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:
Jul. 02, 1991
Filed:
Dec. 19, 1989
Nagashige Takahashi, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An air and water supply apparatus for an endoscope having an elongated insert part and a control part connected to the proximal end of the insert part, comprising a cylinder provided in the control part, a pair of first air and water tubes for supplying air and water, respectively, into the cylinder, a pair of second air and water tubes for sending air and water, respectively, to the distal end of the insert part from the cylinder, a water supply switching valve slidably fitted in the cylinder to change the condition of communication between the first and second water tubes, and an air supply switching valve slidably fitted in the water supply switching valve to change the condition of communication between the first and second air tubes, whereby the first air tube and the second water tube are communicated with each other by pushing both the water and air supply switching valves into the cylinder or by pulling the air supply switching valve in the direction in which it is drawn out of the cylinder. Thus, air is sent into the second water tube from the first air tube to purge the water remaining in the second water tube.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile