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:
May. 24, 2011
Filed:
Apr. 02, 2009
Takeki Hayashi, Aichi-ken, JP;
Masashi Aoki, Aicih-ken, JP;
Hirokazu Matsuura, Aichi-ken, JP;
Hajime Kitte, Aichi-ken, JP;
Takeki Hayashi, Aichi-ken, JP;
Masashi Aoki, Aicih-ken, JP;
Hirokazu Matsuura, Aichi-ken, JP;
Hajime Kitte, Aichi-ken, JP;
Toyoda Gosei Co., Ltd., Aichi-pref., JP;
Abstract
When activated, an actuator causes a piston rod in a cylinder to move forwards so as to support a receiving member for receiving an object to be protected. A lock mechanism for restricting a backward movement of the piston rod includes a lock ring which is accommodated in an accommodating groove on a piston portion and a locking stepped portion on the cylinder side. The locking stepped portion includes a locking and restricting surface and an outer circumferential restricting surface. A taper restricting surface in the accommodating groove on the piston portion is brought into abutment with an inner surface on a forward moving side of the lock ring which is being diametrically expanded as a result of the piston rod having moved forwards and is in abutment with the locking and restricting surface and the outer circumferential restricting surface of the locking stepped portion, whereby the backward movement of the piston rod is restricted by making use of the lock ring which is restricted in the locking stepped portion.