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:
Apr. 10, 1979
Filed:
May. 04, 1977
Hiroshi Sawano, Tokorozawa, JP;
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
According to the invention, a helicoid mechanism is provided at each side of a supporting member of the lens barrel fixed by a tripod seat or the like, the front one being intended for effecting the displacement of the lens while the rear one being intended for displacing the camera, whereby a larger stroke of the lens displacement which is materially twice the conventional one is obtained with machining precision of conventional helicoid means. Means are provided for representing accurately the photo-taking distance, irrespective of whether either one of the front and rear helicoid mechanisms is solely adjusted, both of these helicoid mechanisms are individually adjusted or both of them are simultaneously operated, so as to render the operation of these helicoids free and to ensure an easier and more exact reading of the photo-taking distance.