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:
Nov. 19, 1996
Filed:
Jan. 31, 1995
John G Walker, St Mellion, Cornwall PL12 6RS, GB;
Other;
Abstract
A wingsail assembly comprising a thrust wing having a leading aerofoil (1) and a trailing aerofoil (2), the leading and trailing aerofoils being deflectable with respect to one another to adopt a cambered configuration, characterised in that the trailing aerofoil has a cross-sectional shape with a relatively flat leading edge interconnecting relatively strongly curved corners (5,6) on opposite sides of the aerofoil, such that for each direction of relative deflection between the leading and trailing aerofoils the corner more remote from the trailing edge of the leading section provides an aerodynamic leading edge for the trailing section and the corner more proximate the trailing edge of the leading section provides an inner wall for a convergent slot. The assembly is mounted on a vessel via a bearing having an axis passing through the trailing section. A tail aerofoil trims the assembly and is mounted on a boom extending from the trailing section.