Hydraulic tools, systems for tools, and methods of use or control of same

A hydraulic drive system configured to execute a sequence of operations, the tool comprising:

• a motor;
• a pump coupled to the motor;
• hydraulic fluid driven by the pump upon activation thereof;
• a reservoir for the hydraulic fluid, the reservoir in fluid communication with the pump;
• a chamber in fluid communication with the hydraulic fluid upon activation of the pump;
• a ram movably positioned at least partially in the chamber according to the hydraulic fluid and pressure thereof;
• a primary trigger configured to cause, upon actuation thereof, activation of the motor thereby causing:
• the pump to move hydraulic fluid from the reservoir into the chamber thereby extending the ram;
• a control system;
• and
• at least one sensor in communication the control system,
• wherein, when the primary trigger is user actuated and the ram is extended, the pump continues to pump fluid, under at least partial control by the control system, until a threshold condition is determined by the control system using the at least one sensor, and
• wherein the control system is configured to override user action on the primary trigger in the event of the threshold condition being determined by the control system.

A hydraulic drive system configured to execute a sequence of operations, the tool comprising:

• a motor;
• a pump coupled to the motor;
• hydraulic fluid driven by the pump upon activation thereof;
• a reservoir for the hydraulic fluid, the reservoir in fluid communication with the pump;
• a chamber in fluid communication with the hydraulic fluid upon activation of the pump;
• a ram movably positioned at least partially in the chamber according to the hydraulic fluid and pressure thereof;
• a primary trigger configured to cause, upon actuation thereof, activation of the motor thereby causing:
• the pump to move hydraulic fluid from the reservoir into the chamber thereby extending the ram;
• a control system;
• a pressure transducer that sends a signal to the control system indicating a certain pressure has been reached, which, in combination with at least one other variable, then causes the control system to turn off the motor;
• a solenoid actuated valve in fluid communication with the chamber, wherein, the solenoid actuated valve opens upon being activated, and the chamber decompresses as the hydraulic fluid flows from the chamber to the reservoir;
• and
• at least one sensor in communication the control system,
• wherein, when the primary trigger is user actuated and the ram is extended, the pump continues to pump fluid, under at least partial control by the control system, until a threshold condition is determined by the control system using the at least one sensor.