Sauer Gmbh

Thomas A Rosskopf

Michael A Betz

Martin J Oosterhuis

Larry R Walker

The multiple pump apparatus includes first and second variable displacement closed circuit pumps. The multiple pump apparatus pressurizes fluid to be subsequently supplied to drive load devices. The first and second pumps each have fluid communication lines connected to load devices through flow control valves. Each of the pumps has a swashplate for varying its displacement. The swashplates are of the over-center type, enabling each pump to supply pressurized fluid in either direction, thus providing both forward and reverse function to the load devices. The first pump has its fluid communicating lines connected to fluid communicating lines between first and second two-position four-way flow control valves. The opposite side of the first flow control valve has fluid communicating lines connected to a load device which drives a harvesting mechanism, in this case a rotor motor. The opposite side of the second flow control valve has communication lines connected to the circuit for driving the load device for the propel function, in this case, the propel motor(s). In this way, the combined flow from the two pumps enables the vehicle to attain high speed operation for roading without the need for a single large fluid displacement propel pump to support this performance requirement.

Hydrostatic circuit for harvesting machine

A kit for converting a base transmission having a mid PTO shaft and a detachable original equipment rear cover into an optional configuration transmission having a rotatable mid PTO shaft and a rotatable rear PTO shaft that are both selectively drivable such that they can be commanded by the operator to rotate simultaneously or individually. The kit includes a conversion rear cover for replacing the original equipment rear cover, a rear PTO cover with an aperture therein mounted to the conversion rear cover, a rear PTO shaft rotatably supported in the aperture and extending into the conversion rear cover, and a three position selector assembly mounted on the conversion rear cover and the PTO rear cover. When installed on the base transmission, the selector assembly of the kit allows the operator to cause the rotation of the mid PTO shaft only, both the mid and rear PTO shafts simultaneously, or the rear PTO shaft only.

Kit for a power takeoff assembly for converting same to include

A vehicle transmission assembly includes a power means, a clutch connected to the power means and having an output power shaft, and a plurality of gears and substantial alignment. The gears include a first gear on the power shaft meshed with a second gear mounted on a first idler shaft. The second gear driving a third gear mounted on another idler shaft. The third gear drives a fourth gear mounted on a first PTO shaft. A second PTO shaft is operatively connected to the first shaft. A three position selector assembly on the first shaft selectively powers the PTO shafts simultaneously or individually. The method of connecting a single PTO shaft transmission assembly includes adding a second PTO shaft to said power means, and imposing a multi-position selector assembly to the gears to permit said PTO shafts to be operated together or individually.

Method of converting power takeoff assembly to include selectively

A vehicle transmission assembly includes a source of rotary power, a clutch connected to the power source and having an output power shaft, and a plurality of gears in substantial alignment. The gears include a first gear on the output power shaft meshed with a second gear mounted on a first sub-shaft. The second gear drives a third gear mounted on an idler shaft. The third gear drives a fourth gear mounted on a first PTO shaft. A second PTO shaft is operatively connected to the first sub-shaft. A three position selector assembly on the first shaft selectively powers the PTO shafts simultaneously or individually.

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Panora, IA, United States of America

Thomas A Rosskopf