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:
May. 12, 2020
Filed:
Aug. 29, 2018
John H. Keller, Newburgh, NY (US);
John Wallace Keller, Portland, OR (US);
John H. Keller, Newburgh, NY (US);
John Wallace Keller, Portland, OR (US);
Other;
Abstract
Watercraft hulls and parts thereof are disclosed which improve hydrodynamic performance for yachts, sailboards, and other craft. Drag at the transition from displacement mode to planing mode may be reduced to be the same or less than the minimum drag experienced in planing mode. Exemplary embodiments may include a bow with a center planing surface and tunnels to either side. The bow tunnels may each end in a step. At least part of the center planing surface may be cambered. A spoiler and/or interceptor may be provided at an aft end of a camber of a planing surface. For some hulls, the bow is followed by a main lift surface which is followed by a back lift surface (from stem to stern). In the back lift surface behind the main lift surface, a tunnel surface may be provided to add longitudinal stability.