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. 27, 2001
Filed:
Jul. 22, 1998
Kenji Chino, Kariya, JP;
Masaya Hyodo, Kariya, JP;
Takayuki Muto, Gifu-ken, JP;
Teruyuki Shioya, Gifu-ken, JP;
Other;
Abstract
A hydraulic apparatus is used in an industrial vehicle. The apparatus has a hydraulic cylinder interposed between a vehicle frame and an axle swingably coupled to the frame. A passage connects a first chamber with a second chamber defined by a piston in a cylinder case. The piston is movable based on differential pressure in the chambers. A cylinder rod selectively extends and retracts in respect with the cylinder case to absorb a swinging motion of the axle. The passage is selectively open and closed based on at least one of a traveling state and a loading state of the vehicle. The piston has a first surface defining the first chamber and a second surface defining the second chamber. The first surface has an area equal to that of the second surface.