Did You Know...
...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7325503 | Watercraft lift A lift for a watercraft has plastic reinforcing brackets which engage in pockets in the thin-walled plastic floatation tanks of the lift and which provide mounting flanges at the top surfaces of the floatation tanks for abutment with mounting pads which connect to t... | 02/05/2008 |
| 7322868 | Water devices and methods for making and using such devices Water devices and methods for making and using such devices are described. The devices contain a main part for buoying a user's body and a part for supporting the body. The supporting part is releasably connected to the main part by a mechanism which is easily adjus... | 01/29/2008 |
| 7137349 | Kickdown catamaran A kick down and kick up catamaran assembles by hand with holes in main spar and stern spar ends receiving threaded rods extending vertically from the side-by-side hulls, secured in place with hand knobs. A bow spar with a line to the mast lifts the mast to vertical ... | 11/21/2006 |
| 7004100 | Canoe gunwale An improved canoe including a hull has sidewalls extending fore and aft and a gunwale on the sidewalls. The gunwale has longitudinal slot extending for a substantial portion of the entire hull. A canoe accessory has a thickened attachment portion for engagement in t... | 02/28/2006 |
| 6932018 | Manual hydrofoil and spar truss assembly for wind powered watercraft A simple, lightweight, manually-controlled device for stabilizing and increasing the performance of small, sail-assisted watercraft, containing a single moving part and comprising a curved spar or iako (1) joining a main hull and a single outrigger hull or am... | 08/23/2005 |
| 6932020 | Boat boarding device A boat boarding device for use in combination with the side or transom of a boat, the device hingedly connects with the boat, can be pivoted downwardly into the water, adjusted by an adjustment device for maintaining its horizontal stability, and in addition, floata... | 08/23/2005 |
| 5839384 | Multihulled partially air supported marine vehicle A multihulled partially gas supported marine vehicle that uses artificially pressurized gas cushion recesses in supporting hulls is presented. Definitions of critical bow and recess divergence angles and other parameters are made as well as other features... | 11/24/1998 |
| 5630371 | Catamaran A catamaran having two spaced apart elongated hulls joined by front and rear cross members holding the hulls in alignment, and having a trampoline extending between the cross members. Cables or wires are carried within enclosures forming side loops in the... | 05/20/1997 |
| 5564955 | Bracket for supporting an electric powered outboard motor and an electric battery relative to a marine vessel A bracket is provided for supporting an electric powered outboard motor, such as a trolling motor, and a battery relative to a small marine vessel, such as a Hobie Cat, in order to provide propulsion during becalm conditions. The motor and battery bracket... | 10/15/1996 |
| 5313908 | Car topable catamaran with collapsible frame and universal tiller/rudder-mast daggerboard mounting constructions A catamaran has a collapsible frame and a pair of elongated pontoons spacedly secured in collapsible frame. The frame includes fore and aft cross bar sub-frame members and a pair of longitudinally extending sub-frame members and a support platform support... | 05/24/1994 |
| 5042411 | Collapsible catamaran sailboat A collapsible catamaran sailboat has a trampoline and a frame. The frame comprises two spaced cross tubes each having two ends. The frame further comprises two longitudinal, spaced hulls and a mechanism for releasably attaching one end of each cross tube ... | 08/27/1991 |
| 4898111 | Catamaran sailboat user support platforms and packaged elements therefore Catamaran sailboats have their user support platforms improved to prevent the trampoline from disengaging from its support tubes by interposing a plurality of small plastic retainers having a hook-like cross-section spaced apart along the inboard side of ... | 02/06/1990 |
| 4854257 | Yacht tender/boarding vessel There is herein described an improved boarding device for swimmers, divers, and the like, in the form of an invertible catamaran vessel which serves as a yacht tender in it's upright position and as a boarding device for swimmers in it's inverted position... | 08/08/1989 |
| 4813366 | Methods and apparatus for providing an improved sailboat and hull structure therefor A catamaran and related hull configuration. The hull of the current invention has two generally curved indentations which run most of the length of the hull. Running down the center of the underside of the hull, and separating the two indentations, is a s... | 03/21/1989 |
| 4766830 | Boat, especially a catamaran, with large deck space and collapsible frame A boat, especially a catamaran, having a rectangular collapsible frame with a one-man mast stepping structure. The tubular frame is comprised of fore, aft and central sub-frame assemblies which can be collapsed so as to be easily car topable and serve as ... | 08/30/1988 |
| 4662297 | Knock-down boat A boat capable of being assembled, disassembled and transported by one individual and without any tools or special equipment. The boat comprises a superstructure which is substantially of lightweight buoyant material such as foam board, and which includes... | 05/05/1987 |
| 4653417 | Wind propelled vessel Sailboat has mast tiltable aftward as well as a thwartship when bottom of mast is shifted from central position on athwartship track. Above the track the mast connects with a pair of rigid supports which diverge toward hinged connections on opposite sides... | 03/31/1987 |
| 4637332 | Pivotal motor mount The present invention relates to a motor support for an outboard motor for use on a twin-hull sailboat or catamaran. The support has a first member which is fixedly attached to either the forward or rearward cross-bars of the catamaran and a second member... | 01/20/1987 |
| 4569301 | Utility container for catamaran sailboats An improved trampoline and a utility container for holding personal articles aboard a small catamaran sailboat, with separate internal compartments including an insulated icebox compartment. The container is shaped to fit in a location near the front of t... | 02/11/1986 |
| 4562784 | Sailing craft A sailing craft having hydrodynamically shaped catamaran hulls and tapered configuration rudder assemblies attached to each hull. Low draft keels are attached to the fore one-half bottom portions of the hull and a pitch-sensitive variable camber mast and ... | 01/07/1986 |
| 4557210 | Twin hull disassemblable rowboat The twin hull rowboat includes certain structural and functional components designed to provide a water craft which, when assembled, is compact, easily rowed, highly maneuverable and has the stability characteristics of a catamaran. When the water craft i... | 12/10/1985 |
| 4528925 | Utility container for catamaran sailboats A utility container for holding personal articles aboard a small catamaran sailboat, with separate internal compartments including an icebox compartment containing an icebox liner. The container is shaped to fit in a location near the front of the passeng... | 07/16/1985 |
| 4463699 | Sailing craft A sailing craft having hydrodynamically shaped catamaran hulls and tapered configuration rudder assemblies attached to each hull. Low draft keels are attached to the fore one-half bottom portions of the hull and a pitch-sensitive variable camber mast and ... | 08/07/1984 |
| 4348971 | Multi-hull boats An inflatable catamaran comprises a central tubular longitudinal torsion beam carrying a mast and a set of four or five cross beams secured at their centers to the longitudinal torsion beam and at their outer ends to a pair of inflatable hulls. Each hull ... | 09/14/1982 |
