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:
Jun. 03, 2014
Filed:
May. 14, 2010
Koushi Yamaguchi, Tokyo, JP;
Kazuaki Kashiwaguma, Tokyo, JP;
Mitsuru Sugiura, Tokyo, JP;
Sugatsune Kogyo Co., Ltd., Tokyo, JP;
Abstract
Provided is a door opening and closing device wherein the device width can be made small and wherein the movement of a retraction arm can be stabilized. In a body case () which is slender and extends in one direction, there is provided an arm block () for a retraction arm () which rotates from the open state to the closed state. On one side of the body case (), there is provided a first slider () which, being interlocked with the rotation of the arm block (), makes linear movements in one direction. In the body case (), there is provided an arm shaft () which serves as the center of rotation of the arm block (). A second slider () which, being interlocked with the rotation of the arm block (), makes linear movements in one direction, is provided opposite the first slider (), in such a way as to have the arm shaft () held between the first and second sliders (). On one side of the body case (), there is provided a force applying member () which applies force on the first slider () in one direction. On the opposite side of the body case (), there is provided a damper which resists the linear movement of the second slider ().