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. 14, 1981
Filed:
Jan. 24, 1980
Chang J Song, Seoul, KR;
Other;
Abstract
A small, strong jewelry clasp which requires fewer manufacturing steps to produce is disclosed. A generally flat, rectangular, elongate pin body is formed having a finger element extending from one end thereof. The other end of the pin body typically has a hole formed therethrough to capture a link of a chain. The upper surface of the pin body has a notch formed therein for receipt of a compression spring. This notch is bounded on one end by a spring stop portion of the pin body. The other end of the notch is open. A box-like enclosure member is formed by folding a flat piece of malleable material to fit around both the pin body and the notch formed in the pin body. A portion of the enclosure which is near the open end of the notch is folded inwardly so that when the enclosure is slid over the pin body, a spring is captured between the spring stop portion of the pin body and inwardly folded portion of the enclosure. The finger element is then bent into a generally J-shaped configuration so that the end of the free end of the finger element abuts the inwardly folded portion of the enclosure. The enclosure is typically provided with a protuberance or handle by which the enclosure can be urged against the biasing force of the compression spring to create a gap between the inwardly folded portion of the enclosure and the free end of the finger element. A link of a jewelry chain is placed into and secured within the aperture formed by the finger element, the pin body and the enclosure.