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| Number | Title | Issue Date |
| 4702272 | Valve device for increasing the fuel economy and reducing the emissions from an internal combustion engine Valve device includes a valve chamber containing three spherical members in stacked relation which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion e... | 10/27/1987 |
| 4267870 | Screw fastener with multi-point wrenching head and locking capabilities A screw fastener with a multi-point wrenching head and locking capabilities characterized by an annular bearing collar having at least one flat surface on its periphery adapted for engagement with the locking tab of a locking strip.... | 05/19/1981 |
| 4172438 | Valve device and system employing same Valve device includes a valve chamber containing three spherical members of different hardnesses in stacked relation therein, which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasol... | 10/30/1979 |
| 4024846 | Valve device and system employing the same Valve device and system employing same for providing variations in air flow to the manifold of an internal combustion engine in accordance with the engine vacuum. The valve device includes a plurality of resiliently deformable spherical members which are ... | 05/24/1977 |
