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. 05, 1988
Filed:
Nov. 14, 1986
Jan Ghering, Gustavsburg, DE;
Man Gutehoffnungshutte GmbH, Nurnberg, DE;
Abstract
A pontoon unit capable of folding up in a W-like manner. The two inner pontoons are connected by a center hinge, and the outer pontoons are pivotably connected to the inner pontoons by lower hinges via a lever. As an aid to overcome the buoyancy during unfolding, a tension spring is arranged between the lever and the outer pontoon. This spring is tensioned in the folded condition. After unfolding, the tension spring is virtually relaxed, and would be tensioned again for folding. This is avoided by interposing a variable-length connection member, typically a hydraulic piston/cylinder unit, between the tension spring and the outer pontoon. By being extended, this connection member avoids the need for the tension spring to be tensioned during folding. Only after the folding operation has been completed is the tension spring tensioned again by shortening the connection member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile