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:
Jan. 28, 2020
Filed:
Mar. 18, 2019
William F. Martin, Boca Raton, FL (US);
William F. Martin, Boca Raton, FL (US);
Other;
Abstract
A watercraft includes left and right hull members that are held in spaced apart, parallel relation by a supporting frame structure. A pendulum propulsion assembly mounts to the frame structure, between the hull members, and includes left and right pendulum assemblies that are each movable in a forward and rear direction by the operator's arms and legs. Each pendulum assembly includes at least a forward pendulum member extending through an upper pivotal connection to a lower pivot element coupled to a horizontal pendulum plane. A paddle holder mounted below the pendulum plane supports an arrangement of spaced paddles. Operation of the left and right pendulum assemblies in the forward and reverse alternating action through a normal stride causes the paddles to propel the watercraft in a forward direction. Forward flexing of the paddles in the power stroke is limited by tethers connecting between the paddles and the paddle support.