Today In History
Six-year-old Robert W. Patch granted a patent for a "toy truck".
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 |
| 6966394 | Turbine generator regenerative braking system A turbine generator regenerative braking system is for an automotive or other vehicle having ground engaging wheels and an electrical energy storage device. The braking system comprises an hydraulic fluid turbine generator having an electrical power output connected... | 11/22/2005 |
| 5804934 | Power output apparatus and method of controlling the same A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked wit... | 09/08/1998 |
| 4557228 | Piston and spring powered engine The invention is an improved piston engine, either two stroke or four stroke. In one, two stroke, one cylinder embodiment, the improvement comprises two springs connecting between the piston and the base of the piston. These springs are relatively relaxed... | 12/10/1985 |
| 4532431 | Method and apparatus for producing electrical energy from a cyclic combustion process utilizing coupled pistons which reciprocate in unison Method of and device for producing electric energy from a cyclic combustion process. The device includes two oppositely disposed aligned spark ignited internal combustion engine cylinders axially spaced from each other, means rigidly connecting the piston... | 07/30/1985 |
| 4479356 | Elastomeric energy recovery system An energy recovery system for a machine, and particularly an automotive vehicle, includes an energy storage device which selectively receives energy from the prime mover for storage via a predetermined path and delivers stored energy to the prime mover lo... | 10/30/1984 |
