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. 13, 1976
Filed:
Jan. 10, 1975
Ward Sievenpiper, Alden, NY (US);
A-T-O Inc., Willoughby, OH (US);
Abstract
A hydraulic strut primarily for use in an off-highway vehicle suspension system having a pair of liquid springs connected together in tandem in axial alignment for providing two distinct spring constants to the suspension system. The spring constants are provided to operationally correspond to the loaded and unloaded condition of an off-highway vehicle such as large dump trucks and other similar equipment. Each liquid spring includes a cylinder filled with pressurized hydraulic fluid with a displacement rod reciprocably slidable in a sealed manner through one end of the cylinder means. The free ends of the two displacement rods are connected between the chassis and body portion of the vehicle to provide composite suspension afforded through the different spring constants. In addition, each liquid spring includes a dampening head attached to its respective displacement rod so as to provide spring suspension to the vehicle in a controlled and desired manner.