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:
Jul. 04, 1989
Filed:
May. 29, 1987
Franklin G Smith, Portland, OR (US);
Other;
Abstract
A hinge connection for eyeglasses connects a lens frame to a temple piece with a threaded pin which does not loosen or fall out of the hinge even after repeated hinging movement of the temple piece. The hinge has a bore which is lined with an insert made of a material having cold flow characteristics. The liner has an untapped bore with a diameter slightly smaller than the major diameter of the pin. The pin has interrupted ferrule threads. When the pin is pushed into the bore of the liner, cold flow reformation of the bore locks the pin in place. The pin can be removed from the liner when desired by rotating the pin to cause its threads to form complementary helical thread in the bore wall and thereby thread its way out of the liner.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile