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 |
| 4772380 | Chute feeder for chip wringer A mixture of cooling liquids and solid pieces of waste from machine tools drop onto an inclined bottom wall of the upper, generally vertically disposed section of an inverted, generally Y-shaped feed chute. One of the two lower, diverging chute sections e... | 09/20/1988 |
| 4618431 | Method for stabilizing the relationship between the filtering unit and a filter feed pump A method of reducing the effects of fluctuating fluid pressure differential between the inlet and the outlet of a filtering unit operating in a system for filtering metal contaminants from a lubricating coolant and for recycling a constant volume flow of ... | 10/21/1986 |
| 4612116 | Backwashable filtering apparatus and novel filter element therefor A plurality of filter housing are arranged around a hollow hub section the interior of which is divided into an inlet chamber for receiving fluid under pressure to be filtered, an outlet chamber for receiving filtered fluid, and a backwash chamber that is... | 09/16/1986 |
| 4549893 | Hot cullet handling apparatus A plurality of open trenches or sluices is suspended from the underside of the forming floor of a glass factory to register with the lower, discharge ends of hot gob reject or cullet chutes. Each sluice is suspended with one end higher than the other, and... | 10/29/1985 |
| 4482461 | Backwash control for constant volume-pressure filtration system In a system having a fluid filter that is automatically backwashed each time the differential pressure thereacross reaches a predetermined value, the desired base rate at which the drop across the filter should increase during its initial filtering sequen... | 11/13/1984 |
