Power tool, battery pack, and method of operating the same

• US 8,228,029 B2
• Filed: 02/22/2008
• Issued: 07/24/2012
• Est. Priority Date: 02/23/2007
• Status: Active Grant

• Current Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Original Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Inventors: Scott, John S., Meyer, Gary D., Phillips, Michael W.
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): PIGGUSH, AARON C
• Application Number:
  US12/035,894
• Publication Number:
  US 20080207026A1
• Time in Patent Office: 1,614 Days
• Field of Search: 320/112, 320/114, 439/160
• US Class Current: 320/114
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electrical combination includes a power tool having a body, a motor supported by the body, a support portion, and a drive mechanism driven by the motor such that the drive mechanism is operable to drive a tool element. The electrical combination also includes a battery operable for coupling to the power tool via the support portion. The battery is electrically connectable with the motor to selectively supply power to the motor. A single latch is positioned on the support portion of the power tool. The single latch is moveable between a locked position to secure the battery to the power tool and an unlocked position to allow removal of the battery from the support portion of the power tool.

Claims

1. An electrical combination comprising:

a power tool including a grip formed by a pair of handle halves, a body, a motor supported by the body, a support portion, and a drive mechanism driven by the motor, the drive mechanism being operable to drive a tool element; and

a battery selectively engageable with the support portion of the power tool and electrically connectable with the motor such that the battery selectively supplies power to the motor;

wherein a single latch is positioned on the support portion of the power tool, the latch extending outwardly from a forward-most portion of the support portion for engagement with the battery, the single latch being moveable along a locking axis through a recess within the power tool between a locked position to secure the battery to the power tool and an unlocked position to allow removal of the battery from the support portion of the power tool, and wherein a biasing member is operable to bias the latch toward the locked position, the biasing member being integrally formed with the latch,

wherein the support portion further includes an actuator operable to move the latch between the locked position and the unlocked position, the actuator movable in a direction substantially parallel to a connecting plane defined between the pair of handle halves, and wherein the latch is integral to the actuator, and

wherein the latch and the actuator are supported in the recess and the recess is defined in an upper surface of the support portion, the recess opening toward the body of the power tool.

2. The electrical combination of claim 1, wherein the drive mechanism is positioned forward of the motor, and further comprising an actuator positioned forwardly on the support portion from a hand grip of the power tool and being operable to move the latch between the locked position and the unlocked position.

3. The electrical combination of claim of 1, wherein the drive mechanism is positioned forward of the motor, and wherein the recess opens through a forward end of the support portion.

4. The electrical combination of claim 1, wherein the actuator is positioned on a central portion of the support portion between projections operable to receive guide rails of the battery.

5. The electrical combination of claim 1, wherein the pair of handle halves provide a grip surface, and wherein the latch is supported between the pair of handle halves.

6. The electrical combination of claim 1, wherein the battery includes a pair of guide rails engageable with the support portion and a locking rib positioned between the guide rails, the guide rails engageable with the support portion along an insertion axis, the insertion axis generally perpendicular to the locking axis, and wherein the latch is engageable with the locking rib of the battery.

7. The electrical combination of claim 5, wherein the biasing member includes a first side engageable in a first recess defined between the pair of handle halves, and a second side opposite to the first side and engageable in a second recess defined between the pair of handle halves.

8. The electrical combination of claim 1, wherein the actuator is operable with a single finger of an operator hand to move the latch between the locked position and unlocked position, and wherein the battery includes a pair of grip surfaces positioned on opposite sides of the battery such that other fingers of the operator hand can grip the pair of grip surfaces while the single finger is operating the actuator.

9. A power tool comprising:

a grip formed by a pair of handle halves, the pair of handle halves defining a connecting plane;

a motor;

a drive mechanism driven by the motor to drive a tool element;

a body supporting the motor and the drive mechanism and having a grip surface and a support portion for receiving a removeable battery, the support portion supporting a single latch for movement relative to the support portion between a locked position to secure the battery to the support portion and an unlocked position to allow removal of the battery from the support portion;

wherein the latch is positioned on a central portion of the support portion between projections operable to receive guide rails of the battery along an insertion axis, the latch being movable along a locking axis through a recess within the power tool, the locking axis being generally perpendicular to the insertion axis; and

an actuator integrally formed with the latch and positioned on the support portion forward of the grip surface of the power tool, the actuator being operable to move the latch between the locked position and the unlocked position, the actuator movable in a direction substantially parallel to the connecting plane defined by the pair of handle halves,

wherein the latch and the actuator are supported in the recess and the recess is defined in an upper surface of the support portion, the recess opening toward the drive mechanism.

10. The power tool of claim 9, wherein the drive mechanism is positioned forward of the motor.

11. The power tool of claim 9, wherein the drive mechanism is positioned forward of the motor, and wherein the recess opens through a forward end of the support portion.

12. The power tool of claim 9, wherein the pair of handle halves together define the grip surface, and wherein the latch is supported between the pair of handle halves.

13. The power tool of claim 12, wherein the biasing member includes a first side engageable in a first recess defined between the pair of handle halves, and a second side opposite to the first side and engageable in a second recess defined between the pair of handle halves.

14. The power tool of claim 9, wherein the actuator is operable with a single finger of an operator hand to move the latch between the locked position and unlocked position, and wherein the battery includes a pair of grip surfaces positioned on opposite sides of the battery such that other fingers of the operator hand can grip the pair of grip surfaces while the single finger is operating the actuator.

15. The power tool of claim 9, wherein the support portion further includes a biasing member operable to bias the latch towards the locked position, and wherein the biasing member is integrally formed with the latch.

16. The power tool of claim 15, wherein the drive mechanism is positioned forward of the motor, and wherein at least a portion of the latch extends outwardly from a forward-most portion of the support portion for engagement with the battery.