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:
Aug. 18, 1981
Filed:
Apr. 04, 1979
Shinsuke Komoto, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A close-up lens cylinder having at least an attaching cylinder for attachment to a camera body, an operating ring for operating an advance for focussing an advancing cylinder for a straight advance and a lens frame for supporting a lens. An advancing groove is divided into a circumferentially extending groove and a lead or cam groove such that by rotating the operating ring, initially only the lens frame is advanced with respect to the attaching cylinder without advancing of the operating ring and the advancing cylinder. After the advance is substantially completed, the operating ring and the advancing cylinder are advanced together with the lens frame.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile