US 12,467,485 B2
Hydraulic pump with electronic adjustable pressure setting
Jean Mauricio Uruena Montoya, Wauwatosa, WI (US); and Mathew R. Rentmeester, Wauwatosa, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed on Jan. 8, 2024, as Appl. No. 18/407,283.
Claims priority of provisional application 63/478,838, filed on Jan. 6, 2023.
Prior Publication US 2024/0229832 A1, Jul. 11, 2024
Int. Cl. F15B 15/20 (2006.01); F04B 17/03 (2006.01); F04B 49/08 (2006.01); F04B 49/06 (2006.01)
CPC F15B 15/20 (2013.01) [F04B 17/03 (2013.01); F04B 49/08 (2013.01); F04B 49/065 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A hydraulic pump comprising:
a bladder that stores hydraulic fluid;
a manifold in fluid communication with the bladder and including a work port;
a pump assembly that pumps hydraulic fluid from the bladder through the work port;
a user interface including a user input having an up button and a down button; and
a controller in communication with the user interface and the pump assembly, the controller:
storing a current operating pressure in memory;
updating the current operating pressure based on input from the user interface; and
controlling the pump assembly to pump the hydraulic fluid from the bladder through the work port until the current operating pressure is reached.
 
9. A method of operating a double acting hydraulic pump including a pump assembly, a bladder, two work ports, a controller, and a user interface, the method comprising:
retrieving a current operating pressure from memory of the controller;
controlling the pump assembly to pump hydraulic fluid from the bladder through one of the two work ports to a hydraulic tool until the current operating pressure is reached; and
updating the current operating pressure based on input from the user interface by increasing the current operating pressure when an up button of the user interface is pressed and decreasing the current operating pressure when a down button of the user interface is pressed.