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. 05, 2010
Filed:
Jan. 30, 2004
Takeo Yajima, Tokyo, JP;
Takeo Yajima, Tokyo, JP;
Koganei Corporation, Tokyo, JP;
Abstract
A flexible tubehas an inlet side fixed end, and an outlet side fixed end, and an elastic deformation portionis provided between them. The elastic deformation portionis provided with convex arc portions. In the convex arc portions, three apicesprovided apart at approximately regular intervals in the circumferential direction are each curved in a convex shape outward so as to have smaller curvature radius than that of a virtual circle S tangent to the apicesfrom each apex as a center for deformation. Concave arc portionsare formed consecutively between the respective convex arc portionsin circumferential direction, and the concave arc portionsare each curved in a concave shape outward. At a time of expansion and shrinkage of the elastic deformation portion, the respective convex arc portionselastically deform in the circumferential direction, and the concave arc portionselastically deform in the radial direction.