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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 |
| 7357152 | Releasable non-return valve The invention relates to a releasable non-return valve, in which a connection between a working chamber and a connector chamber may be closed by a non-return piston and opened by the opening movement of a release piston which may be pressurized with a release pressu... | 04/15/2008 |
| 7318708 | Check valve for a submersible turbine pump The present invention provides a submersible turbine pump (STP) comprising a check valve located within a hydraulics cavity, wherein the STP provides the ability to depressurize the hydraulics cavity by relieving a pressure differential between an inlet side and an ... | 01/15/2008 |
| 7284566 | Valve arrangement for guiding a liquid against a gas pressure gradient Valve arrangement for guiding a liquid against a gas pressure gradient. The valve arrangement includes first, second and third pressure areas connected in series. An intake opens into the first pressure area. An outlet opens into the third pressure area. Flow check ... | 10/23/2007 |
| 7240694 | Flow control valve for refrigeration system A flow control valve includes a valve body defining fluid inlet and outlet sections interconnected by a connecting port. A valve unit is disposed in the valve body and is operably connected to an actuator to be moved thereby for opening and closing the connecting po... | 07/10/2007 |
| 7228781 | Hydraulic control in a hydraulic system, especially for the operation of scrap cutters The invention relates to hydraulic control in a hydraulic system for the operation of a machine tool such as a press for processing material of a certain type, especially for the operation of the scrap cutters. Said control allows for impact attenuation and combined... | 06/12/2007 |
| 6935371 | High capacity globe valve A high flow globe valve with a body defining an interior cavity in communication with a first and second fluid passages. A tubular throttling cage is offset in the cavity away from the second fluid passage and has an open end in communication with the first fluid pa... | 08/30/2005 |
| 6915632 | Actuator for a valve, in particular a turbine valve An actuator includes a valve spindle, for adjustment of an opening position for a valve and a drive piece for the valve spindle. The drive piece is connected to the valve spindle, by a storage device, which may be pre-tensioned to a particular pre-tensioned value du... | 07/12/2005 |
| 5492150 | Combination control valve, particularly suitable for thermoelectric power plant A combination control valve wherein a seal directed towards the valve exterior is achieved by a double gland which straddles a lantern sleeve with an intermediate vent and is pressed axially between the stem and guide for the main valving member by preloa... | 02/20/1996 |
| 5119859 | Steam governing valve A steam governing valve includes a valve body constituting a main valve together with a main valve seat formed on a casing body and having a smaller valve seat inside thereof, a valve rod movable in the valve body in an axial direction of the valve and co... | 06/09/1992 |
| 5113902 | Control valve for media in vapor or liquid form A control valve assembly having spindle actuation for media in vapor or liquid form includes a main valve having a main valve seat. A control valve has a main throttle body cooperating with the main valve seat for opening and closing the main valve. The c... | 05/19/1992 |
| 4928733 | Steam valve with variable actuation forces A valve includes a device for reducing the force required beyond cracking, thereby reducing the size of actuating equipment. A balance chamber includes two effective diameters. A smaller diameter is operative during cracking, in order to maintain positive... | 05/29/1990 |
| 4892118 | Silent valve Slotted, fluid-flow dividing therefor employed in a fluid valve not only to reduce noise but also to shift the frequency spectrum of the noise energy. The slotted therefor is formed integrally with the valve seat. Additionally, the cross-sectional shape o... | 01/09/1990 |
| 4711263 | Double-acting valve system for underwater breathing or the like A valve for regulating the through-flow of a fluid from an inlet (10) to an outlet (11), especially for regulating a gas flow from a place (4) with a higher pressure than the ambient pressure, the valve (2) being arranged to be opened by an operating mean... | 12/08/1987 |
| 4679769 | Steam turbine control valve for cyclic duty A control valve for cyclic duty steam turbines having a one piece bonnet configuration which has been designed to minimize the affects of and withstand expected cyclic stresses during hot, warm and cold startup conditions of turbines utilized for peak loa... | 07/14/1987 |
| 4534380 | Gas regulator valve A gas regulator valve comprising a housing with an inlet and an outlet and a partition wall or the like, which divides the housing into two chambers. The inlet communicates with the first chamber and with the outlet via a main valve. Between the two chamb... | 08/13/1985 |
| 4304264 | Solenoid actuated valve An improved solenoid operated valve utilizing a pilot valve nested within a main valve having a dual mode capability, fluid pressure assisted or solenoid powered, wherein the main valve's stem section is mounted within a tubular pilot armature and stem fo... | 12/08/1981 |
| 4176688 | Check valve A check valve with pilot actuation for hydraulic systems has a valve housing with a main bore and main seat, a main valve member movable in the main bore between a closed position and an open position and having an additional inner bore with a conical mou... | 12/04/1979 |
| 4022247 | Balanced valve with pressure sensing means An improved balanced valve includes a radial arrray of pressure sensing passages in the main disc which extend from the axial opening to a peripheral region of the disc below the seating surface of the disc such that when fluid flow reverses, as when ther... | 05/10/1977 |
| 4002319 | Bi-directional pressure balanced valve An improved bi-directional pressure balanced valve includes a deflecting device at the axial opening in the closure disc to prevent an over balancing of the main valve disc assembly when fluid flow from the first flow passage impinges on the axial opening... | 01/11/1977 |
| 3987818 | Safety trip valve for steam or gas turbines with means to assure controlled opening from the closed position A safety trip valve for interrupting the flow of working fluid to fluid operated machinery is actuated to closed position by unbalanced forces produced thereon by the pressure of the working fluid on occurrence of adverse operating conditions. After closu... | 10/26/1976 |
