Lpg high pressure mobile pumping unit

Claim 1

A system for pumping a liquid solvent to be supplied at variable flow characteristics without lugging of the pump system, comprising a vessel for carrying said liquid solvent, said vessel mounted upon a vehicle powered for self-propulsion by an engine contained therein, a transmission connected to said engine and to a drive shaft for transmitting Power from the engine to the drive shaft, said drive shaft connected to an axle of the vehicle for transmitting the vehicle engine power thereto, means for disengaging the drive shaft from said axle, a high pressure and an intermediary pressure pump carried by the vehicle, said intermediary pump capable of pumping to a pressure in the range of about 5 to 150 pounds per square inch, means for separately engaging said high pressure pump to said drive shaft, means for engaging said intermediary pressure pump to drive means independent of said drive shaft and associated with the transmission of the vehicle, and conduit means interconnecting said vessel to said intermediary pressure pump and said intermediary pressure pump to said high pressure pump so that liquid solvent may be variably pumped from said vessel through and from the intermediary pump and through the high pressure pump to a substantially higher pressure as a result of use of said vehicle engine power, said high pressure pump being capable of delivering independently the demands of the pump system and means for controlling both RPM and gear ratio of said engine power while engaged to said pumps to vary pumping conditions.

Claim 2

A system for pumping a liquid solvent to be supplied at variable flow characteristics without lugging of the pump system, comprising a vessel for carrying said liquid solvent, said vessel mounted upon a vehicle powered for self-propulsion by an engine contained therein, a transmission connected to said engine and to a drive shaft for transmitting Power from the engine to the drive shaft, said drive shaft connected to an axle of the vehicle for transmitting the vehicle engine power thereto, means for disengaging the drive shaft from said axle, a high pressure and an intermediary pressure pump carried by the vehicle, said intermediary pump capable of pumping to a pressure in the range of about 5 to 150 pounds per square inch, means for separately engaging said high pressure pump to said drive shaft, means for engaging said intermediary pressure pump to drive means independent of said drive shaft and associated with the transmission of the vehicle, and conduit means interconnecting said vessel to said intermediary pressure pump and said intermediary pressure pump to said high pressure pump so that liquid solvent may be variably pumped from said vessel through and from the intermediary pump and through the high pressure pump to a substantially higher pressure as a result of use of said vehicle engine power, said high pressure pump being capable of delivering independently the demands of the pump system and means for controlling both RPM and gear ratio of said engine power while engaged to said pumps to vary pumping conditions.