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:
Sep. 14, 1999
Filed:
Dec. 31, 1998
Hitoshi Tanaka, Saitama, JP;
Kosei Kosako, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a waterproof lens barrel in which a water-tight movable barrel which moves in the optical a is direction includes inner and outer cylinders, and a space between the inner and outer cylinders is sealed by an annular seal member, the annular seal member is held by a seal member holding ring separate from the inner cylinder or the outer cylinder. The seal member holding ring is inserted in the outer cylinder, wherein the annular seal member is brought into elastic contact with the inner surface of the outer cylinder. The inner cylinder is fitted in and secured to the outer cylinder, wherein the seal member holding ring is located in front of the inner cylinder.