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| Number | Title | Issue Date |
| 7779745 | Automatic-locking hydraulic jack An automatic-locking hydraulic jack has a piston (1, 30) that slides into a cylinder (3-2, 32). Locking of the piston is achieved by elastic deformation of either the inside wall (2) of the cylinder or of the outside wall of the piston ( | 08/24/2010 |
| 7690292 | Linear drive for a vehicle occupant restraint system, especially for a belt buckle tensioner A linear drive for a vehicle occupant restraint system, especially for a belt buckle tensioner, comprises a cylinder, a piston that can be moved in the cylinder and that has a locking part that is firmly connected to a traction element, and comprising at least one l... | 04/06/2010 |
| 7261031 | Actuating device The actuating device is capable of automatically eliminating a clearance between a contact body and a rail. The actuating device comprises: a moving body guided by the rail; the contact body contacting the rail; and a pressure unit biasing the contact body toward th... | 08/28/2007 |
| 7246789 | Cable clamping apparatus and method An embodiment of the invention involves a method for engaging an elongated item, such as a wire or cable, to allow it to be pulled through a path, such as in a conduit, and includes gripping the elongated item with multiple teeth. ... | 07/24/2007 |
| 7240605 | Actuator with a variable run The invention concerns a pneumatic and/or hydraulic actuator. The pneumatic and/or hydraulic actuator is one in which the run of a driving shaft, which is pneumatically operated by a piston, can vary on the basis of the insertion in the body of the actuator or at le... | 07/10/2007 |
| 7195224 | Blowout preventer and locking mechanism A blowout preventer having a main body, a ram system with ram apparatus, a movement system with movable shaft apparatus connected to the ram apparatus, the ram apparatus movable from a first open-ram position to a second closed-ram position, the movable shaft appara... | 03/27/2007 |
| 7131518 | Motion control apparatus with backlash reduction A motion controller for use with a rod (10A, 10B, 10C) has a backlash reducer (88A, 88B, 88C) that substantially reduces or eliminates the space created after manufacturing parts with specified tolerance dimensions to substa... | 11/07/2006 |
| 7124861 | Motion control apparatus A brake (10) having application for a linear or rotational motion device includes a housing (120) in which a first piston (140), a wedge (142) and a second piston (144) cooperate to engage a friction facing (136) through a p... | 10/24/2006 |
| 7013792 | Actuator provided with locking mechanism A piston rod is formed in a diameter smaller than an inner diameter of a hollow cylinder. The piston rod is inserted in the cylinder so as to be relatively movable in an axial direction of the cylinder. A locking mechanism comprises a first surface provided on the i... | 03/21/2006 |
| 6969042 | Blowout preventer and ram actuator A blowout preventer with a main body; a base releasably connected to the main body, the base having a base space therein, the base having a ram shaft opening; a primary piston movably disposed within the base space; a ram shaft to which the primary piston is connect... | 11/29/2005 |
| RE38843 | Hydrostatic slewing drive A hydrostatic slewing drive suitable for use in construction equipment, in particular excavators, has a pinion shaft that is rotationally mounted in a housing. A slewing pinion is connected to the pinion shaft. An axial piston motor that utilizes a swashplate constr... | 10/25/2005 |
| 6912947 | Supporting device The invention relates to a supporting device for supporting substrates in a component placement machine including a housing (1), a piston rod (5) arranged in the housing so as to be movable in its longitudinal direction in the housing (1) by pre... | 07/05/2005 |
| 6663354 | Hydrostatic axial piston machine with a control port, a cradle supported swashplate and a swashplate actuating piston A hydrostatic axial piston machine has a cylinder block with bores holding reciprocating pistons, a swashplate supporting the pistons, and control cams to supply the bores with hydraulic fluid. The swashplate is a pivoting cradle mounted on friction beari... | 12/16/2003 |
| 6604450 | Hydrostatic slewing drive A hydrostatic slewing drive suitable for use in construction equipment, in particular excavators, has a pinion shaft that is rotationally mounted in a housing. A slewing pinion is connected to the pinion shaft. An axial piston motor that utilizes a swashp... | 08/12/2003 |
| 6382078 | Attachment structure for brake-equipped cylinder Disclosed is an attachment structure for a brake-equipped cylinder, comprising a through-hole-equipped bolt formed with a through-hole penetrating therethrough in an axial direction, for integrally joining a main cylinder body and a brake section by being... | 05/07/2002 |
| 6343538 | Multiposition self-locking cylinder A self-locking cylinder capable of restraining substantially infinite force including: an angular or conical surface; a locking part; a release part; a force surface for establishing locking forces; a plurality of cylindrical or spherical parts such that ... | 02/05/2002 |
| 6164185 | Braking device of linear moving operating devices A brake for linear movement devices comprising a device. The brake means includes a bar which extends parallel with the path of movement of the device and which accommodates a pressurizable hose-like element that extends along the bar. The invention is ch... | 12/26/2000 |
| 5957031 | Hydraulic cylinder In order to facilitate a simple and cost-effective manufacture of a hydraulic cylinder, the cylinder tube (3) is provided as smooth stock with connectors (9) set up, preferably stud-welded, for the hydraulic attachments (1,2). Assembly parts provided in t... | 09/28/1999 |
| 5868060 | Quick-release cam lock A quick-release cam lock for selectively locking the relative position of a hydraulic cylinder and a piston. The quick-release cam lock permits speedy unlocking and repositioning of the hydraulic cylinder and its accompanying piston and oversleeve, thus a... | 02/09/1999 |
| 5791230 | Rod clamping device for a linear fluid actuator A rod clamp device having a clamp sleeve and a cam member spring biased axially in a direction to actuate the clamp sleeve to a clamp condition, and a clamp release piston that is operable through a mechanical force amplifying mechanism to move the cam me... | 08/11/1998 |
| 5685141 | Lock for nozzle control in the event of hydraulic failure A method is provided for locking jet engine exhaust nozzle position in a hydraulic system having nozzle actuators connected by a synchronization cable. The synchronization cable engages with a conical brake locking mechanism to prevent cable rotation in t... | 11/11/1997 |
| 5575452 | Blowout preventer with ram wedge locks A hydraulically controlled ram actuating mechanism 10 for a blowout preventer controls the opening and closing of a ram block 12 interconnected with a ram 14 movable within a ram housing 26 along ram axis 16. The ram piston 24 and a locking piston 62 are ... | 11/19/1996 |
| 5513555 | Quick-release cam lock with locking pin A quick-release cam lock for selectively locking the relative position of a hydraulic cylinder and a piston. The quick-release cam lock permits speedy unlocking and repositioning of the hydraulic cylinder and its accompanying piston, thus allowing for spe... | 05/07/1996 |
| 5205203 | Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts A hydraulic jack particularly intended for use in automobile lifts includes a safety stop mechanism including a fixed toothed rod and a piston-supported pawl mechanism which includes one or more stop members. Each of the stop members can be retracted, to ... | 04/27/1993 |
| 5129319 | Safety device for ink forming rollers In a safety device for ink forming rollers, each of the rollers is supported on a frame through a moving shaft movable in an axial direction to remove the ink forming roller, a safety pin is provided which is urged and supported on the frame, the moving s... | 07/14/1992 |
| 5048656 | Fluid operated clutch control system having latch member Provided is an improved fluid operated clutch control system having a latch member operable to lock the clutch in a selected condition of engagement or disengagement when the fluid pressure falls below a predetermined minimum value. In one embodiment a sy... | 09/17/1991 |
| 5035113 | Electropneumatic remote control for shifting the mechanical transmission of a motor vehicle A remote control shifting system for a mechanical transmission. The transmission is operated by two pneumatic cylinders, a selecting cylinder operating in the direction of shift path selection and a shifting cylinder acting in the direction of shifting. T... | 07/30/1991 |
| 5025708 | Actuator with automatic lock An improved blowout preventor actuator is provided for opening and closing a ram block within a blowout preventor body to control the flow of well fluid. The working or power piston within the actuator cylinder is provided with one or more axially extendi... | 06/25/1991 |
| 5018434 | Self-adjusting servo mechanism for actuating a friction band assembly in a planetary gear set The present invention is directed to a self-adjusting servo mechanism (10). The servo pin (30) presented from the servo mechanism (10) will protract sufficiently to effect operative engagement of a friction band assembly (13) with a rotating member (18) i... | 05/28/1991 |
| 4969390 | Rod locking device A new and improved ram locking apparatus for blowout preventer rams which allows the rams to be locked in the closed position and compensates for wear on the sealing elements of the rams. The device consists of a tubular cross containing a rod extension w... | 11/13/1990 |
| 4957193 | Actuating cylinder having mechanical advantage An actuating cylinder having a fluid pressure operated piston member connected by a friction member to a push rod to which a brake shoe, or the like, may be attached as the output member. A force transfer lever is arranged between the piston and push rod ... | 09/18/1990 |
| 4699042 | Fluid power actuator The invention relates to a fluid power actuator with a cylinder, a piston and a piston rod whose motion is controlled by a positioning device which halts it in selected settings. The positioning device has a row of depressions, for example gaps between th... | 10/13/1987 |
| 4458887 | Gas spring locking mechanism A gas spring comprising a cylinder, a rod slidably extending from the cylinder, and a novel locking mechanism. The mechanism comprises first and second axially contiguous recesses in the circumference of the rod, a locking member normally located in the f... | 07/10/1984 |
| 4078778 | Gas spring In a gas spring having a cylinder and a piston rod movable within the cylinder, braking elements are provided which brake or block the movement of the piston rod with respect to the cylinder when the interior pressure within the cylinder is reduced below ... | 03/14/1978 |
| 4044900 | Automobile towing device A boom for lifting and supporting a vehicle to be towed is pivotally supported at one end thereof on the bed of the towing truck. A hydraulic cylinder is pivotally supported on the truck and has its ram pivotally attached to the boom. Also pivotally attac... | 08/30/1977 |
| 3969988 | Arresting device for impact drive tools An impact drive tool is provided with a percussive piston arranged in a cylinder. A rod on the piston is mounted to drive a nail or other object into a workpiece. A valve arrangement is provided to apply compressed air to the upper surface of the piston, ... | 07/20/1976 |
