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:
Nov. 22, 1983
Filed:
Jun. 17, 1982
Steven M Breslau, Evanston, IL (US);
M Gary Grossman, Fort Lee, NJ (US);
Sima Products Corporation, Chicago, IL (US);
Abstract
A camera lens accessory and mounting ring construction for positioning and locking lens accessories, such as filter or aperture discs, at the front of the lens. The discs include a respective notch formed along the circumference thereof and the mounting ring has a pair of oppositely-facing lugs formed on the inner-facing circumference thereof. The discs are mountable to the end of the lens by slipping one or more selected discs under one of the lugs, lining up the notch on the discs to be in registry with the other of the lugs and slipping the discs under the latter lug. The discs are then rotated to move the notch out of registry with the lugs such that the discs are retained behind the two lugs, and the mounting ring is threadly engaged over the lens barrel to secure the discs upon the end of the lens.