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 |
| 8172272 | Aircraft fuel pipe coupling A coupling for fuel pipe includes a pipe end fitting, which includes a male outer surface including a groove and a female inner surface including a groove. The coupling includes a double-walled socket including a female outer socket and a male inner shaft. The pipe ... | 05/08/2012 |
| 6648376 | Flexible sectioned arm with internal overbending-prevention sleeves A flexible, sectioned plastic arm for a showerhead comprises a series of interconnected ball-and-socket (B&S) sections (10) with a proximal (shower pipe) end piece (12) and a distal (showerhead) end piece (14). Each B&S section has a proximal (cup or sock... | 11/18/2003 |
| 6478499 | Adjustable corner fitting An adjustable corner fitting suitable for use with a cable raceway duct system includes first and second interconnectable arcuate base members and first and second interconnectable covers. One of the base members has at least one arcuate slot and the othe... | 11/12/2002 |
| 6123367 | Drainage system for vehicle holding tanks A drainage system for emptying a holding tank of a vehicle includes upright telescopic members for attachment to the vehicle outlet. Ninety degree elbows are joined in a swiveled manner and are carried by the upright tubular members and are in communicati... | 09/26/2000 |
| 5947530 | Live swivel coupling Live swivel coupling has a hollow first housing and a hollow second housing, each of which is open on opposing ends in a main axial direction. The first has a generally radially symmetrical inner surface and an indentation in the inner surface, and the se... | 09/07/1999 |
| 5944364 | Live swivel coupling device Live swivel coupling device has a hollow first housing and a hollow second housing, each of which is open on opposing ends in a main axial direction. The first has a generally radially symmetrical inner surface, an indentation in the inner surface, and an... | 08/31/1999 |
| 5848812 | Multi-adjustable air conduit system with differential sealing An air conduit system (10) has a male air tube (22), a plurality of annular gaskets (26, 28, 30) around the male air tube (22), and a female air tube (24) receiving the male air tube (22) and engaging the gaskets (26, 28, 30) in sealing relation. The inte... | 12/15/1998 |
| 4836581 | Device for making a sealed connection The invention relates to a device for making a sealed connection of adaptable length suitable for interconnecting two pipes whose axes are not necessarily in alignment. The device in accordance with the invention comprises a flange placed on each pipe wit... | 06/06/1989 |
| 4180092 | Center pivot construction for center pivot sprinkler The present invention discloses an improved center pivot for a self-propelled center pivot irrigation system. The preferred embodiment is characterized by a vertical pivot pipe supported for rotational movement at both the upper and lower extremities ther... | 12/25/1979 |
| 4071269 | Flexible piping joint A flexible piping joint in the form of a fluid-tight coupling and sealing apparatus for two tubes having high pressure fluid flowing therethrough, the joint having angular, axial and rotational flexibility and comprising a metallic, resilient annular seal... | 01/31/1978 |
