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. 14, 1979
Filed:
Feb. 23, 1978
Kiyokazu Hosaka, Tami, JP;
Olympus Optical Company, Tokyo, JP;
Abstract
An endoscope film feeding device for delivering a film in the distal end portion of a sheath of an endoscope comprises a feeding pulley rotatably mounted in an operation section of the endoscope and having a frustoconical drum portion with a helical groove in its outer peripheral wall. The feeding device also includes an operating wire with its one end connected to the larger end portion of the drum portion and the other end to a film takeup wire wound about the film takeup pulley in the distal end portion of the sheath. Each time the drum portion is rotated through a predetermined angle, the operating wire gradually engages the helical groove from the larger diameter end to the smaller diameter end so that the operating wire pulls the film takeup wire to rotate the film takeup pulley to feed the film with an equal frame length kept for each film takeup.