Battery operated hydraulic compression tool with rapid ram advance
AssigneeFCI Americas Technology, Inc.
InventorsGeorge T. Heskey, John D. Lefavour, Gordon L. Steltzer
Life of this patent
Estimating the term…
Abstract
A battery operated hydraulic compression tool comprising a frame; a hydraulic fluid reservoir connected to the frame; an electric motor driven hydraulic pump connected to the hydraulic fluid reservoir; a ram movably connected to the frame; and a multi-speed ram advancement system for advancing the ram in at least two different rates of movement on the frame. The advancement system includes a rapid advance actuator located directly against the ram, and a hydraulic bypass system located between the pump and the ram for conduiting hydraulic fluid past the rapid advance actuator to the area of the frame holding the ram.
Claims23
A battery operated hydraulic compression tool comprising:
- a frame;
- a hydraulic fluid reservoir connected to the frame;
- an electric motor driven hydraulic pump connected to the hydraulic fluid reservoir;
- a ram movably connected to the frame;
- and
- a multi-speed ram advancement system for advancing the ram in at least two different rates of movement on the frame, the advancement system comprising:
- a rapid advance actuator located directly against the ram, hydraulic fluid from the pump being pumped against the rapid advance actuator;
- a suction conduit located between the hydraulic fluid reservoir and an area of the frame holding the ram;
- and
- a hydraulic bypass system located between the pump and the ram for conduiting hydraulic fluid past the rapid advance actuator to an area of the frame holding the ram.
A battery operated hydraulic compression tool comprising:
- a frame;
- a hydraulic fluid reservoir connected to the frame;
- an electric motor driven hydraulic pump connected to the hydraulic fluid reservoir;
- a ram movably connected to the frame;
- a hydraulic fluid conduit system in the frame between the pump and the ram;
- and
- a mechanical actuator provided in the conduit system for contacting and pushing against a rear end of the ram, wherein the conduit system is adapted to conduit hydraulic fluid from the pump against both the rear end of the ram and a rear end of the mechanical actuator.
A method of advancing a ram in a hydraulic compression tool comprising steps of:
- actuating an electric motor in the tool to actuate a hydraulic pump of the tool to move the ram relative to a frame of the tool at a first rate of movement comprising hydraulic fluid pushing against a first pushing surface connected to the ram to push the ram forward;
- and
- automatically switching movement of the ram to a second slower rate of movement when the ram encounters a predetermined resistance to forward movement on the frame, wherein the step of automatically switching comprises a bypass valve in the tool opening to allow hydraulic fluid to be pumped by the pump into an area having a second relatively larger pushing surface for pushing the ram forward at the second slower rate.
A hydraulic compression tool comprising:
- a frame having a hydraulic fluid conduit system therein;
- an electric motor driven hydraulic pump connected to the hydraulic fluid conduit system of the frame;
- a ram movably connected to the frame;
- and
- a ram advancement system for advancing the ram on the frame, the advancement system comprising:
- an actuator located against the ram, hydraulic fluid from the pump being pumped through the hydraulic fluid conduit system against the actuator;
- and
- a hydraulic bypass system located between the pump and the ram for conduiting hydraulic fluid through the hydraulic fluid conduit system past the rapid advance actuator to an area of the frame holding the ram.
A hydraulic compression tool comprising:
- a frame;
- a ram movably connected to the frame;
- a hydraulic fluid conduit system in the frame;
- an electric motor driven hydraulic pump connected to the hydraulic fluid conduit system of the frame;
- and
- a mechanical actuator provided in the conduit system for contacting and pushing against a rear end of the ram, wherein the conduit system is adapted to conduit hydraulic fluid against both the rear end of the ram and a rear end of the mechanical actuator.
Dependencies are inferred from the claim text.