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. 14, 2011
Filed:
Jun. 23, 2005
Hideki Seino, Chikugo, JP;
Takao Matsumoto, Chikugo, JP;
Hideki Seino, Chikugo, JP;
Takao Matsumoto, Chikugo, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
A conventional solid protection device disposed on an exposed side of a cylinder for actuating a working device had a possibility of being permanently deformed by contacting an obstacle so as to be prevented from sliding properly corresponding to the telescopic movement of the hydraulic cylinder. An object of the invention is to provide a hardly deformable protection device. To protect an exposed side of a cylinder for a working device, a protection device includes a guard member and a slide guide into which guard member is telescopically fitted. Slide guide is attached to a cylinder tube, and a tip of guard member is attached to a tip of piston rod. Guard member is a flat plate made of spring steel. A width of guard member is larger than a diameter of the piston rod. Notches are provided on lateral opposite sides of a basic side end of guard member. Sliders are fitted to respective notches. The top of guard member is bent into a roll-shape so as to serve as a pivotal portion.