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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6994122 | Heald frame for weaving machine A heald frame for a weaving machine includes stops (15, 16) made of a material with shock-absorbing properties associated with the ends of the healds (10). A gap is provided between the heald ends and the stops, such gap ensuring that the healds can be... | 02/07/2006 |
| 5435229 | Disposable preload tool for vacuum actuators A fluid pressure actuator assembly (44) adapted for use with a valve member (42) is disclosed, the actuator being of the type comprising a housing assembly (50), and an axially moveable diaphragm assembly (56). A linkage member (48) is operably associated... | 07/25/1995 |
| 5376135 | Adjustable hydraulic damper An adjustable hydraulic damper involves a piston member operating within a hydraulic cylinder where the hydraulic cylinder wall is adjustably deformed to vary the annular space between a piston head and the inside cylinder wall through which hydraulic flu... | 12/27/1994 |
| 4785719 | Diaphragm for high pressure pumps, compressors or the like Diaphragms for pumps, compressors and the like are provided with a substantially flat planar end face confronting the media being pumped or compressed and have an outer peripheral zone for clamping the circumference of the diaphragm in the pump or compres... | 11/22/1988 |
| 4462301 | Bourdon tube actuator A Bourdon tube apparatus is provided for monitoring the pressure of a fluid pressure source. The output of the Bourdon tube is translated into a curvilinear motion which is transmitted to a linearly movable actuator valve or indicator. To enhance the forc... | 07/31/1984 |
| 4374487 | Pilot with cantilevered spring A fluid actuated pilot assembly employing a cantilevered spring member which is mounted to apply a force to a sensing piston in opposition to the force applied by the sensed fluid pressure. Upon the occurrence of the pressure of the fluid being sensed exc... | 02/22/1983 |
| 4281586 | Pneumatically operated adjusting device A pneumatically actuated adjusting device, particularly for throttle flap adjustment on mixture-compressing combustion engines, with a diaphragm held between a housing upper portion and a housing lower portion. This diaphragm forms a vacuum-charged workin... | 08/04/1981 |
| 4163543 | Air control valve An air control valve for a vehicle emissions control system has an inlet connected to the output of the vehicle air pump, a first outlet connected to exhaust injection passages in cylinder head, and a second outlet connected downstream into the exhaust ma... | 08/07/1979 |
