Quotables
"The idea that cavalry will be replaced by these iron coaches is absurd. It is little short of treasonous."
Aide-de-camp to Field Marshal Haig ; At a tank demonstration, 1916
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7574952 | Motor fluid drive, especially for rotary, pivotal or linear drive units and corresponding method The invention relates to a drive, especially for rotary, pivotal or linear drive units, comprising a working piston (16), housed in a cylinder (12) of a housing (14), impinged by fluidic pressure media and displaced in the axial direction. The i... | 08/18/2009 |
| 7357066 | Sealing structure of an up-down type piston assembly for exhausting a content The disclosed sealing structure is used with a piston assembly which exhausts a content. A sealing washer has a sealing hole through which a screw pillar is inserted and is configured to be formed between a piston and a screw cap of the piston assembly. The sealing ... | 04/15/2008 |
| 7357065 | Compound linear motion and rotary actuator To eliminate necessity for rotating a rotation drive mechanism against frictional resistance originated by a sealing portion of a piston when an output shaft is rotated in a component linear motion and rotary actuator. An inside cylinder tube is concentrically provi... | 04/15/2008 |
| 7267044 | Compact actuator with large thrust A manually and/or fluid-pressure operated rotary actuator is coupled with a power screw in a compact assembly to produce large linear thrust. The actuator is operated in both directions by fluid pressure or in one direction by fluid pressure and in the other by spri... | 09/11/2007 |
| 7225905 | Magnetorheological fluid damper A magnetorheological damper device is provided having an increased shear interface area per unit volume of device, which enhances the stroking force of the damper. The damper generally includes a thrust shaft comprising an external threaded surface in threaded commu... | 06/05/2007 |
| 7210720 | Timed rotation tool assembly and actuator A fluid-powered tool assembly having first and second tool members, a body, and first and second rotatable shafts. The first shaft is attached to the first tool member for rotation therewith about a first axis, and the second shaft is attached to the second tool mem... | 05/01/2007 |
| 7171889 | Swash plate tilting angle detector for a swash plate plunger type hydraulic unit A swash plate plunger type hydraulic motor is constituted such that plungers are slidably disposed in respective plunger holes of a motor cylinder, and a motor rolling member having a motor swash plate member is supported in a motor casing in such a manner that it c... | 02/06/2007 |
| 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 |
| 7111891 | Tarp covering system A tarp covering system for an open top container of a vehicle includes a pair arms assemblies stowed beneath the base of the container during travel and extendable and pivotal in a semi circular path for covering and uncovering the container. ... | 09/26/2006 |
| 7080631 | Safety fuel injection pump A fuel injection pump includes a camshaft, an eccentric cam, a cam ring, a housing and plungers. The camshaft is rotated by an engine. The cam is provided separately from the camshaft and is formed with a connecting portion connected with the main shaft. The cam rot... | 07/25/2006 |
| 7004045 | High thrust valve operator A high thrust operator for gate valves employs an inverted satellite roller screw assembly driven by an internally threaded cylinder carried within a bearing case. The cylinder is sized to provide a relief plenum within the case into which the roller screw assembly ... | 02/28/2006 |
| 6992408 | Linear drive device A linear drive device has a stator and an armature able to be moved in relation to the stator in a linear manner. The device furthermore comprises an electrodynamic linear direct drive system and a fluid power drive system. Using the two drive systems it is possible... | 01/31/2006 |
| 6966249 | Rotary actuator A rotary actuator including a tube. A piston disposed in the tube and configured for displacement there along. The piston having a spline extending radially outwardly therefrom formed by plurality of grooves and a plurality of non-grooved portions. At least some of ... | 11/22/2005 |
| 6962213 | Sleeve piston fluid motor The present invention is a cylindrical linear fluid motor comprising a plurality of reciprocating rotary piston sleeve intermediate an inner coaxial hollow drive shaft and an outer coaxial cylindrical housing. Rotating disc valves at both ends of the sleeve piston c... | 11/08/2005 |
| 6932549 | Mandrel-holding slide or sleeve pod for numerical-control machine tools In a numerical-control machine tool use is made of a mandrel-holding structure that makes it possible for the machine tool to be used to smoothing/facing and polishing purposes under utilization of traditional pan-like tools, in which the force acting on the working... | 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 |
| 6474214 | Three-position stop type swing actuator A three-position stop type swing actuator has a main piston freely moving in forward and backward directions in an axial direction within a casing, an output shaft placed at a coaxial position with the main piston in such a manner as to be fixed in an axi... | 11/05/2002 |
| 6401671 | Draw rotary engine A reciprocating piston rotary internal combustion engine; comprising a non-rotating circular cylinder engine block containing a rotor on which piston reciprocate at right angles to the direction of centrifugal force, and parallel with the rotor, and at ri... | 06/11/2002 |
| 6269642 | Variable geometry turbocharger A variable geometry turbocharger employs multiple vanes in the turbine inlet with a unison ring and integral cast wall in the turbine housing forming the nozzle walls. The unison ring incorporates actuation slots receiving tabs on the vanes for opening th... | 08/07/2001 |
| 6247390 | Hydraulically operated rotary actuator A rotary actuator that can be used in conjunction with drive stabilizers for motor vehicles. The rotary actuator includes an outer body forming a gas-tight connection for a first element capable of being turned opposite from a second element, and an inner... | 06/19/2001 |
| 6212889 | Direct acting rotary actuator for a turbocharger variable nozzle turbine A axial to rotational motion actuator employs two sets of engaged helical splines on rotational collars provides a large degree of rotary actuation from a relatively short axial stroke to provides efficient non-binding and reduced effort actuator operatio... | 04/10/2001 |
| 6145429 | Rotor assembly for rotary power device A rotor assembly for a rotary power device consists of two opposed rotor sections which when assembled in the stator of the device have limited movement parallel to the axis of rotation of the rotor assembly. Each rotor section includes through running cy... | 11/14/2000 |
| 5992222 | High pressure pump system and method of operation thereof A pump system for producing high and exactly controllable pressure levels includes a piston pump which has a piston (32) connecting to a spindle shaft (22), a spindle nut (44) on said spindle shaft, a cylinder block (34) having a bore (36) for receiving s... | 11/30/1999 |
| 5918530 | Hydraulic rotary actuator A hydraulic torque motor comprising a cylindrical housing (1), a piston (30) which can only be moved axially in the housing (1) and a rotor (20) which can only be rotated and which extends through the piston (39). The rotor (20) has a spiral groove (21) a... | 07/06/1999 |
| 5899112 | Rotary/linear converter A rotary/linear converter comprising a reciprocator having a main axis (A) and being adapted for reciprocating movement in the direction of the main axis (A) and a rotator adapted for rotating movement about the main axis (A), the converter further includ... | 05/04/1999 |
| 5803031 | Hydraulic actuator in an internal combustion engine A hydraulic actuator including a piston connected to a camshaft. First and second passages extend through the camshaft. The piston is actuated in accordance with differences in pressure applied to the piston through the passages. A bearing rotatably suppo... | 09/08/1998 |
| 5671652 | Rotary actuator A fluid powered rotary actuator having a body with first and second ends. The body has a generally cylindrical interior sidewall with a grooved, inwardly facing circumferential portion. The body is adapted for coupling to a first external member. A drive ... | 09/30/1997 |
| 5634390 | Rotary actuator Disclosed is a rotary actuator utilizing magnetic screws which are stably rotatable at a great torque with little torque variation. The rotary actuator comprising (a) a closed hollow cylinder, a piston sliding within the cylinder, and a rotary shaft which... | 06/03/1997 |
| 5609090 | Actuator with protective end cap A fluid-powered rotary actuator for providing rotary movement between first and second external members. The actuator includes a cylindrical body with first and second ends. The body is adapted for coupling to the first external member, and a shaft extend... | 03/11/1997 |
| 5590580 | Loading positioning apparatus A load positioning apparatus comprises a rodless cylinder which comprises a piston and a load-mounting table connected together by a coupling device, a feed screw turned and driven by an electric motor, and a pressurized fluid control and supply device. T... | 01/07/1997 |
| 5485760 | Ball nut and screw assemblies and methods of attaching extensions or housings to the ball nuts thereof A ball nut and screw assembly with a screw having exterior helical ball carrying groove portions separated by land portions and a co-axial nut having complemental, helical interior ball carrying groove portions separated by land portions with the same lea... | 01/23/1996 |
| 5477772 | Actuator with protective end cap A fluid-powered rotary actuator for providing rotary movement between first and second external members. The actuator includes a cylindrical body with first and second ends. The body is adapted for coupling to the first external member, and a shaft extend... | 12/26/1995 |
| 5447095 | Actuator with ring gear and method of manufacturing same A fluid-powered rotary actuator having a body with a cylindrical interior sidewall portion. A drive shaft extends generally coaxially within the body and is supported for rotation relative thereto. The shaft has a grooved, outwardly facing circumferential... | 09/05/1995 |
| 5309816 | Rotary actuator with external bearings A fluid-powered rotary actuator having a body adapted for coupling to a movable member to transfer rotational force thereto. A drive member includes a flange extending axially outward from a body first end, and a stub shaft extending coaxially within the ... | 05/10/1994 |
| 5267504 | Rotary actuator with annular fluid coupling rotatably mounted to shaft A fluid-powered rotary actuator attachable to a boom and usable with a work implement having two hydraulic actuators. The rotary actuator has a body with a drive shaft extending longitudinally therewithin. The shaft has one end located outward of the body... | 12/07/1993 |
| 5253726 | Steering assembly for utility vehicles A steering assembly for a utility vehicle having a support frame. The assembly includes a fluid-powered rotary actuator, with a body having a rotatable hollow shaft extending therewithin. An annular piston is mounted within the body about the shaft for re... | 10/19/1993 |
| 5241895 | Air-powered splined rotary actuator An air-powered actuator having a body with first and second ends, an axially transverse annular bulkhead positioned therebetween, and an output shaft with a splined exterior portion. The body includes first and second end walls with each end wall having a... | 09/07/1993 |
| 5184537 | Clamp device drive apparatus A clamp device drive apparatus for driving a clamp device engaged with a T-shaped groove slidably between a clamping position and an unclamping position, comprises a push-pull chain connected to a clamp device, a vertical housing for containing the chain,... | 02/09/1993 |
| 5054372 | Adjustable shaft actuator A fluid-powered rotary actuator having a body with first and second ends, and a shaft extending generally coaxially within the body. The shaft is supported for rotational movement relative to the body by bearing races formed on the shaft first and second ... | 10/08/1991 |
| 5046402 | Rotary to axial motion converting device with groove in piston guide The device serves to convert rotary motion to hydraulic pressure and vice versa. A piston assembly is entirely located within a cylinder, including a piston head and a piston stem fixed to the piston head. The piston assembly divides the cylinder into two... | 09/10/1991 |
