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:
Mar. 02, 2004
Filed:
Jan. 21, 2003
Wen-Guey Liou, Taichung, TW;
Chao-Hsuan Liu, Taichung Hsien, TW;
Yu-Chih Liu, Taichung Hsien, TW;
Chieh-Feng Liu, Taichung Hsien, TW;
Other;
Abstract
A hydraulic damping device has a cylinder, a rod, a piston, a first biasing member, a seal and a second biasing member. The rod moveably extends into the cylinder. The piston is securely attached to the rod to divide the cylinder into two chambers. The piston has multiple first channels and multiple second channels communicating with the chambers, wherein each first channel has a diameter larger than that of each second channel. The first biasing member is connected to the rod to provide a recoil force to the rod. The seal is moveably mounted on the rod and abuts against the piston to close the first channels in the piston. The second biasing member is mounted on the rod to provide a force to push the seal. Accordingly, the hydraulic damping device has a capability of adjusting the damping effect and has a simplified structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile