Abstract: Fluid cylinder of the repairable type having a plurality of tie rod members to retain a tubular member between a pair of end cap members is constructed so that the O-rings or gaskets normally used to seal the tubular member to the end caps can be eliminated. The tubular member is formed of a material such as stainless steel which is harder and has a higher yield strength that the material of the end caps, which is preferably an aluminum alloy. The mating surfaces are machined to be very smooth and flat so that the relatively thin wall of the tube will cause deformation of the end caps within their elastic limit, thus providing a metal to metal seal which permits the parts of the cylinder to be assembled and reassembled without danger of leakage. A surface finish on the mating parts of 32 microinches appears to be quite satisfactory.

Abstract: Compact, low cost connector system for flexible tubing is adapted to removably connect a length of flexible plastic tubing for rotational but not axial movement to a recessed opening in a body member such as a pneumatic valve, a fitting, or an air cylinder. A generally cylindrical, hollow plastic sleeve member surrounds the tubing, and is firmly anchored to it by a U-shaped metal retaining clip which is slidably movable in, and retained by, a pair of facing slots located near the outer end of the sleeve member. The slots are located in each of two legs of the sleeve which are spaced from each other except at the sleeve's inner end where they are joined. The sleeve member is assembled to the recessed opening by squeezing its legs together to allow opposed projecting tabs on each of the legs to enter the opening. The legs are then released so the tabs can snap into, and be retained by, a radially extending recess means in the wall of the opening.

Abstract: Compact, low cost connector system for flexible tubing is adapted to removably connect a length of flexible plastic tubing for rotational but not axial movement to a recessed opening in a body member such as a pneumatic valve, a fitting, or an air cylinder. Preferably, a cylindrical sleeve member having transverse slots extending completely through opposed walls of the member is pre-positioned in a stepped recessed opening in axially spaced relationship with an elastomeric O-ring sealing member. The sleeve member is preferably retained in a fixed relation relative to the body member by a U-shaped clip. When one desires to attach a length of tubing, the U-shaped clip is removed and the tubing is inserted into the sleeve and O-ring such that its tip portion goes beyond the O-ring into a small central recessed aperture formed in the body member.

Abstract: Fluid power motor construction provides for an encompassing guard tube or cylinder to be spaced around the entire cylindrical body section which accommodates the reciprocating piston member in order to preclude any harmful denting to such body section. The construction utilizes retaining rings to anchor the end caps and is especially adapted to facilitate the initial assembly of the motor and its subsequent repair while permitting the maintenance of close tolerances on the length of the piston stroke.

Abstract: An improved fluid power motor construction provides for an encompassing guard tube or cylinder to be spaced around the entire cylindrical body section which accommodates the reciprocating piston member in order to preclude any harmful denting to such body section. The guard cylinder in the present improved constructions is also typically used to serve multiple structural functions, as for example, in one embodiment, it can be used to hold the end portions of the body section tightly to the end cap sections. In a tie rod type of fluid motor constructions, the guard tube will serve as a longitudinal spacer between the end portions of the unit, while with respect to a special repairable form of motor unit the outer guard tube will serve as the tying compression-tension member between the end sections.