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8074778 |
Clutch and brake latch mechanism
A clutch including: a first piston displaceable to operate a clutch pack; a second piston; a first fluid chamber partially formed by the pistons, wherein the second piston is displaceable by fluid...
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7707924 |
Linear actuator
A groove is provided to the rear of an inner wall of a cylinder. A locking ram capable of freely sliding in a radial direction and a cam rod having a profile changing with a transition from the...
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7530613 |
Apparatus for connecting and disconnecting two objects
An apparatus for connecting and disconnecting two objects comprises: a housing formed as a hollow type, and having one closed end to which a first object is connected and another opened end; a...
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7481161 |
Plunger-cylinder assembly
A plunger-cylinder assembly for a press including a plunger which is accommodated at least in part in a cylinder while separating the interior of the cylinder into two partial chambers along the...
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7437872 |
Object separating apparatus using gas
An object separating apparatus uses gas and has a hollow housing with a closed end connected to a first object, and an opened end. An axially movable cylinder is installed at an inner space of the...
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7316177 |
Hydraulic hand pump with locking device
A method and apparatus is provided that includes a hand pump having a handle locking mechanism, a counter bored nut, pivoting links, and unloading valve assembly. The unloading valve assembly...
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7299739 |
Hydraulic cylinder
A fluid pressure cylinder has a piston rod 18 fixed to a piston 26 and projecting outside a cylinder body 23. A lock surface 43 inclining to a radial direction of the piston rod 18 is formed in an...
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7216581 |
Piston locking actuator
A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least...
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6832540 |
Locking hydraulic actuator
A locking hydraulic actuator has a cylinder and a main piston that is movable from an extend position to a retract position by a hydraulic circuit. The actuator has a locking mechanism that...
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6782799 |
Double acting hydraulic cylinder with axial locking device
A double-acting hydraulic actuator with an axial locking device has a cylinder chamber defined by two coaxial cylindrical walls of different diameters interconnected by a frustoconical wall. A...
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6631670 |
Device and a unit for locking the sliding of the rod of a linear actuator
The locking device comprises a plurality of rolling wedging members consisting of diablo-shaped rollers with two cylindrical end portions and an intermediate portion which is concave according to a...
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6615703 |
Hydraulic or pneumatic cylinder
A pneumatic or hydraulic cylinder (10) having a bore (12) cooperating with a piston (18). Extending from the piston (18) is a piston rod (37). There is further provided a pawl (26) which is...
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6594993 |
Hydraulic driving device and system for a vehicle
Hydraulic driving device with a hydraulic motor and a bearing arrangement in which the output shaft of the hydraulic motor is supported. Typically, the bearing arrangement is axially supported on...
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6412473 |
Rate shaped fluid driven piston assembly and fuel injector using same
A hydraulically actuated fuel injector includes an injector body that defines an actuation fluid passage, a low pressure area and a nozzle outlet. A piston having a hydraulic surface is positioned...
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6186047 |
Device for locking the sliding of the rod of a linear actuator and a linear actuator provided with the device
The locking device comprises resilient repulsion means (58) which react between a fixed body (16) and one or more rolling members (42) and which tend to urge these members in the direction of...
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6164186 |
Jack for bolting and unbolting
A jack (1) has a jack body (2) with a peripheral wall (3) which forms a jack chamber (4). Two pistons (5a, 5b) attached to piston rods (6) are movably mounted in the jack chamber. The jack (1) has...
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6071096 |
Pneumatic cylinder, in particular for actuating fume extraction valves in fume and heat extraction plants
A pneumatic cylinder for actuating fume extraction valves in fume and heat extraction plants has a piston (2) that may be actuated from both sides with at least one working surface and that can be...
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6004092 |
Swinging arm loading refuse collection vehicle arm restraint
A side loading refuse collection vehicle has a lift arm extendible and rotatable relative to the vehicle, the lift arm carrying grabber apparatus at an end for grasping a refuse container which may...
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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...
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5761984 |
Braking device for a fluid power actuator
A fluid pressure operated braking device for a piston rod. The braking device includes a clamp sleeve and a cam member spring biased axially in a direction to actuate the clamp sleeve to a clamp...
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5697286 |
Fluid pressure unit with brake means
A motor or pump includes a stator and a rotor supported for rotation with respect to the stator by a bearing arrangement. The rotor has a cylinder block thereon having radial cylinder bores...
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5558408 |
Vehicle brake system
Disclosed is an air-applied, mechanically-held brake assembly and a vehicle air brake system employing the same. The air brake system typically includes a push-pull or hand-brake valve for park and...
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5456160 |
Method for reducing seal stiction in a hydraulic cylinder
A method of reducing seal stiction in a hydraulic cylinder is provided comprising the steps of providing a hydraulic cylinder, having a housing, a piston, and a seal, providing apparatus for...
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5406879 |
Actuator lock
An actuator lock is provided to prevent movement of an actuator until the actuator lock is released. A first member of the lock is movable in response to fluid pressure within a chamber to move...
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5402866 |
Brake assembly with new locking mechanism
Disclosed is an air-applied, mechanically-held brake assembly and a vehicle air brake system employing the same. The brake assembly applies and releases the brake upon the supply and exhaust,...
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5277101 |
Rodless cylinder apparatus
The rodless cylinder includes at least a cylinder tube and a piston, but it has no piston rod that is indispensable in the conventional cylinders. The article carrier is connected via the piston...
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5253736 |
Railway brake actuator
A railway brake actuator which provides both service and parking braking comprises a cylinder having an operating cavity. A piston assembly in the operating cavity has a stepped bore forming second...
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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...
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5184465 |
Landing gear drag strut actuator having self-contained pressure charge for emergency use
An actuator for raising and lowering aircraft landing gear in accordance with the extended and retracted state of the actuator includes a cylindrical casing, a piston assembly slidable along the...
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5176227 |
Railway service and parking brake actuator
A brake actuator for a railway brake which provides both service and parking braking comprises a cylinder having an operating cavity. A piston assembly extends into the operating cavity and has a...
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5097748 |
Hydraulic locking cylinder with throttled supply of fluid during unlocking stage
A hydraulic cylinder that locks into position has a housing (1) with at least one pressure connection (7) and a piston (3) and rod (6) that travel tight in an out of the housing. The locking...
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5095808 |
Sequential remote control plug release system
A sequential remote control plug release system allows actuation of plug release plungers and manifold valves associated with a cementing plug container only in a predetermined sequence. With...
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5090509 |
Interlock device, especially for a pressure-medium actuator of the axial-piston type
An interlock device for a pressure-medium actuator, having a locking slide received in a housing and with an adjusting slide arranged transversely relative to the said locking slide and coupled...
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5056418 |
Self-adjusting automatic locking piston for RAM blowout preventers
An improved self-locking piston for use in ram blowout preventers has a hollow cylindrical outer piston which slidably contains an inner locking piston. The inner locking piston has a tapered,...
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5052277 |
Hydraulic cylinder for braking elements of vehicles
In an hydraulic cylinder for vehicle braking elements, a clamping piston (1) moved in a housing (3) by hydraulic pressure acts relative to a brake lining carrier bearing a brake lining, e.g., in...
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5050484 |
Hydraulic actuator with locking mechanism
A hydraulic actuator comprising a cylinder formed with an axial cylinder chamber, a main piston provided in the cylinder chamber and dividing the chamber into a first chamber and a second chamber...
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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...
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5038896 |
Brake cylinder for rail vehicles
In a brake cylinder (1) for vehicle brake systems a service and a parking brake are provided within a common housing (25). The parking brake (41) acts on a brake actuating member (37) of the brake...
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4981069 |
Cylinder locking device
A cylinder locking device comprises a thick cylindrical brake member whose inner diameter is slightly smaller than the outer diameter of a piston rod to be locked. The cylindrical brake member is...
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4969627 |
Rod locking device
The improved blowout preventer ram tail rod locking device of the present invention includes a housing, a body movable in the housing, having a threaded rod and coacting with the outer end of the...
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4951552 |
Locking cylinder
A hydraulic actuator including an actuator cylinder and a ram slidable therein from a retracted position to an extended position. This ram has an axially extending chamber positioned in an end...
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4854223 |
Pneumatic or hydraulic drive for opening and closing of doors
The invention is directed to a penumatic or hydraulic drive for opening and closing of doors, in which the linear motion of a double-acting piston 5 driven by a pressure medium is converted into a...
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4809588 |
Hydraulic piston and cylinder assemblies
A piston and cylinder assembly for a vehicle hydraulic system has a retaining device comprising an insert acting between a piston and the cylinder bore in which it works, the insert having a...
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RE32885 |
Air brake with collet locked push rod and air supply system
An air brake includes a service brake chamber which actuates a push rod. A collet brake chamber is partially defined by a collet brake diaphragm. A locking collet is mounted to the collet brake...
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4785716 |
Pneumatic cylinder and brake mechanism therefor
A pneumatic cylinder having an elongated cylinder member, a reciprocally movable piston, transfer means for transferring reciprocal movement of the piston to a work piece and a brake mechanism...
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4784044 |
Pressure actuated axial locking
The present device is intended to lock a member, such as a tool, substantially without play into a form-locked position which can be released only by a fluid pressure intentionally applied to the...
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4781102 |
Locking, bearing and actuating apparatus
The apparatus comprise a generally tubular outer element, a generally cylindrical inner element disposed therewithin and sized relative thereto to provide a generally annular operating space...
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4779513 |
Pneumatic cylinder with rod braking and decelerating mechanism
A pneumatic cylinder device having a decleration mechanism. The pneumatic cylinder device has a pneumatic cylinder including a cylinder accomodating a piston movable in the cylinder in response to...
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4742758 |
Self-locking, fluid operated actuator
The present invention relates to a fluid-operated actuator, constituted by a cylinder and by a double-effect piston, provided with a device suitable to automatically locking the same piston at the...
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4712471 |
Actuator locking mechanism
A hydraulic actuator with reduced interior volume includes a locking mechanism engageable with the main ram of the actuator to hold it in a fully retracted position without backlash. The locking...
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