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:
Jan. 29, 2019
Filed:
Nov. 13, 2015
Sugatsune Kogyo Co., Ltd., Tokyo, JP;
Kazuyoshi Oshima, Tokyo, JP;
SUGATSUNE KOGYO CO., LTD., Tokyo, JP;
Abstract
Provided is a retracting device which can decrease a difference of restoring force of a tension coil spring between a retracted position and a stop position. The retracting device of the present invention includes a base, a sliderwhich can catch a triggerand move from the stop position to the retracted position with respect to the baseand a tension coil spring (B) for relatively moving the sliderwhich has caught the triggerfrom the stop position to the retracted position with respect to the baseto apply force for assisting the closing operation to a sliding door. The tension coil spring (B) is an initially-tensioned spring in which a coil closely contacts and which has initial tension in a direction in which the coil closely contacts when it is in a natural length.