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. 22, 2003
Filed:
Jul. 20, 2001
Haruo Akiba, Saitama, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A jet nozzle for spurting a wash fluid toward an observation window of an optical image pickup system fitted in a rigid tip end section of the insertion instrument for cleaning the observation window. The jet nozzle includes an inlet passage portion which is provided at a proximal end of the jet nozzle coaxially in communication with an axial wash fluid passage in the rigid tip end section of the insertion instrument, a jet spout passage portion which is located on a distal end face of the rigid tip end section and terminating with a jet spout opening of a predetermined width. The jet spout passage portion is provided with a straight flow rectifying passage of a predetermined length toward the jet outlet opening. The jet nozzle further includes a turn passage portion which is connected between the wash fluid inlet passage and the jet spout passage portion to turn a flow passage of the wash fluid in a radially diverting direction from the axial wash fluid passage, and connected to the jet spout passage portion in a radially diverted position on the distal end face of the rigid tip end section.