Abstract: Examples include an apparatus for restraining an aircraft during engine acceleration, the apparatus including: a collet shaft that is configured to attach to the aircraft, a rod that is configured to attach to a runway, and a release mechanism that is configured to restrain the collet shaft to the release mechanism and configured to release the collet shaft in response to the release mechanism receiving an electric current.

Abstract: A support mechanism that has a body, a motor located on the body, a first rod that is triggered by the motor so as to be able to rotate clockwise or counter clockwise around its own axis, a transfer member connected at one end to the first rod, a second rod connected to the transfer member is able to make a radial rotational movement around its own axis together with the first rod by the transfer member, a holder that is located on the body surrounds the second rod and is able to rotate around its own axis and move linearly along a direction that the second rod extends, and at least one bearing that is located on the second rod moves towards or away from the weight upon triggering of the first rod by the motor and contacts the weight for supporting the weight from at least one point.

Abstract: A nose landing gear system is disclosed. In various embodiments, the nose landing gear system includes an electro-hydraulic actuator configured to raise and lower a nose shock strut assembly; a first electro-mechanical actuator configured to steer the nose shock strut assembly; and a second electro-mechanical actuator configured to open and close a fairing door.

Abstract: A ram air turbine (RAT) actuator piston can include a body defining a piston structure having an inner cavity. The piston can include one or more damping holes axially defined through the body to the inner cavity and a lock rod hole defined axially through the body to the inner cavity. The lock rod hole can have a larger flow area than one or more of the one or more damping holes. The lock rod hole can be configured to receive a lock rod of a RAT actuator to at least partially block flow through the lock rod hole when the lock rod is in a locked position. The one or more damping holes can be configured to allow flow through the damping holes in the locked position to allow the RAT actuator piston to move within the RAT actuator in the locked position to dissipate vibratory loads.

Abstract: There is provided an actuator for an aircraft thrust reverser, comprising a first member, a second member movable relative to the first member, a third member movable relative to the first member and the second member, and a lock system configured to selectively lock the second member to the third member in a first stage of actuation, and the first member to the second member in a second, separate stage of actuation.

Abstract: The invention relates to a device for displacing and locking movable switch parts (1), comprising a hydraulic piston, which is formed by a rod (6) and cooperates, via coupling or locking members (8), with an axially displaceable sleeve (5) intended to receive the radially displaceable coupling or locking members (8), The displaceable sleeve (5) is coupled with the movable switch parts (1) and an externally arranged tube (4), at least partly overlapping the sleeve (5) and the rod (6). A hydraulic duct (11) is connected to the externally arranged tube (4), on a front face of the sleeve (5), facing away from the coupling site for the movable switch parts (1).

Abstract: A locking mechanism for a linear actuator comprising a piston rod arranged for generally linear movement between a fully retracted state and a fully extended state. The locking mechanism comprises a piston follower coupled to the piston rod for movement therewith, and a latching member moveable between a non-locked state and at least one locked state in which the latching member obstructs the movement of the piston follower such that the piston rod is prevented from adopting the fully retracted state.

Abstract: A locking device for a movement unit supported displaceably relative to and along a longitudinal axis of at least one guide rod, comprises a pair of clamping members which have each a clamping opening. Each clamping opening has an inner surface for receiving the guide rod. Each clamping member has a foot end and a head end and is pivotable about an axis to assume a first position, in which the inner surface is in frictional braking contact with the guide rod, and a second position for allowing free relative movement of the clamping members and the guide rod. The pair of clamping members has also a corresponding pair of control surfaces facing each other at their head ends. There is an actuation device that acts onto the pair of clamping members to move them from one of their positions to the other. This actuation device includes: a device for imparting movement which has a pressure exerting surface for exerting pressure in a direction towards the clamping members.

Abstract: A locking device for a linear movement unit (1) ensures quick and precise locking by providing a guidance when two clamping members (9) pivot into a clamping position substantially free from any play. The guidance is provided by at least first and second guide surfaces (12, 13 or 14, 15) so that the clamping members engage a guide rod (4) simultaneously to lock the unit on it, thus avoiding any spluttering.

Abstract: In a brake device of a linear moving body, a brake member is provided with a hole and a rod is fitted to the hole in clearance fit, and the brake member is moved slantwise and rotational moment is produced in the brake member thereby brake is applied to the rod in relative motion. The brake member is arranged movable slantwise using position as fulcrum remote from the axial center of the rod, and notched portions having width smaller than diameter of the hole are formed at symmetric positions within the hole along a plane including the fulcrum and the axial center of the rod. In this brake device, rotational force (rotational moment) is supplied to the brake member, and drag is produced at a fitting surface within the hole and frictional force due to the drag is made brake force and frictional force due to the drag of the fitting surface is made reaction force of the rotational force.

Abstract: A locking mechanism for an actuator prevents the unauthorized operation of the actuator and also permits a viewer to determine whether the actuator is in a locked open, locked closed or unlocked position. The invention utilizes a clear cover guard which is positioned and locked on an actuator body which is attached to a housing. The actuator body comprises threaded bores which permit a bolt to be inserted into the actuator body until it contacts an integral locking cam and driver arm rotatably disposed within the actuator body. The bolt contacts the locking cam in order to selectively lock the integral locking cam and driver arm in a desired position.

Abstract: A device for maintianing a load raising linkage in a raised position. A power member is provided for raising and lowering the linkage. A locking member is pivotally connected to the load raising linkage. The locking member is movable between a lock position and an unlock position. An anchor is connected to the linkage. A releasable member is carried by the locking member. The releasable member engages the anchor and maintains the locking member in the unlock position. Upon pivoting the locking member to the lock position, the releasable member can also engage the power member and maintain the locking member in the lock position.

Abstract: The ON behavior of a pressure switch or a valve (134) differs from its reset behavior by virtue of the fact that the movable pressurized part (126) is connected to one of the parts of a magnet assembly (112, 114) which are movable in relation to one another.

Abstract: 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 rotary motion of a spindle 2 through a piston rod 6 and a helical gear box 3. Herein a blocking lever 10 supported in a stationary manner is provided, which in the closed position of the door engages under the action of a spring 18 at a part 11 connected with a piston 5, wherein said blocking lever secures the piston in its end position and is held in its open position counter to the force of an additional spring 15 by a power cylinder 14 acted upon by the pressure means.

Abstract: A spring operated valve actuator with variable return force includes a compact spring mechanism with a short but very powerful closing characteristic. The energy provided by the spring mechanism is applied during the entire movement of the valve, with varying forces localized according to particular needs. The spring mechanism and a movable piston member are mechanically and drivingly interconnected by a variable reduction mechanism.

Abstract: A fluid actuator includes a lock mechanism for releasably locking the actuator against movement, and a lock release lever engageable by a lock piston upon application of system pressure thereto to release the lock mechanism. The lock mechanism includes an axially movable lock member for respectively engaging and disengaging the lock mechanism depending on its position. Attached to the movable lock member is a proximity sensor target which moves with the axially movable lock member toward and away from a proximity switch to provide an electrical signal indicating the locked or unlocked condition of the lock mechanism in accordance with the proximity of the target to the switch. A cover may also be provided for respectively concealing or exposing the target depending on the position of the axially movable member to provide a visual indication of the unlocked or locked condition of the lock mechanism.

Abstract: A locking device for a circumferentially grooved reciprocating member is disclosed. In one embodiment the locking device includes a housing, through which the reciprocating member passes, having a pair of spring biased locking elements and a release element disposed therein. Locking is achieved by insertion of the locking elements into the reciprocating member circumferential groove. Unlocking is effected by displacement of the release element towards the locking elements along a line perpendicular to the reciprocating member to withdraw the locking elements. In an alternative embodiment a spring biased retention pin is provided to selectively engage and retain the release element in proximity to the locking elements. An annular ring may be disposed about the reciprocating member adjacent the circumferential groove to displace and disengage the retention pin from the release element.

Abstract: A device to provide for mechanical motion between a locking element in a hydraulic actuator to an external indication device, comprises:(a) a housing defining a first generally longitudinally extensive passage, and a lock element in longitudinal alignment with the first passage,(b) a lever located to pivot in that first passage, the lever having first extent projecting toward the lock element which constrains pivoting of the lever,(c) and structure mounting the lever for such pivoting and defining a fluid barrier, whereby fluid at one side of the barrier closest to said first passage and lock element is isolated from communication with second extent of the lever at the opposite side of the barrier, and whereby motion of the locking element relatively away from the housing relieves said constraint of lever pivoting.

Abstract: An activating apparatus or device, for example for a valve in a liquid conveying system operated by means of a vacuum. The activating apparatus comprises a normally latched or locked operating device which by means of a spring, or the like, is connected to a force accumulator. The force accumulator is moved by the influence of vacuum and thereby tightens the spring which, when a lock arm disengages from the operating device, is released so that the operating device is moved, and thereby opens the valve.

Abstract: A fluid actuator including a lock mechanism for locking the actuator against movement in one position and a fluid operated sequence-power valve which when actuated by fluid pressure releases the lock mechanism and then ports such fluid pressure directly to the actuator to cause movement thereof in the desired direction following release of the lock mechanism.

Abstract: Actuator includes a lock mechanism for locking the actuator against movement in one end position, and a separate lock release assembly exteriorly mounted on the side of the actuator housing. The lock release assembly includes a toggle linkage directly engageable with the movable lock part to disengage the lock when a suitable force is applied to the toggle linkage exteriorly of the actuator. A lock spring is located immediately between the movable lock part and actuator piston for resetting the lock as the actuator nears such one end position.

Abstract: A fluid pressure valve actuator of the type utilized for controlling the operation of a ball-type valve is provided and includes a housing for supporting an actuating shaft for axial movement relative to the housing. A piston assembly is mounted within the housing and is responsive to fluid pressure for moving the shaft axially to an actuated position. A latch member is provided in the actuator for engagement with a shoulder portion on the actuating shaft to define an actuated position. In accordance with the present invention, the latch member is mounted for selective axial movement relative to the housing. This permits the axial position of the latch member to adjust the change in the actuating position of the shaft thereby compensating for wear in the internal components of the valve. In the preferred embodiment of the invention, a ratcheting element such as an adjustable collet lock is utilized as the means for supporting the latch member.

Abstract: A piston braking device for a hydraulic or pneumatic cylinder, employing an annular braking plate loosely fitted on the piston rod of the cylinder and rockable into a tilted position relative to the piston rod upon actuation by a plate drive means, and a brake control mechanism operative to apply a counter pressure on the braking plate to maintain or reset the braking plate in a normal right angle position, the braking plate having braking portions on its inner periphery which braking portions are pressed against the circumference of the piston rod to apply friction brakes thereto in a manner which increases the braking force in proportion to the propelling force of the piston rod.

Abstract: A mold-locking or catching device which comprises a support on one mold half or part, a bellows anchored to this support at one side of the bellows, a hook engageable with the rim of the other mold half or part and carried by the other side of the bellows and means for swinging the hook laterally into and out of engagement with the rim of the other mold half when the bellows is activated by fluid pressure or depressurized respectively.

Abstract: A boom stop having a elongated tubular body portion is mounted on the rod end of one of the hydraulic lift cylinders of a skid steer loader. When the boom of the skid steer loader is lifted, the boom stop is carried outwardly with the rod end of the cylinder, the opposite end of the boom stop dropping into a plane adjacent the rod end of the cylinder when the hydraulic cylinder is almost fully extended. Thus the boom stop is interposed between the outer end of the cylinder body and the rod end of the cylinder to retain such lift cylinder in an extended position under loading conditions.

Abstract: A locking device for a reciprocating rod brake actuator movable between brake applying and brake releasing positions includes a pivoted pawl movable between locking and releasing positions for releasably locking the rod in its brake applying position. A spring normally biases the pawl to its locking position, and a fluid cylinder is operative when pressurized for moving the locking device to its releasing position. The rod is movable toward and away from the pawl, and is normally supported against movement away from the pawl by a releasable support. Release of the support frees the rod for free movement between its brake applying and releasing positions even though the pawl is in its locking position.

Abstract: A work locating apparatus having a tension member actuated by an actuating member, particularly an actuating piston, via a starting stroke and a working stroke in which a pneumatic cylinder constitutes a control means and a mechanical step-up mechanism is operable between the control means and the tension member with the actuating member abutting directly the tension member by the starting stroke and the step-up mechanism by the working stroke of the tension member.