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:
Aug. 05, 2014
Filed:
Apr. 25, 2012
Shinichi Yamakawa, Kanagawa, JP;
Tsuyoshi Ashida, Kanagawa, JP;
Takayuki Nakamura, Kanagawa, JP;
Yasunori Ohta, Kanagawa, JP;
John J. Allen, Mendota Heights, MN (US);
Charles Alan Brantingham, St. Paul, MN (US);
Shinichi Yamakawa, Kanagawa, JP;
Tsuyoshi Ashida, Kanagawa, JP;
Takayuki Nakamura, Kanagawa, JP;
Yasunori Ohta, Kanagawa, JP;
John J. Allen, Mendota Heights, MN (US);
Charles Alan Brantingham, St. Paul, MN (US);
FUJIFILM Corporation, Tokyo, JP;
Abstract
An insertion assisting device includes a rotary body in the form of toroid, and a support and drive part for supporting the rotary body in a rotatable manner and rotating it. The support and drive part has an approximately cylindrical supporting member for supporting the rotary body in a rotatable manner. The rotary body is provided with a convex portion for increasing the thickness to improve the strength thereof. A concave portion having a shape corresponding to the shape of the convex portion is formed on a portion of a front end surface of the supporting member, which is made in contact with the convex portion. The concave portion prevents the rotary body from stopping rotating, which may be caused by point contact between the convex portion and the supporting member.