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 |
| 6994164 | Method for enhancing the stability of a water sensitive, reactive subterranean formation The current invention provides a method for enhancing the formation stability of water sensitive, reactive formations penetrated by a wellbore. The method of the current invention provides an accurate evaluation of the impact of cementing fluids on water sensitive, ... | 02/07/2006 |
| 6979366 | Methods of cementing pipe in well bores and low density cement compositions therefor The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficien... | 12/27/2005 |
