Clamping devices for compound miter saws

• US 5,730,434 A
• Filed: 01/26/1996
• Issued: 03/24/1998
• Est. Priority Date: 01/26/1996
• Status: Expired due to Fees

• Current Assignee: Home Depot USA Incorporated (The Home Depot, Inc.)
• Original Assignee: Emerson Electric Company
• Inventors: Eccardt, Curtis J., Schoene, Keith R.
• Primary Examiner(s): Jones, Eugenia
• Assistant Examiner(s): Goodman, Charles
• Application Number:
  US08/592,263
• Time in Patent Office: 788 Days
• Field of Search: 269/88, 269/76, 269/249, 83/464, 83/466, 83/452, 83/468.2, 83/468.7, 83/471.3, 83/467.1, 83/859, 144/287
• US Class Current: 269/88
• CPC Class Codes: B23D 47/04 of devices for feeding, positioning, clamping, or rotating work
• CPC Class Codes: B25B 5/10 using screws
• CPC Class Codes: B25B 5/102 with at least one jaw sliding along a bar
• CPC Class Codes: B25B 5/163 Jaws or jaw attachments
• CPC Class Codes: Y10T 83/7567 Manually actuated drive means
• CPC Class Codes: Y10T 83/758 With means to adjust clamp position or stroke
• CPC Class Codes: Y10T 83/95 Machine frame

Abstract

A miter saw clamp accessory to facilitate vertical and/or horizontal clamping of a workpiece against a supporting worktable and fence is disclosed. The miter saw clamp accessory includes a pair of extension rods extending laterally outwardly from one end of a frame with a clamp support mounted on such extension rods. A clamp shaft is adapted to be mounted in a top opening of the clamp support for vertical clamping or in a side opening of the clamp support for horizontal clamping of the workpiece. A clamp assembly is mounted on the clamp shaft and includes a connecting arm for adjustable mounting of a clamping arm having a workpiece clamp at one end that is arranged for confronting opposed positioning relative to the frame for vertical clamping or to the fence for horizontal clamping of the workpiece. A miter saw crown molding jig accessory is also disclosed for mounting on a miter saw frame. This accessory includes a shaft mounted immediately adjacent to the worktable fence and a clamp head that is adjustably mounted on the shaft and includes a vertically extending bearing surface and a horizontally extending upper shoulder which overhangs the vertically extending bearing surface. The clamp head is moved on the shaft until the horizontally extending upper shoulder rests on a top edge of the crown molding while the vertically extending bearing surface engages a side edge of the crown molding in alignment with the worktable fence.

Claims

1. A miter saw clamp accessory to facilitate vertical clamping of a workpiece against a supporting frame as well as horizontal clamping of the workpiece against a fence mounted on the supporting frame, comprising:

a pair of extension rods extending laterally outwardly from one end of the frame;

a clamp support mounted on said pair of extension rods, said clamp support including top and side openings extending generally transverse to one another;

a clamp shaft mounted in the top opening of said clamp support to facilitate vertical clamping of the workpiece against the supporting frame, said clamp shaft being movable from the top opening to the side opening of said clamp support to facilitate horizontal clamping of the workpiece against a fence mounted on the supporting frame; and

a clamp assembly mounted on said clamp shaft, said clamp assembly including a clamping arm, a connecting arm for adjustable mounting of the clamping arm, and an associated workpiece clamp at one end of the clamping arm, the workpiece clamp vertically clamping the workpiece against the supporting frame when the clamp shaft is mounted in the top opening of the clamp support and horizontally clamping the workpiece against the fence when the clamp shaft is mounted in the side opening of the clamp support.

2. The miter saw clamp accessory as defined in claim 1 wherein said clamping arm is threaded for adjustable threaded engagement relative to said connecting arm and includes a manually engageable knob at an end opposite to said workpiece clamp for manual adjustment of said threaded clamping arm and workpiece clamp relative to said frame or fence.

3. The miter saw clamp accessory as defined in claim 1 wherein said clamp support is adjustably mounted on said pair of extension rods.

4. The miter saw clamp accessory as defined in claim 1 wherein said connecting arm is adjustably mounted on said clamp shaft.

5. The miter saw clamp accessory as defined in claim 1 including a rod bracket mounted on said extension rods adjacent an inside face of said frame for securing said extension rods to said frame.

6. The miter saw clamp accessory as defined in claim 1 wherein said clamp support is generally co-planar with an upper surface of the supporting frame to facilitate vertical clamping of the workpiece against the supporting frame.

7. The miter saw clamp accessory as defined in claim 1 wherein the workpiece clamp at one end of said clamping arm extends generally parallel to said fence to facilitate horizontal clamping of the workpiece.

8. A miter saw clamp accessory to facilitate vertical clamping of a workpiece against a supporting frame as well as horizontal clamping of the workpiece against a fence mounted on the supporting frame, comprising:

a pair of extension rods extending laterally outwardly from one end of the frame;

a clamp support mounted on said pair of extension rods, said clamp support being co-planar with an upper surface of said frame and including top and side openings extending generally transverse to one another;

a clamp shaft mounted in the top opening of said clamp support to facilitate vertical clamping of the workpiece and being movable to the side opening of said clamp support for horizontal clamping of the workpiece;

a clamp assembly mounted on said clamp shaft, said clamp assembly including a clamping arm, a connecting arm for adjustable mounting of the clamping arm, and an associated workpiece clamp at one end of the clamping arm, the workpiece clamp being vertically adjustable for vertically clamping the workpiece against the supporting frame when the clamp shaft is mounted in the top opening of the clamp support, the workpiece clamp being horizontally adjustable for horizontally clamping the workpiece against the fence when the clamp shaft is mounted in the side opening of the clamp support, and the connecting arm being adjustably slidably mounted on the clampshaft while the workpiece clamp is threadly adjustably mounted on the clamping arm.