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:
Oct. 18, 2022
Filed:
Apr. 27, 2022
William E. Holley, Tampa, FL (US);
William E. Holley, Tampa, FL (US);
Other;
Abstract
An oar apparatus configured to remain submerged under water during the power stroke and the return stroke. The oar apparatus has a sheath and a shaft rotationally disposed within the sheath. An oar blade is affixed to the shaft, such that the oar blade is rotational relative to the sheath. The oar blade has a deployed orientation, in which the oar blade is substantially perpendicular to the movement direction of the vessel, and a feathered configuration, in which the oar blade is substantially parallel to the movement direction of the vessel. The oar blade is asymmetrical relative to the center axis of the shaft, such that resistance of the water exerted onto the oar blade creates a first moment urging the oar blade into the deployed orientation during the power stroke and a second moment urging the oar blade into the feathered orientation on the return stroke.