Abstract: A vapor fraction containing hydrogen and at least one hydrocarbon selected from the group consisting of C.sub.1 to C.sub.4 hydrocarbons is separated from a hydrogen-rich refinery off-gas feed to give a liquid product fraction. The refinery off-gas is fed to and compressed in a compressor/expander having compressor means and expander means mounted and driven on a common shaft, and then cooled and partially condensed to form a two-phase fluid in a heat exchanger followed by separation of the vapor and liquid product phases of the fluid in a separator or a separator/fractionation column stabilizer unit. The separated vapor phase is transmitted to the compressor/expander unit wherein the vapor is depressurized and partially condensed, thereby driving the compressor.

Abstract: A vapor fraction containing hydrogen and at least one hydrocarbon selected from the group consisting of C.sub.1 to C.sub.4 hydrocarbons is separated from a hydrogen-rich refinery off-gas feed to give a liquid product fraction. The refinery off-gas is fed to and compressed in a compressor/expander having compressor means and expander means mounted and driven on a common shaft, and then cooled and partially condensed to form a two-phase fluid in a heat exchanger followed by separation of the vapor and liquid product phases of the fluid in a separator or a separator/fractionation column stabilizer unit. The separated vapor phase is transmitted to the compressor/expander unit wherein the vapor is depressurized and partially condensed, thereby driving the compressor.

Abstract: A control valve linkage arrangement which is closely adjacent a vehicle operator and which allows easy access to a compartment upon which the operator sits. A control linkage (12) is disclosed wherein positioning of the member (30) to be controlled determines a control signal. The linkage (12) is connected to the valve control member (30) and may be pivoted relative to the valve control member (30) along a plane generally containing the valve control member (30) without axial movement of the said member (30). The linkage (12) can also be moved axially thereby moving the control member (30) axially without pivoting the linkage (12) relative to the control member (30).

Abstract: A lift truck having a frame which includes parallel beams having forward ends that terminate in bifurcated ends forming upper and lower portions with U-shaped openings therebetween adapted to receive a front drive axle assembly therein for forward removal from the frame. Co-planar transverse plates are secured to the upper and lower portions of the beam ends and have hanger plates including upward opening hook removably attached thereto for supporting a mast assembly thereon.

Abstract: A motor mounting assembly is separable into two portions between the frame and the motor enabling one portion of the mounting assembly to remain resiliently connected to the vehicle frame while the other portion is removed with the motor. Reinstallation of the motor is greatly simplified as the separable portions of the mounting assembly can readily be repositioned and reconnected without the misalignment problems encountered during installation of motors using conventional mounts which must be engaged at the vehicle frame.