Abstract: A caster has a yoke portion and wheel forks pivotally connected to the yoke portion at a pivot connection. The pivot connection defines a pivot axis. A wheel is rotatably connected to the wheel fork at a wheel axis. A brake lever is operatively connected to the pivot connection to pivot about the pivot axis. The brake lever moves a brake pad between an engaged position and a disengaged position as the brake lever is pivoted about the pivot axis. In the engaged position, brake pad is pressed against the wheel with a cam operatively connected to the brake lever, and wherein the disengaged position, the cam cooperates with the brake pad in a manner such that the brake pad releases from the wheel.

Abstract: Components of interest are captured on a resin column from a sample of exhaust gas from an operating vehicle. Makeup air is added to the residual exhaust gas flow exiting the resin column at a junction downstream of the resin column. Makeup air flow rate is determined using a laminar flow element and pressure and temperature gauges associated therewith. The sample and the makeup air are drawn together through a blower and the flow rate through the blower is calculated based on differential pressure across the blower and temperature of the gas drawn through the blower. The controller adjusts a proportional control valve in the makeup air line to regulate the sample flow rate, taken as the blower flow rate minus the makeup air flow rate, at a predetermined proportion of the exhaust gas flow rate.

Abstract: Components of interest are captured on a resin column from a sample of exhaust gas from an operating vehicle. Makeup air is added to the residual exhaust gas flow exiting the resin column at a junction downstream of the resin column. Makeup air flow rate is determined using a laminar flow element and pressure and temperature gauges associated therewith. The sample and the makeup air are drawn together through a blower and the flow rate through the blower is calculated based on differential pressure across the blower and temperature of the gas drawn through the blower. The controller adjusts a proportional control valve in the makeup air line to regulate the sample flow rate, taken as the blower flow rate minus the makeup air flow rate, at a predetermined proportion of the exhaust gas flow rate.

Abstract: A device and method is disclosed for allowing a combine operator, from the operator's station, to automatically transversely position a pinch-point of a concave relative to a rotor of a combine in accordance with the clearance spacing set between the concave and the rotor, thereby minimizing operator effort without sacrificing combine performance.

Abstract: A device and method is disclosed for effecting movement and extending the clearance spacing between a rotor of a combine and a concave to allow for easy removal of lodged material. The apparatus and method additionally provide a reduction in rotor actuation motor torque and an increase in rotor mechanical advantage. Finally, the apparatus and method provide a travel limit to prevent a concave from being raised into, and having contact with, a rotor of a combine.

Abstract: A device and method is disclosed for allowing a combine operator, from the operator's station, to automatically transversely position a pinch-point of a concave relative to a rotor of a combine in accordance with the clearance spacing set between the concave and the rotor, thereby minimizing operator effort without sacrificing combine performance.

Abstract: A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.