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. 25, 2016
Filed:
Jul. 27, 2015
Riso Kagaku Corporation, Tokyo, JP;
Kensuke Shiina, Ibaraki, JP;
RISO KAGAKU CORPORATION, Tokyo, JP;
Abstract
A door opening and closing device includes, a door supporting portion for supporting an axial side of a door, a door receiving portion inclined to the door supporting portion for receiving an open-send side of the door, an opening formed from the door supporting portion to the door receiving portion to be opened and closed by the door, a first support point made by a combination of a shaft attached to the axial side of the door and an elongated hole formed on the door supporting portion, and a second support point provided at an intermediate portion between the axial side and the open-end side of the door and capable of freely contacting-with and separated-from the door receiving portion. The open-end side is angled to the axial side to have an angle therebetween in accordance with an inclined angle of the door receiving portion to the door supporting portion.