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:
Jul. 19, 2016
Filed:
Jun. 21, 2011
Xiaogang Yi, Changsha, CN;
Yongdong Liu, Changsha, CN;
Bingbing Chen, Changsha, CN;
Hunan Sany Intelligent Control Equipment Co., Ltd., Changsha, CN;
Sany Heavy Industry Co., Ltd., Changsha, CN;
Abstract
A hydraulic oil cylinder has a buffer sleeve (), a rodless cavity sealing end face (-) and at least one throttle oil channel (-). The buffer sleeve () is sleeved on an additional section () of a piston rod in the rodless cavity (-) and axially slidable along the additional section () of the piston rod. The rodless cavity sealing end face (-) is provided in an oil cylinder cavity between a rodless cavity oil passing hole (-) and the termination of the rodless cavity end face of the piston for the retraction process of the piston rod (), and enables to block the buffer sleeve () and attach to the first end surface (-) of the buffer sleeve thereby forming a sealing surface.