An orthopedic screw extractor device including a shaft, an end portion about a first end of the shaft for securing to a handle, and a screw extracting tip about a second end of the shaft opposite the first end. The screw extracting tip further includes a generally frustoconical shape having a side at an angle of about 5 to 15 degrees relative to a longitudinal axis of the screw extracting tip. The screw extracting tip further includes first, second and third screw threads and first, second and third flutes circumferentially spaced about the screw extracting tip and extending across an entire length of the screw extracting tip. Each of the screw threads has a lead of about 0.07 to 0.12 inches, a pitch of about 0.02 to 0.04 inches, a thread angle of about 40 to 50 degrees, and a depth of about 0.01 to 0.02 inches.

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 a cushion mechanism of a gas cylinder, when the pressure of a gas in a first pressure chamber is less than or equal to a prescribed pressure, a valve body cuts off communication between the upstream side and downstream side of a discharge flow passage by mean of the biasing force of a spring member. In addition, when the pressure of the gas exceeds the prescribed pressure, the valve body is displaced to the downstream side of the discharge flow passage against the biasing force, thereby enabling communication between the upstream side and the downstream side of the discharge flow passage.

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 dual-direction piston-based actuator housing assembly has a housing disposed over a hollow cylindrical liner configured to accept within a movable piston. A compression block having a pin engagement hole is disposed adjacent to a proximal end of the liner. A tension strap is disposed over the compression block, the tension strap starting from a first end near the proximal end of the liner, extending around the engagement hole and back to a second end near the proximal end of the liner. An overwind extends over the first and second ends of the tension strap, over the compression block, and over the proximal end of the housing. A tension clip is disposed at the distal end of the liner and embedded within the housing. The housing, tension strap and overwind may be a continuous fiber reinforced plastic composite and the compression block may be a chopped fiber filled thermoplastic composite.

The present invention provides a seal housing (102) for releasable attachment to a hydraulic or pneumatic cylinder (101), the seal housing (102) being suitable for retaining a seal assembly and the seal housing (102) comprising a generally annular main body (201). The annular main body (201) defines an annular disc-shaped portion (202) having an upper surface (203), a lower surface (204), an outer peripheral edge (205) and an inner edge (206). Said inner edge (206) bounds a circular opening (207) extending the full height of said annular disc shaped portion (202) between said upper and lower surfaces (203, 204). The annular main body (201) further defines an annular collar portion (208) upstanding from the upper surface (203) of said disc shaped portion (202) adjacent said peripheral edge (205) of said disc shaped portion (202), said annular collar portion (208) extending height-wise from a base end (209) joined to said disc-shaped portion (202) to an upper end (210), and width-wise from an inner edge (211) to an outer peripheral edge (212), said inner edge (211) of said annular collar portion (208) bounding a circular opening (213) extending the full height of said annular collar portion (208). The annular main body (201) also further defines an annular flange portion (216) extending height-wise downwardly from the lower surface (204) of said disc-shaped portion (202) from a base end (217) joined to said lower surface (204) of said disc-shaped portion (202) to a distal end (218), and width wise from an inner edge (219) to an outer edge (220).

The present invention pertains to an air cylinder (10) in which flow rate controllers (24, 24A) are built into a head cover (14) and a rod cover (16), said flow rate controllers (24, 24A) being provided with a first flow rate adjustment part (28) connected between a port (14a, 16a) and a cylinder chamber (12c), a second flow rate adjustment part (32) provided adjacent to the first flow rate adjustment part (28), and a pilot check valve (38) connected in series to the second flow rate adjustment part (32). In response to the pressure of pilot air, the pilot check valve (38) switches between a state in which the passage of exhaust air from the cylinder chamber (12c) is permitted and a state in which the passage of exhaust air is prevented.

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.

Methods, apparatus, systems and articles of manufacture are disclosed that produce a pneumatic actuator end cap having an integral volume booster. An example pneumatic actuator end cap includes a first cavity to provide a first fluid passageway to receive a pressurized fluid from a source external to the pneumatic actuator end cap, a second cavity to provide a second fluid passageway to route the pressurized fluid to an internal chamber of a pneumatic actuator in which a piston is disposed, and a third cavity containing a fluid valve to control a flow of the pressurized fluid between the first fluid passageway and the second fluid passageway.

An actuator is provided. The actuator includes a first body defining an interior, a second body disposed about the first body and defining space between an exterior of the first body and an interior of the second body, a plunger including a head sealably disposed in the interior and a rod connected to the head and sealably extended through the first and second bodies and first and second fluid systems. The first fluid system is insulated from the space. A first fluid is moved relative to the interior for causing the plunger to extend or retract by way of the first fluid system. A second fluid is moved through the space by way of the second fluid system.