A fluid pressure cylinder has a sensor attachment tool mounted thereon. A holder holds the position sensor in a rail structure extending in an axial direction of a cylinder tube and is secured by screwing to a rod cover or a head cover in an arm part provided to one end of the holder.

A hydraulic actuator is disclosed that comprises a first, fixed portion and a second portion movable relative to the first portion. The second portion comprises a hydraulic actuating device for actuating a component, and the actuator further comprises an intermediate member configured to interconnect the first portion with the second portion and permit movement of the second portion relative to the first portion. The intermediate member is configured to convey hydraulic fluid to the hydraulic actuating device of the second portion through a body of the intermediate member.

In the present invention, both ends of a cylinder are blocked by end caps, two pistons that reciprocate within the cylinder due to fluid pressure are disposed inside the cylinder, and a space surrounded by the two pistons and the inner wall of the cylinder is connected to a fluid supply/exhaust port provided an end cap of the cylinder via a coiling tube position inside the cylinder.

A connection device for connecting an electrical or electronic component, which is accommodated in a thick-walled housing part, through a stepped bore in the wall of the housing part, includes a connection part having a stepped cylindrical body having a first cylindrical portion with a first outer diameter corresponding to the diameter of an inner bore portion of the stepped bore and a second cylindrical portion with a second outer diameter corresponding to the larger diameter of an outer bore portion, and a separate, essentially cylindrical contact carrier part fixed in the base body, which has contact pins protruding from an inner end face located on the inside of the thick-walled housing part. A fastener detachably fastens the connection part inserted in the stepped bore in the bore of the housing part.

A telescopic device having a housing and a rod is slidably mounted within a bore of the housing. First and second bearings provide sliding engagement between the rod and the housing. The first bearing is mounted relatively close to the open end of the bore and the second bearing is mounted relatively far from the open end of the bore relative to the first bearing. The second bearing is annular in shape with a central axis, the bearing has a radially outer mounting surface of arcuate cross-section and a radially inner bearing surface for sliding engagement with an outer surface of the rod and wherein the inner sidewall is provided with an annular groove having a second mounting surface of arcuate cross-section to house and retain the second bearing.

A hydraulic piston actuator, which may be used for an aircraft nacelle assembly, includes a housing, a piston, an end gland, and a bearing ring. The housing is concentrically disposed along an axis. The piston is adapted to axially reciprocate within the housing. The end gland is disposed radially between the housing and the piston. The bearing ring is disposed radially between the end gland and the piston.

A hydraulic actuator is disclosed that comprises a first, fixed portion and a second portion movable relative to the first portion. The second portion comprises a hydraulic actuating device for actuating a component, and the actuator further comprises an intermediate member configured to interconnect the first portion with the second portion and permit movement of the second portion relative to the first portion. The intermediate member is configured to convey hydraulic fluid to the hydraulic actuating device of the second portion through a body of the intermediate member.

Cylinder sensor assembly includes a sensor with pressure pipe extending from the first sensor axial face of a sensor body, an annular face seal adapted to be disposed between the first sensor axial face and an endcap external axial face, and a sensor retention assembly. The sensor retention assembly includes a plurality of fasteners and a retainer body having a retainer distal face, a plurality of through holes and an internal chamber with a radially-extending flange extending into the internal chamber with the internal chamber open to the retainer distal face. The sensor body is disposed within the internal chamber adjacent the radially-extending flange.

Retention systems for retaining a gland is provided. A hydraulic actuator may comprise a cylinder closed at an end by a gland, wherein the gland comprises a gland body having a bearing flange disposed within an interior volume of the cylinder, a lock ring retainer disposed between the gland body and the cylinder and contacted with the bearing flange, and a lock ring coupled between the lock ring retainer and a lock ring channel of the cylinder.

A head end seal assembly for a hydraulic cylinder may include a cylinder seal carrier having a seal carrier bore with a main seal groove and a coating ring groove adjacent the main seal groove. A main seal disposed within the main seal groove is fabricated from a resilient material and engages a rod outer surface of a rod to substantially prevent leakage of pressurized fluid from the hydraulic cylinder. A coating ring disposed within the coating ring groove is fabricated from a thermoplastic polymer such as Teflon and engages the rod outer surface such that portions of the thermoplastic polymer are deposited into indentations on the rod outer surface as the rod slides past the coating ring to smooth the surface and reduce abrasion between the rod and the main seal. A second coating ring on the opposite side of the main seal may coat the rod as it moves in the opposite direction.