Battery-powered pump

Abstract

A self-contained pump system for supplying pressurized fluid to a remote actuator includes a handle portion adapted to be grasped by a user. The pump system also includes a brushless DC motor and a battery that has a nominal voltage of at least 60 V. The battery is operable to supply power to the motor. A 3-stage pump assembly is driven by the motor and operable to discharge hydraulic fluid that has a pressure and a flow rate.

What is claimed is: 
     
         1 . A self-contained pump system for supplying pressurized fluid to a remote actuator, the pump system comprising:
 a handle portion adapted to be grasped by a user;   a brushless DC motor;   a battery having a nominal voltage of at least 60 V and operable to supply power to the motor; and   a 3-stage pump assembly driven by the motor and operable to discharge hydraulic fluid having a pressure and a flow rate.   
     
     
         2 . The pump system of  claim 1 , further comprising,
 a controller operable to control at least one of the motor and the pump assembly; and   a control device in communication with the controller, the control device operable to receive a user input.   
     
     
         3 . The pump system of  claim 1 , wherein the handle portion is disposed above the pump assembly and balanced relative to a center of gravity of the pump. 
     
     
         4 . The pump system of  claim 1 , further comprising a roll bar spaced apart from the pump assembly. 
     
     
         5 . The pump system of  claim 1 , further comprising a housing including a cavity and a cover, the cover movable between a first position in which the cavity is accessible and a second position in which the cavity is covered. 
     
     
         6 . The pump system of  claim 1 , wherein a sound output of the pump assembly is less than 100 dB. 
     
     
         7 . The pump system of  claim 1 , further comprising a valve having a lever movable between a first position and a second position, the valve configured to direct fluid flow in a first direction when the lever is in the first position and configured to direct fluid flow in a second direction when the lever is in the second position. 
     
     
         8 . The pump system of  claim 1 , further comprising a reservoir in fluid communication with the pump assembly. 
     
     
         9 . The pump system of  claim 1 , wherein the battery has a nominal voltage of about 72 V. 
     
     
         10 . A self-contained pump system for supplying pressurized fluid to a remote actuator, the pump system comprising:
 a motor;   a battery having a nominal voltage of at least 60 V operable to supply power to the motor;   a pump assembly driven by the motor and operable to discharge hydraulic fluid having a pressure and flow rate;   a controller operable to control operation of the motor; and   a remote control device in communication with the controller, the remote control device including a user-actuated switch operable to cause a signal to be communicated to the controller to operate the motor and, thereby, the pump assembly.   
     
     
         11 . The pump system of  claim 10 , further comprising a handle portion adapted to be grasped by a user, the handle portion balanced relative to a center of gravity of the pump assembly. 
     
     
         12 . The pump system of  claim 10 , further comprising a housing including a cavity and a cover, the cover movable between a first position in which the cavity is accessible and a second position in which the cavity is covered. 
     
     
         13 . The pump system of  claim 10 , further comprising a valve having a lever movable independently of the remote control device between a first position and a second position, the valve configured to direct fluid flow in a first direction when the lever is in the first position and configured to direct fluid flow in a second direction when the lever is in the second position. 
     
     
         14 . The pump system of  claim 10 , further comprising a bar extending along a side and over a top of the motor. 
     
     
         15 . The pump system of  claim 10 , wherein the motor is a brushless DC motor and the pump assembly is a 3-stage pump assembly. 
     
     
         16 . The pump system of  claim 10 , further comprising a reservoir in fluid communication with the pump assembly. 
     
     
         17 . The pump system of  claim 10 , wherein the battery has a nominal voltage of about 72 V. 
     
     
         18 . A method of pumping hydraulic fluid, the method comprising:
 supplying power from a battery having a nominal voltage of at least 60 V to a brushless DC motor;   with the motor, driving a 3-stage pump assembly; and   with the pump assembly, discharging hydraulic fluid having a pressure and flow rate.   
     
     
         19 . The method of  claim 18  further comprising, actuating a remote switch to cause a signal to be communicated to a controller to operate the motor and, thereby, the pump assembly. 
     
     
         20 . The method of  claim 18  further comprising, actuating a lever coupled to a valve of the pump assembly to one of a first position configured to direct fluid flow in a first direction and second position configured to direct fluid flow in a second direction.