar. 22, 1982
Michael Wenzel, Alameda, CA (US);
Other;
Abstract
A threaded fastener having a self tool movable from an operable position to an out-of-the-way position which includes a threaded shaft, a laterally expanded head having a cavity beneath it surrounding the shaft, holes in either side of the expanded head, a D-ring having its opposite ends in the holes through the sides of the head, and an elastomeric ring such as an O-ring surrounding the threaded shaft and extending partly into the cavity so that when the threaded fastener is screwed into a threaded opening to receive it the O-ring is forced into the cavity when the fastener is tightened providing enough friction to hold the D-ring in its out-of-the-way position. If the object being held with the threaded fastener has a circular cavity having a diameter greater than the diameter of the D-ring, the D-ring, in its out-of-the-way position, will also lie in that recess where it will not interfere with the use of the object being held with the threaded fastener.