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:
Feb. 16, 2010
Filed:
Jul. 25, 2008
Applicants:
John Zork, Leduc, CA;
Wayne Rootsaert, Leduc, CA;
Norman Woodward, Bellingham, WA (US);
Inventors:
Assignee:
Aspen Custom Trailers, Richmond, British Columbia, CA;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60G 17/015 (2006.01);
U.S. Cl.
CPC ...
Abstract
A suspension system for towed vehicles automatically adjusts for different payloads and road conditions without the need for manual shims used in prior art suspensions. automatically adjusts a mechanical bias on the vehicle to keep the suspension within a preferred ride height range. A hydraulic cylinder between the frames of the towing and the towed vehicles provides a mechanical biasing force to the towed vehicle. A sensor measures the ride height and causes the hydraulic cylinder to retract or extend according to the bias needed to maintain the suspension in the preferred ride height range.