Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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 |
| 6711967 | Treading type vehicle driving device A treading type vehicle driving device includes a substrate, a first transmission assembly, a second transmission assembly, a treadle structure, a gear assembly and a position limiting plate. The straight-cut gear A can move reciprocally along the trenches of the sl... | 03/30/2004 |
| 6080088 | Exercise machine The apparatus converts reciprocating motion of a rowing type exercise into single direction rotational motion of a shaft in a predetermined direction. A reciprocable arm of a rowing type exercise is pivotally mounted to a frame. A shaft, set for rotation ... | 06/27/2000 |
| 5653663 | Arm and leg powered cycle and method of use thereof A cycle that uses both arm and foot motions to drive it. Unlike other designs that connect the hand and foot movements to a single crank mechanism, the instant design uses two sets of gears that are stacked. Four straight toothed racks are positioned betw... | 08/05/1997 |
| 5542893 | Exercise machine which converts reciprocating motion to unidirectional rotational motion The apparatus converts reciprocating motion of a rowing type exercise into single direction rotational motion of a shaft in a predetermined direction. A reciprocable arm of a rowing type exercise is pivotally mounted to a frame. A shaft, set for rotation ... | 08/06/1996 |
| 5259259 | Motion converting mechanism and rotary tool A rotary tool, such as a screwdriver, in which a grip is grasped and released, so that the output shaft is rotated in the same direction during both actions comprises a motion converting mechanism wherein two sets of one-way clutch mechanisms are added to... | 11/09/1993 |
| 5176038 | Motion converting mechanism and rotary tool A motion converting mechanism wherein two sets of one-way clutch mechanisms are added to a mechanism for converting a rectilinear reciprocating motion into a rotary motion through a rack and pinion combination. The two sets of one-way clutch mechanisms in... | 01/05/1993 |
| 5007655 | Variable speed lever propelled wheelchair Disclosed is a wheelchair having a pair of levers along its opposite sides connected with sprockets on drive wheels. In one form, each lever is connected to its sprocket by a rack. The drive wheels have a clutch enabling the power stroke of the lever to d... | 04/16/1991 |
| 4941396 | Reciprocating double-ended piston The present invention relates to a reciprocating engine which has an improved reciprocating double ended piston which substantially reduces the size and weight of piston components. The double ended piston comprises a center portion between the two end po... | 07/17/1990 |
| 4915019 | Mechanism for transforming the reciprocal movement of a piston into a circular movement of a shaft Device for transforming the alternating motion of a piston into a circular motion of a shaft with the possibility of predetermining the stop time of the piston at each of the two dead centers. It is comprised of an assembly of two pistons connected by two... | 04/10/1990 |
| 4803890 | Piston/power shaft coupling The conventional crank between the power piston and the crank shaft in a reciprocating engine is replaced by a fixed length moment arm during the power stroke and a scotch yoke during the return stroke. The motion of a power piston is converted to rotary motio... | 02/14/1989 |
| 4387781 | Electrical generating system for vehicles Usually wasted kinetic energy derived from relative movements of the vehicle wheels and chassis frame is converted into usable electric energy by the operation of a simplified chassis-mounted mechanical drive operatively coupled with alternators or genera... | 06/14/1983 |
| 4249639 | Power generating apparatus Power generating apparatus comprising a float mounted on a support which is pivotally mounted to a base the support being secured to a beam extending rearwardly of the base to a vertically extending elongated structure carrying a pair of vertically moveab... | 02/10/1981 |
