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US Propulsion Patents 1974-1989 All the patents listed are either alternative propulsion devices in some form or have been mentioned by patents of alternative propulsion devices. To view copies of the original patents you must click the images button in the menu.  (NOTE: You may have to install a program to be able to view the copies of the original patents. To Download it CLICK HERE.) |
| Patent # | Inventor's Name | Patent Date MM/DD/YYYY |
Title |
| 3807244 | Estrade | 04/30/1974 | Device For Transforming Kinetic Energy |
| 3810394 | Novak | 05/14/1974 | Centrifugal Mechanical Device |
| 3863510 | Benson | 02/04/1975 | Inertia Engine |
| 3889543 | Mast | 06/17/1975 | Propulsion System |
| 3897692 | Lehberger | 08/05/1975 | Centrifugal Propulsion Drive And Steering Mechanism |
| 3916704 | Gaberson | 11/04/1975 | Vibratory Motion |
| 3968700 | Cuff | 07/13/1976 | Device For Converting Rotary Motion Into A Unidirectional Linear Motion |
| 3979961 | Schur | 09/14/1976 | Method And Apparatus For Propelling An Object By An Unbalanced Centrifugal Force With Continuous Motion |
| 3998107 | Cuff | 12/21/1976 | Device For Converting Rotary Motion Into A Unidirectional Linear Motion |
| 4087064 | Knap | 05/02/1978 | Orbital Propulsion Apparatus |
| 4095460 | Cuff | 06/20/1978 | Device For Converting Rotary Motion Into Unidirectional Motion |
| 4238968 | Cook | 12/16/1980 | Device For Conversion Of Centrifugal Force To Linear Force And Motion |
| 4242918 | Srogi | 01/06/1981 | Mechanical Propulsion System |
| 4261212 | Melnick | 04/14/1981 | Unidirectional Force Generator |
| 4347752 | Dehen | 09/07/1982 | Apparatus For Converting Rotary Motion To A Rectilinear Force |
| 4398431 | Melnick | 08/16/1983 | Mechanical Power Transmitting System |
| 4408740 | Kleber | 10/11/1983 | Apparatus For Acceleration-Free Mounting Of A Body In A Spacecraft |
| 4409856 | De Weaver | 10/18/1983 | Propulsion System |
| 4450141 | Linde | 05/22/1984 | Centrifugal Reaction Chamber |
| 4479396 | De Weaver | 10/30/1984 | Propulsion System |
| 4577520 | Colla | 03/25/1986 | Mechanical Propulsion System |
| 4579011 | Dobos | 03/01/1986 | Propulsion Apparatus |
| 4631971 | Thornson | 12/30/1986 | Apparatus For Developing A Propulsive Force |
| 4663932 | Cox | 05/12/1987 | Dipolar Force Field Propulsion |
| 4674583 | Peppiatt | 06/23/1987 | Impulse Drive |
| 4712439 | North | 12/15/1987 | Apparatus For Producing A Force |
| 4726241 | Melnick | 02/23/1988 | Continuous Force And Impact Generator |
| Unknown | Peterson | 05/17/1988 | Apparatus For Producing A Directional Unit Force |
| 4770063 | Mundo | 09/13/1988 | Universal Propulsion Power plant And Impulse Drive Unit For Self-Propelled Vehicles |
| 4784006 | Kethley | 11/15/1988 | Gyroscopic Propulsion Device |
| 4788882 | Fulop | 12/06/1988 | Flywheel |
| 4801111 | Rogers et al | 01/31/1989 | System For Propulsion And Positioning Of A Transitory Object |