Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7352074 | System for producing hydrogen making use of a stream of water A system for producing hydrogen from water, making use of a stream of water such as a gulf stream or tidal stream, includes a number of submerged modules, each having a turbine that can be driven by the stream of water. The turbine is coupled to a generator for gene... | 04/01/2008 |
| 7011287 | Motor vehicle pinch valve A pinch valve for automotive applications, wherein the pinch valve comprises a flexible hose, an extension seat cradling the flexible hose, a pinching extension aligned opposite the extension seat on the outside of the flexible hose, and a valve actuator that is ope... | 03/14/2006 |
| 6948997 | Elastic drive motor with force isolation Disclosed is a method and system for providing an elastic drive mechanism in which the compressive force and torque created by the twisting of an elastic member used to power an aircraft are isolated from the fuselage, and specifically isolated from the flight contr... | 09/27/2005 |
| 6926577 | Underwater device and method of play A device for recreational and educational use includes a substantially cylindrical section having a first end, and a second end. A cavity is disposed within the substantially cylindrical section to receive fluid when the device is immersed in a body of fluid. The su... | 08/09/2005 |
| 6921315 | Toy vehicle having an integral pump assembly An integral pump assembly may be used to power a toy vehicle. The pump pressurizes fluid stored within the pressure vessel. The pressurized fluid within the pressure vessel drives the engine that powers the toy vehicle until the stored pressurized fluid has been dep... | 07/26/2005 |
| 6280284 | Toy submarine with counter rotating propellers A toy submarine consisting of three components. Two of the components are an injection molded thermoplastic and the other is an ordinary rubber band. The plastic is slightly positively buoyant in typical tap water. The first molded component is the tailpi... | 08/28/2001 |
| 6093076 | Water propelled toy torpedo A water propelled toy torpedo including a main housing having an open forward end and an open rearward end. A battery pack is disposed within the main housing inwardly of the open forward end. A battery cap is disposed within the open forward end of the h... | 07/25/2000 |
| 4919637 | Model submarine A model submarine has an inherent "fail safe" feature, so that the submarine (if submerged) will rise to its periscope depth in the event the submarine encounters a stationary object, or in the event a power failure occurs. Power is supplied by a single s... | 04/24/1990 |
| 4879833 | Shark diverting apparatus A shark diverting apparatus is set forth wherein a self-propelled torpedo-like device is arranged with a self-contained power source including a signal generator for generating a signal for attracting sharks. A flotation collar is fixedly secured about a ... | 11/14/1989 |
| 4826465 | Model submarine A diving model submarine utilizes an automatic depth level control mechanism, water jet propulsion, a water powered aspirator for ballast tank evacuation, hydraulic control of steering, diving plane attitude, and ballast tank valve action. The model divin... | 05/02/1989 |
| 4673370 | Toy four-wheel-drive climbing vehicle operable on land, over water, and under water Pontoons along both sides of the vehicle can be filled with either air or water, at the user's preference. When the pontoons are filled with air the vehicle floats in water and is driven along the water surface by a propeller and also by a tread drive. Wh... | 06/16/1987 |
| 4274223 | Water toy A water toy or tube toy propelled by a jet of water includes an elongated body having an internal cylinder for containing a variable volume of water therein. A piston is mounted for slidable movement in the cylinder and is biased in one direction to decre... | 06/23/1981 |
| 4241535 | Submersible toy A submersible toy comprised of an upper body portion and a watertight lower body portion coupled to said upper body portion, the upper body portion having a first horizontal rudder on the periphery thereof and a float disposed inside thereof, the lower bo... | 12/30/1980 |
| 4179841 | Toy object that propels forward, submerges and surfaces A toy object such as a submarine or the like with a ballast chamber and an air chamber dimensioned such that normally in a static position the body floats in water with only a small portion of the body extending out of the water. The ballast chamber is fi... | 12/25/1979 |
