Abstract: A linear actuator is provided that includes a housing having an input member supported for rotation therein. An output member travels linearly along the input member when the input member is rotated relative to the output member. A guide rail extends along an inner surface of the housing. The output member engages the guide rail to prevent rotation of the output member.

Abstract: A linear actuator is provided that includes a housing having an input member supported for rotation therein. An output member travels linearly along the input member when the input member is rotated relative to the output member. A guide rail extends along an inner surface of the housing. The output member engages the guide rail to prevent rotation of the output member.

Abstract: A tube partial thread forming apparatus and method is disclosed. A tube is placed on the apparatus around internal die sections, which are separated by a mandrel to cause the internal die sections to engage the tube. stripper pieces are moved into engagement around the outer surface of the tube to secure and support the tube. External die sections extend through the stripper pieces and engage the tube and form partial threads thereon.

Abstract: An intensifier type of fluid actuator using air and water as working fluids therein includes first and second bodies that can be separate components or incorporated into a single structure. The first body includes a first manifold connected by a first tube to a second manifold to define an intensifier chamber, a third manifold connected by a second tube to the second manifold to define a reservoir chamber, and a fourth manifold connected by a third tube to the third manifold to define a work chamber. An intensifier piston is disposed within the intensifier chamber and has an outer surface in sealing and sliding engagement with the first tube. The intensifier rod is secured to the intensifier piston and extends through the second manifold into the reservoir chamber. The intensifier rod is movable through the third manifold into the work chamber. A reservoir piston is disposed within the reservoir chamber and has an outer surface in sealing and sliding engagement with the second tube.

Abstract: An intensifier type of fluid actuator includes multiple sensors for sensing various operational characteristics of the intensifier. The intensifier includes a first manifold connected by a first tube to a second manifold to define an intensifier chamber, a third manifold connected by a second tube to the second manifold to define a reservoir chamber, and a fourth manifold connected by a third tube to the third manifold to define a work chamber. An intensifier piston is disposed within the intensifier chamber and has an intensifier rod secured thereto that extends through the second manifold into the reservoir chamber and through the third manifold into the work chamber. A reservoir piston is disposed within the reservoir chamber and includes an opening formed therethrough, through which the intensifier rod extends. The second body includes a fifth manifold connected by a fourth tube to a sixth manifold to define a piston chamber.

Abstract: An intensifier type of fluid actuator includes a body including a first manifold connected by a first tube to a second manifold to define an intensifier chamber, a third manifold connected by a second tube to the second manifold to define a reservoir chamber, and a fourth manifold connected by a third tube to the third manifold to define a work chamber. A reservoir piston is disposed within the reservoir chamber and has an outer surface in sealing and sliding engagement with the second tube. The reservoir piston includes an inner surface defined by a central opening formed therethrough which extends from a first end of the reservoir piston adjacent to the second manifold to a second end of the reservoir piston adjacent to the third manifold. A passageway is formed in the reservoir piston which extends from the inner surface to the outer surface, thereof.

Abstract: An oil intensifier cylinder having a hollow cylindrical body. An intensifier piston is slideably positioned in the body. An intensifier rod is connected to and extends from the intensifier piston. An outer reservoir piston is slideably positioned in the body in spaced relationship with the intensifier piston. An inner reservoir piston is slideably positioned in the outer reservoir piston. The inner reservoir piston includes a bore that is disposed to allow the intensifier rod to extend through the inner reservoir piston. An oil reservoir is positioned adjacent the inner and outer reservoir pistons. The oil reservoir is positioned on sides of the inner and outer reservoir pistons that are opposite the intensifier piston. A port is disposed on the end of the oil reservoir that is spaced from the inner and outer reservoir pistons. The port has a shape that slideably and sealingly receives the intensifier rod. A work rod is slideably positioned in the body.