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:
Jan. 14, 1986
Filed:
Sep. 27, 1983
Shinsuke Komoto, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A mechanism for extending a floating lens includes a rear group helicoid ring integral with a distance ring and supported rotatably on a stationary ring. A rear group lens frame which is threadably engaged with the rear group helicoid ring is guided for straight line movement as the rear group helicoid ring turns. A front group helicoid ring is rotatably supported on the rear group lens frame and a front group lens frame which is threadably engaged with the front group helicoid ring is guided for straight line movement as the front group helicoid ring turns. A guide plate is disposed outside the front group helicoid ring and is fixedly secured to the stationary ring. The guide plate is provided with a straight guide groove for guiding the rear group lens frame and a curved groove. A guide roller integral with the front group helicoid ring is engaged in the curved groove for turning the front group helicoid ring as the front group helicoid ring is moved back and forth with the rear group lens frame.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile