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| Number | Title | Issue Date |
| 7441494 | Industrial truck having a lifting mast and tilting cylinders having an integrated hydraulic distributor An industrial truck includes a tiltable lifting mast (1), a first tilting cylinder (2), and a second tilting cylinder (3). The two tilting cylinders (2, 3) are of double-acting design and are connected hydraulically in parallel. Two hydra... | 10/28/2008 |
| 7434504 | Cylinder for pressurised fluids A Cylinder for pressurized fluids, such as oil, air or the like, including of a cylindrical nozzle and a pair of heads designed to be attached to the ends of the nozzle, characterized in that two annular grooves are made partly in the cylinder liner and partly in ea... | 10/14/2008 |
| 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 |
| 6991210 | Actuator for driving a valve The purpose of this invention is to provide an actuator for valve driving without enlarging its size, without increasing the cost, and without reducing the pressure receiving area of the pistons. In order to achieve the purpose, the present invention comprises the l... | 01/31/2006 |
| 6964221 | Welded hydraulic actuator including a seal and method of manufacturing same A hydraulic actuator for use in a work vehicle includes a tube including a first end, a second end and an inner surface; a plug with a portion of the plug disposed inside the tube and a portion of the plug extending outside the tube; a weld extending around the peri... | 11/15/2005 |
| 6962103 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons having diffe... | 11/08/2005 |
| 6921254 | Pump A pump includes a cylinder, a piston, a connecting rod, a plug, a nozzle and a fastener. The cylinder includes a first open end and a second open end. The piston is movable in the cylinder. The connecting rod includes a first end connected with the piston in the cyl... | 07/26/2005 |
| 6805039 | Oil pressure cylinder with prolonged adjusting ring An oil pressure cylinder has an adjusting ring. The adjusting ring is prolonged and is formed by two parts which are buckled with one another. An elastic element is used to buckle the adjusting ring. A spring is embedded at a slot of the adjusting ring so as to tigh... | 10/19/2004 |
| 6761105 | End wall arrangement for fluid-operated piston-type actuator A fluid-operated piston-type actuator includes a body having first and second axial ends and an inner surface that defines a bore that opens through at least one of the first and second axial ends to define an open end of the bore. A piston is slidably positioned in... | 07/13/2004 |
| 6637315 | Welded hydraulic cylinder for work vehicles A welded cylinder is provided wherein a seal (such as an O-ring seal or a cured anaerobic sealant) is disposed between the tube of a cylinder and its welded end plug. The seal is spaced away from the circumferential weld that joins the end plug to the cyl... | 10/28/2003 |
| 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 |
| 6550369 | Linear actuator Each of end blocks is provided with a first pressure fluid communicating passage for communication between a first pressure fluid inlet/outlet port and a third pressure fluid inlet/outlet port, a second pressure fluid inlet/outlet port, and a second press... | 04/22/2003 |
| 6450083 | Telescopic hydraulic hoist A telescoping hydraulic hoist which improves stability and rigidity in the extended position without sacrificing the maximum extension length of the hoist and with fewer machined parts which may be dislodged or damaged in operation. The base member has a ... | 09/17/2002 |
| 6276257 | Working cylinder, switch valve and pressure-actuated working unit A working cylinder (A) having at least one working chamber (6, 7) defined by the cylinder barrel (1), at least one of the end sections (2, 3) and a piston (4), at least one supply port (9a, 9b) and a exhaust port (12a, 12b) for the working medium. The exh... | 08/21/2001 |
| 6276258 | Pressure activated piston and cylinder unit for use in a die A pressure activated piston and cylinder unit for use with a die block is taught which provides installation and service portions at the rear face of the unit. Also provided is a pressure activated piston and cylinder unit for use with a die block, of sim... | 08/21/2001 |
| 6196478 | Coating system fluid supply cylinder with improved flushability A fluid supply cylinder with improved flusbability, useable for supplying paints to a dispenser in electrostatic coating systems. The fluid supply cylinder having generally a piston reciprocatingly disposed in a chamber of a body member, the piston having... | 03/06/2001 |
| 6101922 | Cylinder A cylinder includes a cylindrical casing, a cap mounted to the cylindrical casing, a retaining member, and a piston rod assembly which is positioned in the interior of the cylindrical casing. The cylindrical casing includes a casing wall which extends alo... | 08/15/2000 |
| 6047627 | Piston end dampening A pressure medium driven device has a cylinder having a cylinder tube, means forming a discharge outlet for a pressure medium, a piston movable in the cylinder over a stroke having a stroke end which is dampened by a counter pressure generated by throttli... | 04/11/2000 |
| 6038959 | Cylinder device for displacing workpiece A cylinder device includes a casing with a pair of fluid inlet/outlet ports defined therein, a base plate, a piston fixed to the base plate, a cylinder, and a top plate. The cylinder device also has first, second, and third cylinder chambers defined in th... | 03/21/2000 |
| 5946912 | Oil return loop of a hydraulic cylinder An oil return loop of a hydraulic cylinder which includes a plurality of equiangularly spaced V-shaped oil return grooves at the inside wall of an inner cylinder of the hydraulic cylinder for guiding saturated hydraulic oil to the outer cylinder of the hy... | 09/07/1999 |
| 5916347 | Hydraulic servo device for automatic transmissions A hydraulic servo device for an automatic transmission is presented with a reduced axial length as a result of the manner in which oil pressure is fed into the cylinder. The hydraulic servo device includes a cylinder, a piston position to slide within the... | 06/29/1999 |
| 5876190 | Vacuum membrane pump and a head portion for a vacuum membrane pump A vacuum membrane pump includes a housing, a membrane and a head portion having a sealing surface which engages with a sealing edge of the membrane to form a seal. A pump chamber is formed between the head portion and the membrane. The head portion is cas... | 03/02/1999 |
| 5839346 | Rotary hydraulic actuator including groove-like fluid supply paths in a face of a bracket A rotary hydraulic actuator including a sealed vessel including brackets and a casing, a partition vane attached to a shaft supported by the brackets for dividing an inside of the sealed vessel into a first pressure chamber and a second pressure chamber a... | 11/24/1998 |
| 5806406 | Hydraulic piston cylinder A hydraulic cylinder, comprising a cylindric tube (10) with two end covers (11, 12). One of the end covers (11) is provided with an opening for a piston rod (13) connected to a piston (14) which is displaceable between the end covers. The end covers (11, ... | 09/15/1998 |
| 5787791 | Turbocharger actuator with rolling O-ring An actuator for a turbocharger includes a housing having a chamber therein, a piston assembly having a rod and a piston secured to a rod for axial movement therewith, a spring operatively interposed between the piston and the housing for urging the piston... | 08/04/1998 |
| 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 |
| 5669284 | Fluid cylinder end cap assembly An end cap assembly for a fluid cylinder includes a cylindrical casing having a longitudinal axis and an open end, and an end cap closing the open end of the casing. The end cap has a first connecting device for connecting with the casing, and the casing ... | 09/23/1997 |
| 5640894 | Method of assembly for tamper-resistant brake actuator In a method of forming tamper-resistant brake actuators, the ports for connecting air pressure sources to apertures within the central housing of the brake actuator are bolted to the central housing after the brake housing members have been inelastically ... | 06/24/1997 |
| 5622098 | High pressure cylinder with locking end caps The invention includes a light-weight, high pressure cylinder, and a method of producing such a cylinder. The pressure cylinder uses a composite pressure barrel for maintaining and distributing fluid pressure therein. The composite barrel has tapered ends... | 04/22/1997 |
| 5533879 | Manual driven valved piston reciprocating liquid pump A liquid pump comprises an insulated cylinder which is provided with a top seat and a bottom seat. The top seat is provided with a liquid inlet while the bottom seat is provided with a liquid outlet. A piston rod is fastened with the top seat and is provi... | 07/09/1996 |
| 5507218 | Linear-drive cylinder A linear-drive cylinder actuated by a pull means or by a pressure medium has a cylinder tube, in which a piston is guided axially displaceably. The movement of the piston is guided outward via force-transmission means. The cylinder tube is closed on the e... | 04/16/1996 |
| 5495792 | Double acting hydraulic cylinder with improved lubrication and piston rod guides Disclosed is a double piston rod type hydraulic cylinder having a pair of pressure chambers containing piston rods that reciprocate in response to changes of the pressure of hydraulic fluid contained in both pressure chambers. This hydraulic cylinder is u... | 03/05/1996 |
| 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 |
| 5471909 | Fluid cylinder A fluid cylinder, particularly for steering a marine outboard motor, has a tubular body portion, and a piston rod and a piston movable relative to the body portion. First and second end plugs engage open end portions of the body portion and at least one e... | 12/05/1995 |
| 5456161 | Compact fluid operated cylinder and method A compact high pressure fluid operated cylinder and method for making same is illustrated wherein an end cap is held within the cylinder by a snap ring (E) carried within a groove at the end of the cylinder to prevent axial dislodgement outwardly from the... | 10/10/1995 |
| 5363742 | Air over oil intensifier An air over oil intensifier has an oil chamber having first and second ports (C) and (E), respectively, opening into a highest collection point of the cylindrical interior of the oil chamber defined by an upwardly and inwardly tapering surface (D) at a to... | 11/15/1994 |
| 5305682 | Piping and wiring lead-out mechanism for rodless cylinder In a rodless cylinder having a piston fitted in a cylinder body for reciprocating movement therein, and a moving member to be moved back and forth along the cylinder body in synchronism with the piston, there is provided a piping and wiring lead-out mecha... | 04/26/1994 |
| 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 |
| 5094143 | Port mounted fluid control valve construction A port mounted fluid control valve construction (18) is mounted to a pneumatic cylinder (10) through the first port (31) and second port (37) of the cylinder. The construction includes a removable valve body portion (22) which is detachable from a manifol... | 03/10/1992 |
| 4921523 | Mechanism for opening and closing at least one mould of a glassware forming machine The mechanism comprises a piston and cylinder assembly operable to move mould side portion supports between mould open and mould closed positions thereof. A check valve (72, 74, 76, 78, 80, 82) is mounted in a passage (66) into the cylinder to allow fluid... | 05/01/1990 |
