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| Number | Title | Issue Date |
| 8015914 | Pneumatic lift apparatus A pneumatic lift apparatus has a main body including a body tube, with a cross-section of the body tube being neither a perfect circle nor a polygon. A restricting device is slidably mounted on the body tube of the main body, with the body tube restricted not to rot... | 09/13/2011 |
| 7430956 | Single-piece air cylinder for a fluid coupling device A single-piece air cylinder (“air cylinder”) for a pneumatic fan drive system. The air cylinder is comprised of a single-piece stamping having a stepped tab portion for attaching to a piston rod of the pneumatic fan drive system. The air cylinder has a cylinder ... | 10/07/2008 |
| 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 |
| 7290518 | Piston-connecting rod spherical coupling structure A spherical coupling structure for a piston and a connecting rod, wherein a protrusion provided to the reverse side of a crown of a piston and a holding member for holding a small end are slidably fitted onto a small end, and a holding/fastening part for holding the... | 11/06/2007 |
| 7234675 | Vertical guide unit and stage system with the same unit A vertical guide unit is built in modular construction in which a wedge guideway member has raceway grooves cut directly in guideway member while a slider fits over the guideway member for relative movement in a sliding manner. The guideway member has an upper surfa... | 06/26/2007 |
| 7219495 | Hydraulic cylinder A hydraulic cylinder includes a housing having a fluid connection for connecting to a hydraulic system and an after-running connection for connecting to a fluid after-running vessel, and a piston which is axially displaceable in the housing to define a variable pres... | 05/22/2007 |
| 7207262 | Linear drive A linear drive having a drive housing on which a carriage runs to an adjustable extent. The carriage covers over a channel-like housing recess, which is delimited by two mutually side wall. For limiting the stroke of the carriage a first abutment is provided on it w... | 04/24/2007 |
| 7137333 | Single-piece electro-polished air cylinder for a fluid coupling device One advantageous embodiment of the claimed invention is an air cylinder (12) for a pneumatic fan drive system (10). The air cylinder (12) is comprised of a single-piece stamping, which is utilized for covering a piston (22) of the pneumat... | 11/21/2006 |
| 7127982 | Linear drive with non-rotating piston A fluid power linear drive including a housing having an inner surface defining a piston receiving space, a piston reciprocally movable within the piston receiving space and a cooperative engagement means provided on the inner surface of the housing and an outer sur... | 10/31/2006 |
| 7127981 | Spherical coupling structure between a piston and a connecting rod A coupling structure for coupling a piston and a connecting rod has a protrusion formed on the rear surface of the crown of the piston and having a semi-spherical concavity and a threaded portion concentric to the concavity, a substantially spherical small end forme... | 10/31/2006 |
| 7111834 | Swing-arm clamp A swing-arm clamp is provided. The swing-arm clamp has a piston rod which is disposed therein. The piston rod is movable through the swing-arm clamp in response to movement by the piston along a longitudinal axis between first and second positions. The clamp also ha... | 09/26/2006 |
| 7089848 | Non-rotating double acting piston and cylinder assembly A fluid actuated piston and cylinder assembly with a cylinder housing having a head end and a cap end with a piston slidably reclined within the cylinder. A piston rod is attached to the piston for sliding movement with respect to the cylinder housing between an ext... | 08/15/2006 |
| 7056100 | Piston assembly for a compressor A compressor for a vehicle air conditioning system comprises a front casing in which is mounted a swash or wobble plate arrangement operatively connected to a drive shaft and a plurality of pistons each provided with a piston body at one end and a foot portion at it... | 06/06/2006 |
| 7004059 | Hydraulic master cylinder switch A switch adapted to be positioned on the pushrod of a hydraulic cylinder assembly and including a housing adapted to be positioned against an end of the hydraulic cylinder assembly and including a plurality of axially spaced electrical contacts, and a plunger mounte... | 02/28/2006 |
| 6931982 | Linear actuator A rotation-preventing slide is provided for a linear actuator which includes a housing which defines an internal bore and a piston-rod assembly which linearly moves within the internal bore in response to fluid pressure. The rotation-preventing slide is connected to... | 08/23/2005 |
| 6931980 | Pneumatic device with cushioning mechanism The present invention is directed to a cushioning apparatus for a pneumatic device. The cushioning apparatus generally comprises a body, wherein a piston and cylinder reside therein, wherein the piston is operable to translate along a first axis. A first port associ... | 08/23/2005 |
| 6929254 | Swing-arm clamp A swing-arm clamp is provided. The swing-arm clamp has a locating member that is movable in concert with a rod which is disposed in the clamp. The locating member engages a guide when the arm is located in a first position and separates from the guide when in a seco... | 08/16/2005 |
| 6918851 | Concentric shift system for engaging an interaxle differential lock An interaxle differential is provided which includes a side gear, a clutch gear torsionally locked on a first input shaft and axially slidably mounted thereon and an annular piston mounted in a differential casing for urging the clutch gear into engagement with a si... | 07/19/2005 |
| 6792845 | Linear drive unit A linear drive unit (1) possesses a first principal body (2) with a U-like section part (4) and furthermore a second principal body (3) with a drive housing (7). Using at least one drive means the two principal bodies (and 3... | 09/21/2004 |
| 6758127 | Pressurized medium activated working cylinder A pressurized medium activated working cylinder with a piston that can move longitudinally in a cylinder chamber between two end positions has a device for damping the movement of the piston when it approaches each end position. This device comprises, e.g., a dampin... | 07/06/2004 |
| 6732517 | Retainer for brake master cylinder travel sensor An assembly for sensing travel by a piston in a master cylinder comprises a magnet and a retainer for retaining the magnet proximate the piston. An orientation screw engages an axial slot in the piston to inhibit rotation of the piston. ... | 05/11/2004 |
| 6672199 | Cylinder block of an axial piston compressor with elongated cylinder face Cylinder block (32) of an axial piston compressor (20), in particular for use in a vehicle air conditioner with CO2 as coolant, which comprises at least one, in particular several cylinder bores distributed about a periphery, each of which defi... | 01/06/2004 |
| 6637316 | Pressure fluid cylinder with optional anti-rotation feature A pressure fluid cylinder with anti-rotation feature, includes a cylinder tube of non-circular inner cross section and a piston which is sealingly received in the tube. The piston has a circular cross section and is connected at one end to a piston rod in... | 10/28/2003 |
| 6546841 | Swash plate compressor and piston therefor A piston includes an engagement portion that engages with a swash plate. The engagement portion is provided with a pair of arm portions and a coupling portion for coupling base ends of the arm portions each other. An axial rib extending in the axial direc... | 04/15/2003 |
| 6526865 | Weld cylinder According to the present disclosure, a fluid cylinder is provided that is configured to move an object between first and second positions. The fluid cylinder includes a cylinder housing and a shaft configured to move between extended and retracted positio... | 03/04/2003 |
| 6526870 | Fluid pressure cylinder A circular piston and a noncircular rod are separately formed as separate parts and the piston and the rod are integrally connected to each other through an adhesive in a state in which the piston is aligned to be concentric with a circular bearing hole o... | 03/04/2003 |
| 6502880 | Pin part locator A preferred embodiment of a fluid powered apparatus has a housing, a piston and an off-axis member to deter piston rod rotation relative to the housing. In a further aspect of the present invention, an off-center pin actuates one or more sensors while als... | 01/07/2003 |
| 6422128 | Piston-rotation preventing structure for variable displacement swash plate type compressor A piston-rotation preventing structure for a variable displacement swash plate type compressor is disclosed. The piston-rotation preventing structure has a front housing and a cylinder block that constitute the housing of the compressor. The piston has a ... | 07/23/2002 |
| 6367368 | Variable displacement compressor having piston anti-rotation structure A variable capacity swash plate type compressor (10) incorporates an anti-rotation structure (60) formed on each piston (52). Each piston (52) is disposed in a cylinder (14) of a cylinder block (12). The cylinder block (12) is disposed in a crankcase (18)... | 04/09/2002 |
| 6325599 | Piston having anti-rotation for swashplate compressor A piston having anti-rotation for a swashplate compressor includes a body portion extending axially and a connecting portion spaced radially from a longitudinal axis of the body portion and extending axially. The piston also includes a pair of opposed ant... | 12/04/2001 |
| 6220146 | Single-headed-piston type refrigerant compressor with means for preventing rotation of the piston about its own axis within the cylinder bore A single headed piston type refrigerant compressor having a cylinder block forming therein a plurality of cylinder bores receiving a plurality of single-headed pistons for reciprocation therein, and a front housing joined to the cylinder block to define a... | 04/24/2001 |
| 6205906 | Rodless cylinder A rodless cylinder comprises a cylinder tube and guide shafts which are arranged in parallel to one another. The cylinder tube comprises a piston therein which is displaceable in the axial direction. Driving magnets are provided on outer circumference of ... | 03/27/2001 |
| 6189437 | Brake booster having means for mounting on a wall A brake booster having a front shell joined to a rear shell with the interior separated by a wall to at least define a first front chamber and a first rear chamber. A reinforcement plate located adjacent an end face of the front shell has a plurality of s... | 02/20/2001 |
| 6129003 | Fluid-pressure cylinder apparatus A rotation-preventing mechanism for regulating the free rotation of an outer piston in a boosting cylinder apparatus is composed of at least one engaged groove formed in the inner surface of a cylinder tube integrally with the cylinder hole and at least o... | 10/10/2000 |
| 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 |
| 6029561 | Fluid pressure cylinder A fluid pressure cylinder (1) includes two cylinder end walls (6',6"), a cylinder tube (2) and a piston (3), which is axially movable inside the cylinder tube, wherein at least one of the cylinder end walls is provided with an outward housing portion (7;6... | 02/29/2000 |
| 5988041 | Piston for compressors A piston for use in a compressor that compresses gas containing lubricating oil is disclosed. The compressor includes a housing having a crank chamber and cylinder bores, and a swash plate located in the crank chamber. The swash plate is operably connecte... | 11/23/1999 |
| 5974948 | Linear actuator A piston and cylinder assembly for use in actuating a locating pin for sheet metal provides stability for a pin mounted thereon against side to side movement and rotation. To this end the assembly includes a cylinder body assembly with an internal bore an... | 11/02/1999 |
| 5961556 | Prosthetic suspension unit having elastomeric energy storage units A prosthetic suspension unit for cushioning shocks in a prosthetic is provided. The unit includes a cylindrical sleeve attachable to a first prosthetic member; attachment member attachable to a second prosthetic member; a slide bearing allowing the attach... | 10/05/1999 |
| 5957029 | Linear thruster A linear thruster is disclosed in which a load beam is linearly moved by fluid power relative to a guide beam and a piston. The beams are multisided in cross-section to substantially increase the linear bearing area between the bodies and, thereby, substa... | 09/28/1999 |
