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:
Nov. 10, 2020
Filed:
Feb. 26, 2018
Applicant:
Eagle Industry Co., Ltd., Tokyo, JP;
Inventor:
Tatsuhiro Arikawa, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 3/04 (2006.01); F16J 15/52 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
F16J 3/047 (2013.01); F16J 15/52 (2013.01); B29L 2031/703 (2013.01); F15B 2201/205 (2013.01); F15B 2201/3153 (2013.01); F16J 3/048 (2013.01);
Abstract
A bellows excellent in durability has an accordion shape where crest parts with U-shaped cross sections and trough parts with U-shaped cross sections are repeatedly formed via slope parts, the slope parts leading to the crest part includes first portions, second portions, third portions and fourth portions which are continuously connected, in order, to one another from the crest part toward the adjacent trough parts, and in a free length state of the bellows, a separation distance between the second portions of the both slope parts is longer than separation distances between the first portions and between the third portions.