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"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 6862882 | Pneumatic booster There is provided a pneumatic booster having an ejector, which achieves space-saving and enables easy piping. An ejector 4 is provided within a constant-pressure chamber 3 formed in an outer shell 2. A connecting pipe 19 communicat... | 03/08/2005 |
| 6735942 | Method, computer program, and control unit for operating a vacuum reservoir provided in an internal combustion engine Described are a method, a computer program, and a control unit for operating a vacuum reservoir provided in an internal combustion engine of a motor vehicle for a servo booster or power-assist unit of the internal combustion engine, which is coupled to an intake man... | 05/18/2004 |
| 6301883 | Vehicle brake booster with supplemental vacuum assist A brake booster provides additional boost capacity without unduly increasing booster size and weight by providing a vacuum pump connected so as to add its additional vacuum capacity to that of the normal vacuum source when activated in response to sensed ... | 10/16/2001 |
| 5515676 | Vacuum pump motor control apparatus and method of operation thereof An apparatus and method for controlling an electrically driven vacuum pump (16) for a motor vehicle provides that below a predetermined level of vacuum (approaching atmospheric pressure) the pump (16) runs at a first speed, and above that level of vacuum ... | 05/14/1996 |
| 4865291 | Method and apparatus for deicing a leading edge An airfoil deicer and method for deicing an airfoil wherein the deicer has an outer skin having an elevated modulus of elasticity and a means for introducing a small deflection into the outer skin thereby creating substantial chord-wise tension in the out... | 09/12/1989 |
| 4763893 | Pumping unit for therapeutic hand exerciser The present invention provides a pump assembly which is used to control the amount of extension and flexion of an inflatable pouch which is used to exercise the fingers, hand, or other limb of a patient. A diaphragm pump is provided together with a rotata... | 08/16/1988 |
| 4224791 | Arrangement for generating and making available a vacuum for vehicular auxiliary power systems An arrangement for generating and making available a vacuum for an auxiliary power system of a vehicle, such as a brake booster, comprises a throttle disposed in the intake system of an internal combustion engine between the carburetor and the engine, a v... | 09/30/1980 |
| 4193264 | Pressured fluid supply system A vacuum motor operatively connected to a slave cylinder operates same via pressure differential variations across a reciprocatable vacuum motor piston to pump working fluid from a reservoir to an accumulator through two one way valves. The pressure diffe... | 03/18/1980 |
| 4100976 | Pneumatic impact drilling tool A pneumatically operated impact drilling tool for earth drilling, includes a reciprocating hammer, an anvil positioned under the hammer and a feeder tube extending through the hammer and at least partially through the anvil. The drilling tool is connected... | 07/18/1978 |
| 4043123 | Negative pressure generating system for internal combustion engine powered vehicles A negative pressure generating system for an internal combustion engine powered vehicle, comprising a brake booster incorporated in the vehicle and adapted for an increase in braking power, an air cleaner for cleaning air to be supplied to the internal co... | 08/23/1977 |
| 3940937 | Intensifier An intensifier for use with pressurized fluids requiring additional pressure boosting to assume higher presures includes an elongated housing with differential diameter internal bore of which large end is closed by a cap with fluid port therein and the op... | 03/02/1976 |
