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. 07, 2020
Filed:
Apr. 22, 2016
Oscar Propulsion Ltd., West Sussex, GB;
David Graham Taylor, West Sussex, GB;
Oscar Propulsion Ltd., West Sussex, GB;
Abstract
Apparatus and method for propelling a watercraft. An oar has a blade and a shaft, the blade having a front side and a back side, the shaft having a longitudinal axis. The blade includes a plurality of openings which pass from the front side to the back side of the blade. In some cases, the openings are slit shaped openings oriented substantially perpendicularly to the longitudinal axis of the shaft. In other cases, the smallest lateral dimension of each opening is 5 mm or less. The openings may influence the flow around the blade so that the blade is more efficient, and thus may produce more useful work in moving a boat than a solid blade with no openings.