Abstract: A pyrolysis apparatus and pyrolysis method are provided. The pyrolysis apparatus comprises a microwave generator, a waveguide which is coupled to the microwave generator and in which a standing wave can be generated, and a fluid pipe, through which a fluid can be guided in a fluid guidance direction transverse to the direction of propagation of the standing wave. A pyrolysis cell, in which the fluid is acted upon by the standing electromagnetic wave, is formed in the fluid pipe. In order to achieve a high rate of degradation of molecules to be pyrolysed, the pyrolysis cell is limited in the direction of an outlet by a metal grid.

Abstract: Improvement in a combination valve including check valve and pressure relief valve portions for regulating fluid flow pressure and direction in a hydraulic circuit, wherein a valve seat includes, in addition to a central aperture, a plurality of peripherally-spaced axial cross-port orifice holes, of same or differing diameter and a plurality of intersecting, circumferentially-spaced, radial, semicircular holes; a spring cap including four adjoining axial portions of differing outer diameters, with a first portion being a protrusion that locates an end of a relief valve compression spring, a second portion having flat outer tool locating surfaces used for rotating the spring cap for axial adjustment relative to a valve stem, a third portion having a reduced radial wall thickness for easy crimping thereof relative to a valve stem, and a fourth portion having a coaxial recess for centering and physically retaining one end portion of a check valve compression spring.

Abstract: A compact, integrated hydrostatic transmission without reduction gearing wherein the pump and motor are contained within a single housing, and an output shaft extends from the housing inline with a shaft of the motor. The output shaft is directly connectable to a wheel of a vehicle. The pump and motor share a common sump within the housing in which pump and/or motor leakage is collected.

Abstract: A speed adjusting mechanism that includes a return to neutral feature for returning a control member of a pump to neutral after the control member has been moved to a forward or reverse position. The speed adjusting mechanism is characterized by the use of a torsion spring that enables the mechanism to be composed of just a few parts.

Abstract: A hydrostatic transmission system having a pump and a motor, and a manually controlled bypass valve for creating a short circuit that includes the motor and not the pump, the bypass valve being located closer to the motor than the pump. In a preferred embodiment the bypass passage is located within a housing of a motor of a hydrostatic transmission system and includes a manually controlled valve member that when open and closed respectively permits and blocks flow of fluid between the supply and return line. More particularly, the bypass valve may be integral with the motor of the hydrostatic transmission, and the motor may be a gerotor motor.

Abstract: In order to improve a pyrolysis apparatus, comprising a microwave generator, a waveguide which is coupled to the microwave generator and in which a standing wave can be generated and a fluid pipe, through which a fluid can be guided in a fluid guidance direction transverse to the direction of propagation of the standing wave, wherein a pyrolysis cell, in which the fluid is acted upon by the standing electromagnetic wave, is formed in the fluid pipe, with which a high rate of degradation of molecules to be pyrolysed can be achieved it is suggested that the pyrolysis cell be limited in the direction of an outlet by a metal grid.