Cordless chop saw

• US 6,523,447 B2
• Filed: 08/14/1998
• Issued: 02/25/2003
• Est. Priority Date: 09/26/1997
• Status: Expired due to Fees

• Current Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Inventors: Judge, Albert H.
• Primary Examiner(s): RACHUBA, MAURINA T
• Application Number:
  US09/134,135
• Publication Number:
  US 20020157516A1
• Time in Patent Office: 1,656 Days
• Field of Search: 834/713, 834/681, 834/683, 834/861, 834/85, 834/89, 834/90, 835/81
• US Class Current: 83/471.3
• CPC Class Codes: B23D 45/024 the saw blade being adjustable according to depth or angle of cut B23D45/022 takes precedence
• CPC Class Codes: B23D 45/028 the saw carriage being mounted on a pivoted lever
• CPC Class Codes: B23D 45/044 the saw blade being adjustable according to angle of cut B23D45/025 takes precedence
• CPC Class Codes: B27B 27/04 arranged perpendicularly to the plane of the saw blade
• CPC Class Codes: Y10T 83/7607 Normal to plane of cut
• CPC Class Codes: Y10T 83/762 Angularly relative to plane of cut; e.g., miter
• CPC Class Codes: Y10T 83/7697 Tool angularly adjustable relative to work-support
• CPC Class Codes: Y10T 83/7705 Adjustable angular relationship
• CPC Class Codes: Y10T 83/7772 Angular relative to previous path
• CPC Class Codes: Y10T 83/7788 Tool carrier oscillated or rotated
• CPC Class Codes: Y10T 83/8773 Bevel or miter cut

Abstract

A chop saw includes a base, a rotatable table disposed on the base a saw unit pivotably connected to the table, and a rechargeable battery, preferably NiCd of at least 14 volts, mounted on the motor housing of the saw unit.

Claims

1. A chop saw comprising:

a base;

a table rotatably attached to the base;

a fence assembly disposed on the base;

a saw unit pivotably connected to the table and movable between a first lower position towards the base in order to cuttingly engage a workpiece disposed on the table, and a second upper position away from the base, the saw unit comprising a blade, a motor for driving the blade, and a motor housing covering the motor; and

a battery having a battery housing, the battery housing being removably attached to and disposed on the motor housing and the battery being electrically connected to said motor.

2. The saw of claim 1, wherein the table rotates about a first axis of rotation.

3. The saw of claim 1, wherein the saw unit is pivotally connected to the table.

4. The saw of claim 3, wherein the saw unit rotates about a bevel axis.

5. The saw of claim 4, wherein the table rotates about a first axis of rotation.

6. The saw of claim 5, wherein the bevel axis is substantially perpendicular to the first axis of rotation.

7. The saw of claim 1, wherein the saw unit rotates about a bevel axis.

8. The saw of claim 1, wherein the saw unit further comprises a support arm pivotally connected to the base, and at least one rod connected to the support arm.

9. The saw of claim 8, wherein the at least one rod is fixedly connected to the support arm.

10. The saw of claim 8, wherein the blade is connected relative to the at least one rod, so that the blade can linearly move relative to the support arm.

11. The saw of claim 8, wherein the motor is connected relative to the at least one rod, so that the motor can linearly move relative to the support arm.

12. The saw of claim 8, wherein the saw unit further comprises a second rod connected to the support arm.

13. The saw of claim 12, wherein the two rods are coplanar.

14. The saw of claim 12, wherein the two rods are disposed in a vertical plane.

15. The saw of claim 1, wherein the battery is rechargeable.

16. The saw of claim 1, wherein the battery has a battery chemistry selected from the group consisting of nickel cadmium, nickel metal hydride, lithium and lead-acid.

17. The saw of claim 1, wherein the battery has a voltage of at least 14 volts.

18. The saw of claim 1, wherein the saw unit is connected to the table via a pivot junction.

19. The saw of claim 18, wherein the saw unit comprises a handle for moving the saw unit between the first and second positions.

20. The saw of claim 19, wherein the battery is disposed between the handle and the pivot junction.

21. The saw of claim 19, wherein the battery is disposed near the handle.