Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 3968855 | Seismic marine gun assembly The underwater gun assembly of this invention has an acceleration barrel and a firing gun. Percussion-initiatable cartridges are carried to the acceleration barrel by a stream of water. Each cartridge has an outside diameter which is nearly equal to the i... | 07/13/1976 |
| 3952833 | Method and apparatus for generating pressure waves in water by implosion A gas exploder consisting of a rigid cylindrical lower member and a rigid upper member telescoping therein to form a chamber in which a gas explosion can take place is supported beneath the surface of the water from a float by means of low resilience rope... | 04/27/1976 |
| 3951231 | Seismic exploration A marine acoustic seismic generator carried on the deck of a boat is coupled to a body of water in which the boat floats by a column of water in a pipe extending between the generator and the body of water. Post explosion oscillations are damped or termin... | 04/20/1976 |
| 3948489 | In-line mixer for fluids For the continuous mixing of fluid process materials or gases as they flow uninterrupted from a point of initial mixing to a discharge end and processed by means of intense vaporous cavitation, use is made of a resonant tube section having an entrance end... | 04/06/1976 |
| 3937296 | Firing device, explosive charge, method, and system, for seismic exploration A firing device is provided for initiation of delay type seismic charge assemblies, which comprises means for conveying and guiding the charge assemblies, in the seismic test zone, into electrical initiation contact with one of any number of available pai... | 02/10/1976 |
