Halliburton Company

William S Butler

Richard C Farris

Charles T Bomgardner

Harry B Kalina

An improved piston shaft seal assembly and seal arrangement therein for end-of-car hydraulic cushioning units including an improved seal retainer, an improved first oil scraper abutting the improved seal retainer, an improved reinforced oil seal abutting the improved first seal retainer and a second improved oil seal abutting the improved reinforced oil seal. Optionally, the improved piston shaft seal assembly may include an annular spacer.

Cushioning unit shaft seal arrangement

A shock absorber comprising a cylinder, cylinder head having a relief check valve therein including an annular valve spool, relief valve ball, spring support, valve spring and valve cap, piston, piston head, outer case, foot valve body, dust cover, piston bellows and pivot bushing assemblies.

Aeration preventing shock absorber

A railcar transport for use with a truck tractor towing means comprising a trailer having an elongated rectangular frame having the rails thereon located on the longitudinal side frame members, having a railcar ramp secured to one end thereof, having a power winch mounted on the other end thereof to pull railcars thereon, having a rail alignment mechanism on one end the trailcar ramp mounted between the rails thereon, and having railcar ramp articulation means which are mounted either at the ramp pivot point or therebelow.

Railcar transporting trailer

A piston and cylinder motion dampening device having a spiral groove metering, an orificed two-way pressure relief valve or a screw-on spring or an over-extension limiting seal retainer. A push-together method of assembling a piston and cylinder motion dampening device. A motion dampening device with a baffle chamber.

Method of assembling a shock absorber employing a coil spring

A piston and cylinder motion dampening device having spiral groove metering, an orificed two-way pressure relief valve or a screw-on spring or an over-extension limiting seal retainer. A push-together method of assembling a piston and cylinder motion dampening device. A motion dampening device with a baffle chamber. A method of dampening the motion between two members utilizing a piston and cylinder motion dampening device having spiral groove means, a fixed orifice means and a two-way valve means to meter the fluid contained in the motion dampening device.

Truck damping

A piston and cylinder motion dampening device having spiral groove metering, an orificed two-way pressure relief valve, a screw-on spring and an over-extension seal retainer.

Fluid truck snubber

A fabricated backstop/buffstop comprising a pair of parallel, juxtaposed side plates, each side plate having a central opening therein, a forward transverse member having each end thereof freely positioned in a portion of the central opening of each side plate of the pair of side plates and having a slot located in the center of the forward transverse member, and a rear transverse member having each end thereof freely positioned in a portion of the central opening of each side plate of the pair of side plates.

Fabricated backstop/buffstop

A piston and cylinder motion dampening device having spiral groove metering, an orificed two-way pressure relief valve or a screw-on spring or an over-extension limiting seal retainer. A push-together method of assembling a piston and cylinder motion dampening device. A motion dampening device with a baffle chamber.

Growing community of inventors

Burleson, TX, United States of America

William S Butler