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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7328906 | Stroller apparatus A stroller apparatus for exercising the arms and a portion of an upper torso of a user includes a seat to receive and support a rider. A frame is coupled to the seat to support the seat in an elevated position above a ground surface. A plurality of wheels is coupled... | 02/12/2008 |
| 7303202 | Apparatus for the transfer of linear human power to a rotating member An apparatus for the transfer of linear human power to a rotating member is disclosed, which is adaptable to exercise equipment, wheeled chairs, scooters, bicycles, tricycles, etc. The hands of the operator apply the power during the downward stroke of an up-and-dow... | 12/04/2007 |
| 7210543 | Reversible power takeoff driven post hole digger A reversible post hole digger apparatus powered by a power takeoff shaft includes a transmission providing a reverse gear and a forward gear in a single housing. The apparatus has a power head disposed between a shaft connected to the power takeoff and an output sha... | 05/01/2007 |
| 7011322 | Automatic transmission with stepless, continuously variable speed and torque ratio An automatically and smoothly continuously variable transmission, particularly for a bicycle, for transmitting input mechanical energy from a crank to the drive wheel. A ratchet, having an oscillatory, alternating motion member and a continuous rotary motion member,... | 03/14/2006 |
| 6942234 | Hand-powered vehicle A wheeled apparatus is provided that converts alternate back and forth longitudinal motion supplied by the arms of a user to a pair of members into rotary motion that is used to drive the apparatus forward. The members move in opposite direction pulling and releasin... | 09/13/2005 |
| 6932370 | Human-powered, ride-on vehicle A human-powered, ride-on vehicle, includes a main longitudinal frame member having a steering/drive mechanism mounted thereon for oscillating movement; a driven rear wheel having an axle, a rear sprocket operatively fixed to the rear wheel for coastable engagement t... | 08/23/2005 |
| 6900610 | Apparatus, methods, and articles of manufacture for a terminator positioning system The invention is a system for controlling the position of a movable member moved by a prime mover by monitoring the position of the movable member; generating position information based upon this monitoring; and controlling the prime mover based upon the position in... | 05/31/2005 |
| 6718839 | Method and apparatus for facilitating speculative loads in a multiprocessor system One embodiment of the present invention provides a system that facilitates speculative load operations in a multiprocessor system. The system operates by maintaining a record of speculative load operations that have completed at a processor in the multiprocessor sys... | 04/13/2004 |
| 6572129 | Dual power recumbent tricycle A recumbent tricycle which includes a propulsion system which includes a combination of foot and arm power for propulsion. Pedals are operated with the rider's legs. Handles are also connected to the drive mechanism, with the handles pulled back and pushe... | 06/03/2003 |
| 6520525 | Folding tricycle A folding tricycle, maximizing the exercise effect by allowing a user to pedal the tricycle while standing up on the pedals, as well as being easy to move and carry by being folded to be of a small size, is disclosed. The folding tricycle has a running un... | 02/18/2003 |
| 6406393 | Pressing device of transmission belt of electric cart A device is designed to press the transmission belt of an electric cart and is formed of a pivot set, a first swiveling member, a second swiveling member, a first wheel set, a second wheel set, and an elastic element. The first and the second swiveling me... | 06/18/2002 |
| 5272928 | Apparatus for the transmission of power to a rotating member The provision of power by the human body to bicycles, tricycles, exercise equipment, wheeled chairs or the like is effected using a hand-operated lever (35) and/or a pair of pendulums (23). The hand-operated lever is pivoted about an axle (33) on a frame ... | 12/28/1993 |
| 4912996 | Motion converting means The invention relates to an assembly for converting the reciprocating motion of at least one piston of a combustion engine into an oscillating rotary motion of at least one shaft, the piston being coupled with the shaft via a flexible band connected with ... | 04/03/1990 |
