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 |
| 7357073 | Drive unit and drive method for press A press drive unit and press drive method are provided which decrease the cycle time of a press to improve its productivity, enable use of small-sized, inexpensive presses and provide improved product quality. To this end, the press drive unit comprises a drive shaf... | 04/15/2008 |
| 6805045 | Press production series with offset drive In a press production series for massive forming with a toggle drive for driving a ram, varying stroke speeds of the ram motion are attached by adjustment of cogwheels of an planetary gear system having fixed connecting dimensions. Uniform machine frames can thus be... | 10/19/2004 |
| 6520075 | Double action hydraulic press A high precision, all-purpose, double action hydraulic press, which can control the speed, position, and parallelism of each slide, can conduct mold exchanges easily, and prevent the breakthrough phenomenon is provided with an outer slide 4, an inner slid... | 02/18/2003 |
| 6368046 | Modulation of ejector pumps to provide uniform and controllable ejector speed during ejector stroke for articulated trucks and the like having ejector type dump mechanism A material eject system includes an ejector mounted to a bed of a vehicle which is movable between a rear end and a forward end of the bed for ejecting material from the bed. The ejector is powered by a cylinder having different fluid volumes depending on... | 04/09/2002 |
| 6128987 | Hydraulic press for forming metal plates A hydraulic press has closed loop feedback control on a slide, a slide pad and bolster cylinders. Hydraulic cylinders actuating various components of the press are controlled according to ideal position estimates to produce consistent and precise pressing... | 10/10/2000 |
| 5832816 | Ram driving device and press machine using same A ram driving device for a press machine having: a ram; a horizontal drive axle (33) rotatably provided horizontally in a frame (3) of the press machine; a motion converting mechanism (35, 63, 83) associated with the horizontal drive axle, for converting ... | 11/10/1998 |
| 5698240 | Compression molding apparatus A compression molding apparatus adaptable for instantaneously applying a large pressurizing force in the final stage of compression molding having a simple design and at low cost. A gear is provided to a screw shaft for rotating through a pair of pinions ... | 12/16/1997 |
| 5018961 | Hydraulic closing unit A hydraulic closing unit, particularly for injection molding machines which process plastics material. The closing unit includes a mold clamping plate which is slidably guided on guide columns between a stationary support plate and a stationary mold clamp... | 05/28/1991 |
| 4990084 | Mold clamping system A clamping system for traversing and clamping molds in a molding machine, the clamping system including a toggle-type clamp arrangement defined by a plurality of pivotally connected links. A movable crosshead is carried on a crosshead guide, and a ball sc... | 02/05/1991 |
| 4981426 | Clamping mechanism in an injection molding machine A clamping mechanism which includes a cylinder and a piston. The diameter of the piston is less than the internal diameter of a rear chamber of the cylinder such that fluid flows around the piston when the piston moves from an open position to an intermed... | 01/01/1991 |
| 4968239 | Direct-pressure type mold clamping mechanism A motor-operated, direct-pressure type mold clamping apparatus is capable of high-speed mold closing and opening operations and of producing a required mold clamping force, without the use of a large-sized motor. In the mold opening and closing operations... | 11/06/1990 |
| 4929165 | Direct-pressure mold clamping mechanism A motor-operated, direct-pressure type mold clamping mechanism capable of high-speed mold closing and opening operations and of producing a required mold clamping force, without the use of a large-sized motor. In the mold opening and closing operations, a... | 05/29/1990 |
| 4861259 | Mold clamping device A mold clamping device is disclosed. The device includes a clamping ram, whose front end is connected to a moveable board of an injection molding machine, slidably fitted in a clamping cylinder, and a support cylinder provided in parallel to the clamping ... | 08/29/1989 |
