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| Number | Title | Issue Date |
| 7444922 | Fastening assembly, fastener, and fluid pressure cylinder unit Each of two members to be fastened has a connecting surface, a communication groove opening on the connecting surface, and an engagement groove communicating with the communication groove and having an engagement surface parallel to the connecting surface. A fasteni... | 11/04/2008 |
| 7290477 | Linear drive A linear drive has a drive housing and a carriage guide for relative motion in the direction of a principal axis. The carriage possesses a row of openings on it with several first carriage openings, whereas the drive housing has a row of openings on the housing side... | 11/06/2007 |
| 7284961 | Pumping system, replacement kit including piston and/or cylinder, and method for pumping system maintenance A pumping system including a pump is disclosed. The pump includes a replacement piston and a replacement cylinder associated with the replacement piston. The replacement piston has a cross sectional area smaller than a cross sectional area of an original piston of t... | 10/23/2007 |
| 7278441 | Fluid controller A fluid control device 1 has an upper space S1 formed between and defined by the upper surface of a piston 10 and the lower surface of top wall 8a of an upper casing 8, and a lower space S2 formed between and defined ... | 10/09/2007 |
| 7093641 | Robotic tape applicator and method A method of fastening a first curved part to a second curved part comprises placing the second part into a specified orientation in relation to a robotically controlled tape applicator, applying two-sided adhesive tape along a non-linear path over the surface of the... | 08/22/2006 |
| 6901665 | Pneumatic pruning hook with a telescopic shank A pneumatic pruning hook with a telescopic shank includes a handle having a chamber defined therein and connected to a compressed air source, a valve mounted in the chamber for selectively allowing the compressed flowing into the chamber. The telescopic shank includ... | 06/07/2005 |
| 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 |
| 6200110 | Air compressor An air compressor includes a housing having a tube extended from the top and having a passage communicating the housing with the tube and having a tapered surface. A piston is slidably received in the chamber of the housing and is forced to move along the... | 03/13/2001 |
| 6145404 | Modular manipulation unit A modular manipulation unit is disclosed. The unit includes a body (11) formed of three extruded, profiled elements. The elements include a base plate (15), a top element or cover (16) fixed on the base plate, and an intermediate slide (17) arranged and g... | 11/14/2000 |
| 5983779 | Positive displacement pump for liquid and gases A positive displacement type pump used for applications such as pressurizing beverage dispensing containers, filling fire extinguishers, and pressuring welding tanks. CO2 or similar fluids are drawn into and discharged through the pump by a rec... | 11/16/1999 |
| 5853022 | Valve actuator with instrument mounting manifold A valve actuator with an instrument mounting pad and a manifold in a power module and yoke combination for mounting a valve controller instrument without tubing or mounting brackets. A cover encloses the feedback linkage between the actuator and instrumen... | 12/29/1998 |
| 5823091 | Radial piston pump having means for selectively disabling at least one of the pumping chambers The present invention relates to a radial piston pump, and more particularly to a radial piston pump suitable for delivering liquid at a high pressure and at a volumetric output rate which can be controlled independently of the speed of rotation of the pu... | 10/20/1998 |
| 5662023 | Replaceable cylinder piston assembly for a lubricator pump A lubricator pump having a replaceable cylinder piston assembly is disclosed for replacement or interchangeability with cylinders having different piston sizes. The interchangeability of the cylinder piston assembly allows for different lubricant output.... | 09/02/1997 |
| 5591012 | Conveying pump for supply containers of various heights In a conveying pump having a cylinder introducible into a reservoir and having a pump piston, whereby the conveyed medium is supplied via an ascending line to a discharge line, an ascending line formed of two sections adjustable relative to one another is... | 01/07/1997 |
| 5568761 | Pneumatic Jack Pneumatic jack of the type comprising a rigid body (1) joined to the outer edge of a deformable membrane (2) so as to delimit with the latter a chamber of variable volume capable of being subjected to either atmospheric pressure of a negative pressure, vi... | 10/29/1996 |
| 5542939 | Fluid aspiration-collection apparatus The present invention pertains to a fluid aspiration-collection apparatus for aspirating and collecting a fluid into a suction chamber through a fluid inlet communicating with the suction chamber in the case, and for discharging the fluid through a fluid ... | 08/06/1996 |
| 5469774 | Pneumatic actuating drive A pneumatic actuating drive (1, 61) for final control elements comprises a drive housing (6) and a drive component (15) movable therein, to which the drive component (15) is attached a drive element (24) that exits from the drive housing (6) and that can ... | 11/28/1995 |
| 5443370 | Two cylinder manual air pump An air pump comprises a head; an air guiding tube fastened at one end thereof with the head and at another end thereof with a two-way air admitting piston; a first cylinder fitted over the two-way air admitting piston such that the first cylinder can be c... | 08/22/1995 |
| 5317954 | Pressure switch assembly The present invention provides a pressure switch assembly for monitoring a source of fluid pressure. In one embodiment, the pressure switch assembly senses a variation of fluid pressure for actuation of a micro-switch to open or close an electric circuit.... | 06/07/1994 |
| 5279325 | Pneumatic control drive A pneumatic control drive 1, 51, 71 for control devices, in particular control valves, comprises a drive housing 5 and a drive member 11 displaceable therein and to which is affixed a drive element 18 displaceable together with said drive member 11 to act... | 01/18/1994 |
| 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 |
| 5219393 | Pressure driven rotary drive A hydraulically operated rotary drive includes a housing which is closed in hydraulically tight manner by flat covers and can be connected to a source of pressure fluid, a rotatable shaft extending through the covers out of the housing and a belt which is... | 06/15/1993 |
| 5167182 | Modular fluid actuator A fluid actuator assembly comprising a plurality of modules which are secured in serial relation to form the body of the fluid actuator. A replaceable liner, common to each of the modules, extends through the bores of the modules which make up the body. M... | 12/01/1992 |
| 5080565 | Retainer for piston head subassembly and method of retaining piston head subassembly The present invention is a retainer for a piston and valve subassembly of a scotch yoke compressor and a method of assembling it. The subassembly is comprised of a piston head, a suction valve, a spacer, a stop washer, and a rod held together by a retaine... | 01/14/1992 |
| 5074195 | Fixed swash plate for an axial piston machine A fixed swash plate for an axial piston machine of fixed capacitive type, which has a casing housing therein a cylinder, is formed to have its divided surfaces on the horizontal plane along the axis of the rotary shaft of the cylinder, wherein a support m... | 12/24/1991 |
| 5052275 | Horizontal reciprocating compressor with an eccentrically adjustable piston therein The horizontal reciprocating compressor is provided with a cylinder, piston and piston rod connected to the piston. An eccentric ring is mounted eccentrically within the piston and rotatably receives the piston rod. Rotation of the eccentric ring from tim... | 10/01/1991 |
| 5020420 | Vacuum adapter plate This invention relates to an apparatus and method for adapting an existing air pump to also include a source of vacuum emanating from the same pump. An adapter plate is secured onto the face of the pump from which an outlet protrudes and an air intake is ... | 06/04/1991 |
| 4979367 | Brake master cylinder with selectively positionable bleed screws A master cylinder for hydraulic use, particularly for brake systems for cars. At least two bleed screw openings mounted on the master cylinder body. The first bleed screw opening receives the bleed screw, the second bleed screw opening receives a plug scr... | 12/25/1990 |
| 4964273 | Subplate-mounted control valves in convertible oscillator drive system A fluid-operated actuator (2) is connected to a pumping unit (12) through a control unit (10) in which are mounted control valves (30,32) for regulating the movements of the actuator. The control valves communicate with the actuator and the pumping unit t... | 10/23/1990 |
| 4885981 | Spring return cylinder actuator A reversible spring return cylinder actuator having a pair of piston rods extending from a common spring load piston to the exterior of the housing. In a non-pressure position of the piston, one of the piston rods extends further from the housing than the... | 12/12/1989 |
| 4798128 | Double acting cylinder unit A double acting cylinder actuated by air pressure having inner and outer double-wall cylinder tubes. A plurality of pairs of air pressure feed-exhaust ports of the cylinder tubes of this double acting cylinder are concentratedly provided as a pair on the ... | 01/17/1989 |
| 4778347 | High production pump for viscous materials and method Apparatus and method of improving the performance of a pump for pumping fireproofing material and the like viscous materials is disclosed wherein the pump is the type which includes a compression chamber (44) having an inlet (48) and an outlet (50). A pis... | 10/18/1988 |
| 4774874 | Rolling diaphragm construction and piston-cylinder assembly including same particularly useful for suction or compression pumps A rolling diaphragm for attachment between a piston and a cylinder, comprises: an inner radial section of circular configuration attachable to the piston, an outer annular skirt attachable to the cylinder, and a rolling wall between said inner radial sect... | 10/04/1988 |
| 4773304 | Device at pneumatic cylinders Device at such pneumatic cylinders where the piston is provided with a lateral carrier means (2) extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band (3). On the outside of the cylinder (1) there is provided at ... | 09/27/1988 |
| 4759263 | Fluid operated cylinder device A fluid operated device includes a cylindrical housing whose opposing ends are closed by suitable end covers and which accommodates a piston rod supporting a piston and made of at least two parts connectable to each other. One of the parts of the piston r... | 07/26/1988 |
| 4726283 | Slide cylinder Disclosed herein is a slide cylinder basically consisting of a cylinder block internally defining a plural number of intercommunicating cylinder bores in parallel relation with each other, a piston and a piston rod fitted in each cylinder bore, and plate-... | 02/23/1988 |
| 4712576 | Pneumatically operated valve An improved pneumatically operated valve for controlling supply of fluid to a certain apparatus adapted to be operated for an intended purpose using the thus supplied fluid. The valve includes a valve portion on the piston rod and a flow passage of fluid ... | 12/15/1987 |
| 4700616 | Piston and cylinder unit The invention relates to a cylinder and piston unit with a cylinder tube closed at both its ends by cylinder end caps. An axially moving piston in the cylinder has a piston rod extending sealingly through at least one end cap. On the outer face of the tub... | 10/20/1987 |
| 4671169 | Fluid actuated ram assembly A fluid actuated ram assembly includes a cylindrical barrel and a rear end cap attached to a rear end of the cylindrical barrel. A piston is located within the cylindrical barrel and both the piston and the cylindrical barrel are adapted for relative move... | 06/09/1987 |
| 4600084 | Hydraulic manifold for two and three stage masts A hydraulic manifold is provided on a primary mast section which maximizes the commonalty of hydraulic components used in the hydraulic lift control systems of two and three stage mast assemblies used in lift trucks. Two and three stage mast assemblies ar... | 07/15/1986 |
