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:
Oct. 08, 1985
Filed:
Apr. 30, 1984
Applicant:
Inventor:
Mitsuru Sato, Tokyo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128-4 ;
Abstract
A waterproof endoscope includes a insertion tube adapted to be inserted into a hollow organ. A hollow housing is connected to the insertion tube in an air-tight manner and disposed in communication therewith, the housing having an aperture formed therethrough. Mounted on the housing is a valve which includes a valve element for normally closing the aperture in the housing, and a spring made of a marmen alloy which is returned to a preselected shape at a predetermined temperature so as to urge the valve element away from the aperture, thereby opening the valve.