Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6918346 | Marine craft towed by a kite-type canopy A marine craft includes a floating body, elements adapted to generate a center-board effect, in particular a center-board projecting beneath the floating body, and a rigging. The rigging includes at least a directional kite forming a canopy and a series of sheets co... | 07/19/2005 |
| 6189471 | Sailboats and methods The invention provides various improved sailboats and methods for their use. In one exemplary embodiment, a sailboat comprises a hull and a deck that is operably attached to the hull. The deck has a longitudinal axis extending along its center. A mast is ... | 02/20/2001 |
| 5996519 | Sailboats and methods The invention provides various improved sailboats and methods for their use. In one exemplary embodiment, a sailboat comprises a hull and a deck that is operably attached to the hull. The deck has a longitudinal axis extending along its center. A mast is ... | 12/07/1999 |
| 5988086 | Sailboat and methods The invention provides various improved sailboats and methods for their use. In one exemplary embodiment, a sailboat comprises a hull and a deck that is operably attached to the hull. The deck has a longitudinal axis extending along its center. A mast is ... | 11/23/1999 |
| 5485800 | Resilient stand-up device for bearing block A resilient stand up device for a pulley or block includes a hollow rigid fitting between the block and a support. The fitting has open jaws at each end, with one set of jaws disposed at right angles to the other, with attachment pins extending between th... | 01/23/1996 |
| 5170734 | Wind propelled craft with multi-function rudder control arm A unique wind propelled craft including a body, a deck which forms the upper surface of the body, a sail for propelling the body by wind forces, a rudder for maneuvering the craft, and a rudder control assembly for controlling and adjusting the position o... | 12/15/1992 |
| 5070802 | Vang assembly for sailboats A vang assembly is provided for manipulating a sailboat boom. The vang assembly includes a mechanical vang in the form of a resiliently flexible elongate column provided with an adjustment means in the form of a soft vang for arcuately flexing the mechani... | 12/10/1991 |
| 4852507 | Sail-wing and controls for a sail craft An amphibious sail craft with a sail-wing system is disclosed, including a rotatably mounted mast, a rotatable boom pivotally mounted to the mast, and a sail-wing mounted to the boom and rotatable with the boom about horizontal and vertical axes for varyi... | 08/01/1989 |
| 4819574 | Rudderless sailboat This specification discloses a rudderless sailing craft with two sails of approximately equal area and a vertical keel affixed to the hull near a balance point between the two sails. The central part of the craft between the two sails serves as an unobstr... | 04/11/1989 |
| 4799443 | Swing sail boat A novel rigging for a sailboat is disclosed in which the mainsail is mounted between a luff boom and a foot boom, the luff boom being attached to the top of the mast by a fitting that allows rotation at least about a vertical axis parallel to the mast and... | 01/24/1989 |
| 4788924 | Sailing system A sail assembly for use with a hull, comprising a base and a mast mounted on the base for rotation about a vertical axis, the mast also extending at a mast tilt angle with respect to the vertical. A sail structure, which includes a sail frame and a sail f... | 12/06/1988 |
| 4760812 | Miniature pulley block assembly A pulley block system for releasable attachment to a sheet end and requiring no overhang beyond the sheet end. There is a first pulley block assembly having planar, parallel, spaced side portions and including a first pulley roller rotatably mounted betwe... | 08/02/1988 |
| 4563967 | Sport sailboat steering and balancing arrangement A monohull, sport, sailing boat with fixed mast, centerboard, and rudder, cat-rigged with righting moment provided by manipulation of a trapeze attached high on the mast by a support line of adjustable length. Steering lines running forward from a thwarts... | 01/14/1986 |
| 4406240 | Kicking strap for sailing-boats A kicking strap for sailing-boats comprises a tackle with two multifold blocks (8, 9) connected and supported by means of two telescopic pipes (15, 16). The pipes are connected by a spring counteracting their joining, e.g. a pneumatic spring (21) secured ... | 09/27/1983 |
| 4382417 | Glider sail assembly A glider sail assembly comprises a center boom with a fore end for directing into a wind and a mount for connecting the center boom generally horizontally at the top of a mast and directed at an upward angle towards the fore end. Each of two side booms ha... | 05/10/1983 |
| 4138962 | Device for controlling the swinging of the boom of a sailboat A device for controlling the swinging of the boom of a sailboat, comprises a line fixed at its opposite ends to opposite gunwales of the boat and passing intermediate its ends about a sheave carried by the boom. The sheave can be non-rotatable, in which c... | 02/13/1979 |
| 4044702 | High efficiency aerodynamic sail system for boats, and method for sailing A high efficiency aerodynamic sail system for boats comprises a triangular fabric sail pivotally suspended at its head from the apex of a tripod mast structure such that air impinging upon the luff of the sail is free from the turbulent wake of any upwind... | 08/30/1977 |
| 3985090 | Sport boat A wind-propelled sailboat having a main hull and an outboard pontoon or outrigger, a mast mounted upon the main hull and a sail removably connected to the top of the mast, the sail being controlled for propulsion of the boat by a manually manipulated leve... | 10/12/1976 |
