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:
Aug. 15, 1989
Filed:
Jul. 22, 1988
Applicant:
Inventor:
John G Walker, St. Mellion, Cornwall, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
114103 ;
Abstract
Wingsail configurations for multi element wingsails for maintaining full stall for maximum speed in running downwind in which the trailing edges of at least a pair of flap elements of a multi element structure are maintained in the convergent configuration so that in the deflected position of the flap there is a leeward progression to deeper stalling.