Labconco Corporation

Allis-chalmers Corporation

Deutz-allis Corporation

Lowell L Kuhn

Gary P Roepke

James F Ptacek

Stephen Gerard Miggels

Mark S Schmitz

Tim Xing

A freeze dryer having a collector chamber is provided with a sensor for detecting the presence of moisture in the chamber so that the vacuum pump cannot be operated if moisture is present. The refrigeration system can also be deactivated. This precludes moisture from being pulled into the vacuum pump where it will mix with pump oil and shorten the life of the pump. The moisture sensor is also coupled with a warning circuit which advises the operator that the system is inoperable and is capable of displaying the reason for inoperability.

Method and apparatus for determining presence of moisture in freeze dryer vacuum line

A method of evaporating liquid from a liquid and solid solution in a container within a chamber involves moving the container in an orbital motion such that the solution forms a vortex configuration within the container and also involves directing gas into the container. The gas is directed into the container from a point source above the liquid in the container to decrease the partial pressure on the solution thereby increasing the evaporation rate of the liquid from the solution. To further increase evaporation of the liquid, heat may be applied to the container. The temperature within the chamber may be regulated by sensing the temperature within the chamber and controlling the application of heat to the container in response to the temperature sensed within the chamber. An alternative method of evaporating liquid from a liquid and solid solution in a container within a chamber also involves moving the container in an orbital motion, but further involves drawing a vacuum within the chamber rather than directing gas into the container.

Vortex evaporation

A vortex evaporator having a holder for holding at least one container presents a chamber wherein liquid is evaporated from a liquid and solid solution in a container. The vortex evaporator also includes a drive mechanism, coupled to the holder, for moving each container in an orbital motion within the chamber to cause the solution in the container to form a vortex configuration. The vortex evaporator further includes a gas supply system for directing gas into the container to increase the evaporation rate of the liquid and a control system for controlling operation of the vortex evaporator. In an alternative embodiment, a vacuum supply system may be utilized instead of the gas supply system. Further, the vortex evaporator will preferably include a heater, at least one liquid level sensor, a heat sensor and a motion dampening assembly all located within the chamber.

Vortex evaporator

A combine is provided with a ground speed control having manual and automatic operating modes. In the automatic operating mode, ground speed is adjusted to achieve a predetermined level of combine harvesting efficiency. A manual lever for controlling the ground speed includes a lost motion connection with a ground speed control member permitting it to be shifted between automatic and manual operating modes. Manual movement of the lever in a speed controlling direction while harvesting in the automatic operating mode will diestablish the automatic operating mode and reestablish a manual operating mode. Subsequent release of the lever allows resumption of an automatic operating mode.

Automatic vehicle ground speed control convertible to manual operation

A self-propelled agricultural harvester is provided with an operator's cab which has a combined roof and visor in which environmental components and accessories are mounted.

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Independence, MO, United States of America

Lowell L Kuhn