Portable combination table, cross-cut, rip-cut, and miter saw

• US 5,797,307 A
• Filed: 12/10/1996
• Issued: 08/25/1998
• Est. Priority Date: 12/10/1996
• Status: Expired due to Term

• Current Assignee: Edward H. Horton
• Original Assignee: Edward H. Horton
• Inventors: Horton, Edward H.
• Primary Examiner(s): Rachuba, Maurina T.
• Application Number:
  US08/762,995
• Time in Patent Office: 623 Days
• Field of Search: 83/477.2, 83/581, 83/471.1, 83/468.3, 83/471.3, 83/485, 83/489
• US Class Current: 83/471.3
• CPC Class Codes: B23D 45/068 the saw blade being adjustable according to depth or angle of cut B23D45/061, B23D45/065 take precedence
• CPC Class Codes: B27B 27/08 arranged adjustably, not limited to only one of the groups B27B27/02 - B27B27/06
• 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 83/773 Work-support includes passageway for tool [e.g., slotted table]
• CPC Class Codes: Y10T 83/7763 Tool carrier reciprocable rectilinearly
• CPC Class Codes: Y10T 83/8773 Bevel or miter cut

Abstract

A portable combination saw which includes a generally horizontally disposed work platform having a circular opening formed therethrough. A circular support is rotatably mounted within the circular opening and has an elongated slot formed therethrough. A motor is movably mounted beneath the circular support such that the blade thereof extends upwardly through the slot and is movable along the slot. A fence mounts across an upper surface of the platform and the circular support. The fence has an arc-like cutout to provide clearance for the blade when it is moved along the slot. Locking devices enable the circular support to be fixed in position relative to the platform and the saw to be fixed in position relative to the slot in the circular support. A blade height and angle adjustment assembly allows the saw blade to be releasably locked at a predetermined angle and height relative to the circular support. Also, disclosed is a portable universal bench for use with a motor and saw blade so as to provide a table saw, cross-cut and rip-cut saw, and miter saw configurations.

Claims

1. A portable combination table, cross-cut, rip-cut, and miter saw, comprising:

(a) a generally horizontally disposed work platform having a circular opening formed through said platform;

(b) a circular support rotatably mounted within said circular opening of said platform and having an elongated slot formed through said circular support, said elongated slot having a longitudinal axis;

(c) a motor;

(d) means for movably mounting said motor beneath said circular support wherein when a blade is attached to said motor, the blade extends upwardly through said slot and the blade is movable linearly along said longitudinal axis of said slot;

(e) a fence mountable across an upper surface of said platform and said circular support, said fence having an cutout to provide clearance for the blade when said blade is moved along said slot;

(f) first means for releasably locking said circular support in a fixed position relative to said platform; and

(g) second means for releasably locking said motor in a fixed position relative to said slot.

2. A combination saw according to claim 1, wherein said means for movably mounting said motor comprises L-shaped flanges mounted beneath said circular support and said flanges being disposed generally parallel to said slot to define opposing channels.

3. A combination saw according to claim 2, wherein said means for movably mounting said motor further comprises a support shoe which is movable between said opposing channels.

4. A combination saw according to claim 3, wherein said support shoe comprises lateral ends and rollers mounted on said lateral ends and said rollers rotatably engaging said L-shaped flanges.

5. A combination saw according to claim 1, wherein said platform has an outer peripheral edge and a threaded throughbore extending through said outer peripheral edge, said throughbore opening onto said circular opening of said platform, and said first means for releasably locking said circular support in a fixed position comprises a threaded bolt threadably receivable through said throughbore for releasably locking said platform and said circular support in a fixed position.

6. A combination saw according to claim 1, wherein said second means for releasably locking said motor comprises a pin operably attached to said means for movably mounting said motor and said pin having an end which engages at least one of said circular support and said platform.

7. A combination saw according to claim 1, further comprising third means for releasably locking the blade attached to said motor at a predetermined height and angle relative to said circular support, and said third means for releasably locking the blade attached to said motor being attached to said means for movably mounting said motor.

8. A combination saw according to claim 7, wherein said third locking means for releasably locking the blade attached to said motor at a predetermined height and angle comprises an angle bracket having an arcuate traveler slot and a depth slide having an elongated slot.

9. A portable universal bench for use with a motor and a saw blade so as to provide a table saw, cross-cut and rip-cut saw, and miter saw configurations, said portable universal bench comprising:

(a) a generally horizontally disposed work platform having a circular opening formed through said platform;

(b) a circular support rotatably mounted within said circular opening of said platform and having an elongated slot formed through said circular support, said elongated slot having a longitudinal axis;

(c) means for movably mounting a motor beneath said circular support wherein when a blade is attached to the motor, the blade extends upwardly through said slot and the blade is movable linearly along said longitudinal axis of said slot;

(d) a fence mountable across an upper surface of said platform and said circular support, said fence having an cutout to provide clearance for the blade when the blade is moved along said slot;

(e) first means for releasably locking said circular support in a fixed position relative to said platform; and

(f) second means for releasably locking the motor in a fixed position relative to said slot.

10. A portable universal bench according to claim 9, wherein said means for movably mounting said motor comprises L-shaped flanges mounted beneath said circular support, said flanges being disposed generally parallel to said slot to define opposing channels.

11. A portable universal bench according to claim 10, wherein said means for movably mounting said motor further comprises a support shoe which is movable between said opposing channels.

12. A portable universal bench according to claim 11, wherein said support shoe comprises lateral ends and rollers mounted on said lateral ends, and said rollers rotatably engaging said L-shaped flanges.

13. A portable universal bench according to claim 9, wherein said platform has an outer peripheral edge and a threaded throughbore extending through said outer peripheral edge, said throughbore opening onto said circular opening of said platform, and said first means for releasably locking said circular support in a fixed position comprises a threaded bolt threadably receivable through said throughbore for releasably locking said platform and said circular support in a fixed position.

14. A portable universal bench according to claim 9, wherein said second means for releasably locking the motor comprises a pin operably attached to said means for movably mounting the motor and said pin having an end which engages at least one of said circular support and said platform.

15. A portable universal bench according to claim 9, further comprising third means for releasably locking the blade attached to the motor at a predetermined height and angle relative to said circular support, and said third means for releasably locking the blade attached to the motor being attached to said means for movably mounting the motor.

16. A portable universal bench according to claim 15, wherein said third locking means for releasably locking the blade attached to said motor at a predetermined height and angle comprises an angle bracket having an arcuate traveler slot and a depth slide having an elongated slot.