Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8082838 | Air spring pneumatic product rejection system A double-acting cylinder and piston mechanism comprising a cylinder (1) substantially closed at both ends by front (5) and rear (7) end walls, a piston (8) axially displaceable within the cylinder (1), a first region (6) def... | 12/27/2011 |
| 8015913 | Pneumatic cylinder for precision servo type applications A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. The pneumatic cylinder includes a piston and rod assembly with supporting components coaxially disposed and arranged to achieve a linear mechanical force in accordance with ... | 09/13/2011 |
| 7404353 | Pneumatic cylinder for precision servo type applications A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. The pneumatic cylinder includes a piston and rod assembly with supporting components coaxially disposed and arranged to achieve a linear mechanical force in accordance with ... | 07/29/2008 |
| 7374406 | System and method for reducing noise in multi-capacity compressors A method and system is provided for reducing chatter in multi-capacity compressors having disengageable eccentric structures. The multi-capacity fluid compressor includes a compression chamber having a discharge end and an inner surface. The compressor also includes... | 05/20/2008 |
| 7353748 | Linear actuator and method for processing the same A bent section, which is bent substantially perpendicularly toward a main cylinder body, is formed at one end of a slide table. Further, a pair of ball-rolling grooves, in which a plurality of ball bearings roll, are formed on side surfaces of the slide table oppose... | 04/08/2008 |
| 7243593 | Loader assembly, combination motor vehicle and loader assembly, hydraulic cylinders and methods for operating a loader assembly Hydraulic cylinders that are ported at one end are disclose. ... | 07/17/2007 |
| 7240608 | Cylinder liner for a cylinder crankcase A cylinder liner (2) for a cylinder block has a contouring (6) at one end. The contouring (6) serves to support the liner (2) on a sleeve (4) inside a die-casting tool. When the liner (2) is cast in, recesses (10) of ... | 07/10/2007 |
| 7107768 | Hydraulic system The present invention relates to a hydraulic system, in particular for motor vehicles, including a master cylinder having a housing, a piston which is axially movably disposed therein, which bounds a pressure chamber filled with a hydraulic fluid, and which, upon ac... | 09/19/2006 |
| 7055867 | Brake servo comprising a connecting element with a defined angular position The present invention relates to a brake booster with at least one booster housing section including an opening into which a sealing element made of a flexible material is mounted, said sealing element including a recess into which a pneumatic connecting element, in... | 06/06/2006 |
| 6952922 | Choke valve of clutch release cylinder A choke valve of the clutch release cylinder wherein the actuating oil is slowly discharged when the clutch pedal is released, and when the clutch pedal is depressed, resistance to the actuating oil is minimized for the actuating oil to be swiftly and smoothly suppl... | 10/11/2005 |
| 6921009 | Nailing machine A nailing machine, in which a part constituting a nose is changed so as to increase the service life of a driver blade for driving a nail. The nailing machine includes a nose having a nose hole in which the nail is supplied, and the driver blade made of metal. At le... | 07/26/2005 |
| 6726511 | Internally ported hydraulic cylinder assembly A fluid cylinder such as a hydraulic cylinder used on marine engines to control the steering direction and/or trim position of a propeller shaft comprises internally ported fluid lines located in line with the longitudinal axis of the cylinder and may be either port... | 04/27/2004 |
| 6588315 | Ram device A ram device has a cylindrical housing (10) in which is arranged a pressure medium actuated impact piston and a control unit for controlling the pressure medium flow into the housing (10) and which housing (10) at its rearward end is provided with a press... | 07/08/2003 |
| 6571683 | Hydraulic cylinder A double-action hydraulic cylinder (3) is provided with an axially slidable piston between a front cover and a rear cover, whereby the piston may be coupled to an extreme load through a piston rod (4) and whereby the piston may be biased via connections (... | 06/03/2003 |
| 6453545 | Compact inflatable device for applying localized pressure to turbine generator armature bars Radial pressure is applied to a turbine generator armature bar using a simple hand held device that can be readily manipulated by a single human operator. A retainer platform has two wedge shaped portions with handles, and by the operator sliding the wedg... | 09/24/2002 |
| 6408735 | Actuator An actuator having a piston member slideable within a cylinder, the piston member defining with the cylinder a first chamber and a second chamber, the effective cross-sectional of the piston member exposed to the fluid pressure within the first chamber be... | 06/25/2002 |
| 6354189 | Pressure medium system, working cylinder and retaining clamp A pressure medium system, particularly a hydraulic system, which includes at least one working cylinder (pressure medium cylinder) and at least one pressure medium line for the supply and/or discharge of the pressure medium whereby assembly and disassembl... | 03/12/2002 |
| 6324962 | Valve block mounting arrangement A valve block mounting arrangement for mounting a valve block directly to the ports of a hydraulic motor. The inventive device includes a main body having a first bore, a second bore and a cartridge bore. The first bore and the second are substantially pa... | 12/04/2001 |
| 6302012 | Arrangement for the supply of pressure medium to a hydraulic or pneumatic cylinder The supply of pressure medium to hydraulic or pneumatic cylinders is usually carried out by means of pressure medium lines which are connected to the heads of the cylinders by means of standardized connection threads. This method of supplying pressure med... | 10/16/2001 |
| 6176147 | Power steering apparatus In the power steering apparatus, a casing comprises integrated separate sections of a valve casing in which a control valve is incorporated, a cylinder tube of a power cylinder, and a gear casing in which a steering gear is incorporated. In the cylinder t... | 01/23/2001 |
| 6058826 | Power steering cylinder assembly A power steering cylinder assembly including a cylinder divided by a piston into opposite chambers and a valve controlling flow between a pump, a tank and the chambers. Bypass passages selectively connects the opposite chambers when there is no flow from ... | 05/09/2000 |
| 6055762 | Combined boat hook and bilge pump A combination telescopic boat hook/bilge pump which includes a novel locking device is described. The inner tube is provided with a washer at the proximal end which acts with the outer tube as a piston. The ball tip distal end of the boat hook is provided... | 05/02/2000 |
| 6044752 | Hydraulic cylinder unit An inner cylinder 6 is disposed in an outer cylinder 5, and the interior of the inner cylinder 6 is defined into an upper chamber a and a lower chamber b by a piston 3. A space between the outer cylinder 5 and the inner cylinder 6 defines an oil passage c... | 04/04/2000 |
| 6026643 | Master cylinder To provide a hydraulic master cylinder with inlet ports and outlet ports arranged in an angle to each other wherein the outlet ports can be on either side of the housing without the need of two different casts, the master cylinder according to the inventi... | 02/22/2000 |
| 5950427 | Fail-safe electric hydraulic actuator An electro-hydraulic valve actuator comprising an actuator casing; a piston/rack means in the casing having walls reciprocating linearly to effect linear movements, the reciprocating walls defining a center chamber therebetween and two outside chambers in... | 09/14/1999 |
| 5890414 | Stop cylinder and piston assembly A stop cylinder and piston assembly has both a firing piston and a piston ed for both firing and return located on the same piston rod. The stop cylinder and piston assembly is designed with gas passages so that gas injected for firing purposes through a ... | 04/06/1999 |
| 5884549 | Linear actuator A linear actuator comprising a guide section formed along a longitudinal direction to protrude on a bottom surface of a slide table, a pair of guide blocks formed mutually opposingly and seperated from each other by a predetermined spacing distance on an ... | 03/23/1999 |
| 5727440 | Gas cylinder element A gas spring element or gas cylinder element, particularly suitable for presses for non-cutting forming, including a closed non-compressible fluid system which includes the ring space between the piston or as the case may be piston rod and the cylinder or... | 03/17/1998 |
| 5727447 | Supercharge pressure control apparatus A supercharge pressure control apparatus comprises a crimped member for securing an enclosure to a mounting member fixed in an internal combustion engine by crimping, a notch formed at one end portion of the crimped member for preventing the end portion f... | 03/17/1998 |
| 5697287 | Hydraulic power cylinder In a work cylinder (1) a ring (10) has been respectively inserted in the cross-sectional plane of the line connection (for example 6), which has a conduit (13) corresponding with the connection. At the highest point in the work cylinder (1) this conduit (... | 12/16/1997 |
| 5522302 | Cylinder and piston assembly and method of porting A multi-piston assembly is illustrated wherein a cylindrical housing (A) is ported through longitudinal circumferentially spaced ports (F) and (G) carried within the cylindrical housing. Porting through piston rods is thus avoided so that their cross sect... | 06/04/1996 |
| 5477774 | Cylinder device For attaching a cylinder device to an attachment surface extending perpendicularly to the axis of a piston rod, bolts are inserted through attachment holes which are defined in a rod cover and extend along the axis of the piston rod. A cylinder tube has r... | 12/26/1995 |
| 5476162 | Forward control for motorcycle rear brakes A motorcycle forward control for rear brakes. A housing internally carries a brake cylinder unit comprising a cylindrical chamber in which a plunger is operated through a linkage from a brake pedal. Pressurized brake fluid is directed from the cylinder th... | 12/19/1995 |
| 5442992 | Hydraulic control apparatus with selectively operated check valve assembly A hydraulic control apparatus for use with a hydraulically operated tool comprises a valve body operatively and having a valve bore defining an axis. The valve body also defines a pressure port and a return port for connecting the valve bore to a source o... | 08/22/1995 |
| 5357847 | Pressure vessels having end closures and retainers A fluid-pressure operated actuator has a body and an end cap which when telescoped in the body provides confronting grooves which receive a circlip in the form of a flexible length of wire spring. The end cap carries an O-ring seal axially only outwards o... | 10/25/1994 |
| 5245912 | Profiled tube for a working cylinder without a piston rod The invention relates to a profiled tube for working cylinders without a piston rod having a cylinder chamber which extends in longitudinal direction and a piston guided movably therein and connected to pull means, and a carriage connected to the pull mea... | 09/21/1993 |
| 5241896 | Pneumatic cylinder apparatus A cylinder apparatus includes a piston and a cylinder tube including a first end and a second end. The cylinder tube is formed to include a central bore extending from the first end to the second end for receiving the piston therein and a second bore exte... | 09/07/1993 |
| 5209651 | Multiple engine deep well pump A deep well pump for positioning in a bottom hole assembly and having at least one fluid pump and at least two fluid powered motors with the pump and motor pistons carried in alignment on the piston rod. The pump includes passages for delivering a power f... | 05/11/1993 |
| 5121686 | Piston-cylinder assembly of plastic material A clutch master assembly made of plastic material for an automotive vehicle. The assembly a plastic cylinder housing (1) and a piston (2) and a plastic bushing (3). The plastic bushing is arranged to allow it to be screwed in by means of a thread portion ... | 06/16/1992 |
| 5095809 | Piston vibrator having an asymmetric cylindrical bore The invention relates to a piston vibrator comprising a case with at least one cylindrical bore (5), at least one air connection (7) taken laterally to the bore (5), and a piston (2) longitudinally displaceable in the bore (5). As a means of making such a... | 03/17/1992 |
