Battery powered hydraulic tool

• US 7,111,488 B2
• Filed: 06/21/2005
• Issued: 09/26/2006
• Est. Priority Date: 02/19/2002
• Status: Expired due to Term

• Current Assignee: Hubbell, Inc.
• Original Assignee: FCI Americas Technology Incorporated (FCI)
• Inventors: Lefavour, John D., Chadbourne, Christopher G., Steltzer, Gordon L., Montminy, Armand T.
• Primary Examiner(s): JONES, DAVID B
• Application Number:
  US11/158,735
• Publication Number:
  US 20050229671A1
• Time in Patent Office: 462 Days
• Field of Search: 724/530.2, 724/530.3, 724/531.5, 724/531.6, 301/80, 297/51, 604/77, 604/79
• US Class Current: 72/453.16
• CPC Class Codes: B25B 27/10 inserting fittings into hoses
• CPC Class Codes: B25B 27/146 Clip clamping hand tools
• CPC Class Codes: B25F 5/005 Hydraulic driving means
• CPC Class Codes: H01R 43/0427 fluid actuated hand crimping tools
• CPC Class Codes: Y10T 29/53226 Fastening by deformation

Abstract

A battery powered hydraulic tool including a frame; a battery connected to the frame; a motor connected to the frame and adapted to be powered by the battery; and a hydraulic pump connected to the motor by a gear reduction transmission. The motor and gear reduction transmission are adapted to output a torque of the least about 160 oz-in with the gear reduction transmission being adapted to provide a gear reduction of between about 8:1 to about 15:1 or less, and the hydraulic pump being adapted to output at least about 6000 psi of pressure or more.

Claims

1. A hand-held battery powered hydraulic tool comprising:

a frame;

a hydraulic pump in the frame;

an electric motor connected to the frame and operably coupled to the hydraulic pump to drive the hydraulic pump, wherein the electric motor is adapted to operate with a nominal voltage that is approximately 18 Volt DC or greater; and

a rechargeable battery connected to the frame and coupled to the electric motor, wherein the battery comprises a voltage of at least about 18 Volts.

2. A hand-held battery powered hydraulic tool as in claim 1 further comprising a gear reduction transmission between the pump and the motor.

3. A hand-held battery powered hydraulic tool as in claim 2 wherein the gear reduction transmission is adapted to provide a fixed gear reduction of about 10:

1 to about 15;

1 and the hydraulic pump is adapted to output at least about 6000 psi of pressure.

4. A hand-held battery powered hydraulic tool as in claim 2 wherein torque output of the motor and the gear reduction transmission is at least about 260 oz-in of torque.

5. A hand-held battery powered hydraulic tool as in claim 2 wherein the gear reduction transmission is adapted to provide a gear reduction of at least about 12:

1.

6. A hand-held battery powered hydraulic tool as in claim 2 further comprising a ram movably connected to the frame, the ram being moved by hydraulic pressure from the hydraulic pump, wherein the frame comprises a hydraulic conduit system, and wherein the hydraulic conduit system, the hydraulic pump, the motor and the gear reduction transmission are adapted to move the ram at a speed of at least about 0.007 ft/sec.

7. A hand-held battery powered hydraulic tool as in claim 1 wherein the hydraulic pump is adapted to output at least about 8000 psi of pressure.

8. A hand-held battery powered hydraulic tool as in claim 1 wherein the hydraulic pump comprises a pump piston with a diameter of less than about 0.35 inch.

9. A hand-held battery powered hydraulic tool as in claim 1 further comprising at least one system for protecting the motor from a current spike by preventing a current draw of more than a predetermined amperage.

10. A hand-held battery powered hydraulic tool as in claim 9 wherein the at least one system for protecting the motor from a current spike comprises two systems.

11. A hand-held battery powered hydraulic tool comprising:

a frame;

a hydraulic pump in the frame;

an electric motor connected to the frame and operably coupled to the hydraulic pump to drive the hydraulic pump, wherein the electric motor is adapted to operate at a nominal voltage of about 18 Volt DC or greater; and

a rechargeable battery connected to the frame and coupled to the electric motor, wherein the battery comprises a voltage of at least about 18 Volts.

12. A hand-held battery powered hydraulic tool as in claim 11 wherein the hydraulic pump comprises a pump piston with a diameter of less than about 0.4 in., wherein the hydraulic pump can generate at least about 6000 psi pressure, and wherein the motor and a gear reduction transmission are adapted to generate at least about 160 oz-in of torque.

13. A hand-held battery powered hydraulic tool as in claim 11 wherein torque output of the motor and a gear reduction transmission between the motor and the pump is about 270–

280 oz-in of torque.

14. A hand-held battery powered hydraulic tool as in claim 11 further comprising a gear reduction transmission between the motor and the pump which is adapted to provide a fixed gear reduction of between about 12:

1 to about 15;

1.

15. A hand-held battery powered hydraulic tool as in claim 11 wherein the hydraulic pump is adapted to output at least 8000 psi of pressure.

16. A hand-held battery powered hydraulic tool as in claim 11 further comprising a ram movably connected to the frame, the ram being moved by hydraulic pressure from the hydraulic pump, and wherein the hydraulic fluid conduit, the hydraulic pump, the motor and a gear reduction transmission are adapted to move the ram at a speed of about 0.007 ft/sec or greater.

17. A hand-held battery powered hydraulic tool as in claim 11 further comprising at least one system for protecting the motor from a current spike by preventing a current draw of more than a predetermined amperage.

18. A hand-held battery powered hydraulic tool as in claim 17 wherein the at least one system for protecting the motor from a current spike comprises two systems.

19. A hand-held battery powered hydraulic tool comprising:

a frame;

a hydraulic pump in the frame;

an electric motor connected to the frame and operably coupled to the hydraulic pump to drive the hydraulic pump, wherein the electric motor is adapted to operate at a nominal voltage of at least 18 Volt DC; and

a rechargeable battery connected to the frame and coupled to the electric motor, wherein the battery comprises a voltage of at least about 18 Volts.