Transportable bench circular saw

• US 6,370,997 B1
• Filed: 12/09/1999
• Issued: 04/16/2002
• Est. Priority Date: 06/09/1997
• Status: Expired due to Fees

• Current Assignee: Metabowerke GMBH (Koki Holdings Co., Ltd.)
• Original Assignee: Elektra Beckum AG (Koki Holdings Co., Ltd.)
• Inventors: Afting, Andreas, Rugen, Hermann, Landsberg, Peter, Raasch, Klaus
• Primary Examiner(s): ASHLEY, BOYER DOLINGER
• Application Number:
  US09/424,876
• Time in Patent Office: 859 Days
• Field of Search: 834/713, 831/00, 831/021, 834/772, 834/78, 834/861, 834/88, 834/91, 834/90, 835/221.9, 837/88, 837/94, 144/286.1, 144/286.5
• US Class Current: 83/100
• CPC Class Codes: B23D 45/062 the saw blade being adjustable according to depth or angle of cut
• CPC Class Codes: B23D 59/006 for removing or collecting chips
• CPC Class Codes: Y10T 83/207 By suction means
• 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 83/7772 Angular relative to previous path
• CPC Class Codes: Y10T 83/7788 Tool carrier oscillated or rotated
• CPC Class Codes: Y10T 83/7793 Means to rotate or oscillate tool
• CPC Class Codes: Y10T 83/858 Indicates dimension of work being cut

Abstract

A transportable circular table saw having an exterior housing (1) with a tabletop (4) forming a workpiece support surface (3) that is irreversibly arranged in the exterior housing (1), and a saw unit (7) arranged underneath the tabletop (4) with a drive motor and a circular saw blade (10) protruding into the tabletop (4) from below through a saw slot (9), with the exterior housing (1) in plan view being approximately square in shape. The sawing unit (7) is slidable relative to the tabletop (4) in a pulling direction, as a result of which the circular saw blade (10) moves in the saw slot (9) in the pulling direction, and in relation to an axis of a mitre cut in the pulling direction, preferably being able to be inclined to at least one side. The tabletop (4) forms the workpiece support surface (3) and the saw slot (9), is rotatably held in the exterior housing (1) on an axis perpendicular to the workpiece support surface (3), in particular in a surrounding top (14) of the exterior housing (1). Furthermore, the sawing unit (7) with the tabletop (4) is rotatable on the vertical axis, and the exterior housing has a recess (15) emanating from the front and extending across the entire width of the exterior housing (1) under the tabletop (4), and if applicable the surrounding top (14) in which a control element (12, 13) for swivelling the tabletop (4) is arranged so as to be freely swivellable to the right and/or left.

Claims

1. A transportable table saw comprising:

an exterior housing which is approximately square in plan view, said exterior housing having a non-reversible tabletop forming a workpiece support surface with a saw slot therein as well as left and right side panels defining a front side, a rear side, a left side and a right side of the exterior housing, the tabletop being in the exterior housing for rotation about a vertical axis which is perpendicular to said workpiece support surface, the exterior housing having a recess which emanates from the front side and extends between the left and right sides of the exterior housing under the tabletop so that the exterior housing has a horizontal U-shape;

a sawing unit slidably arranged underneath the tabletop for movement relative to the workpiece support surface in a pulling direction, said sawing unit being mounted for rotation with the tabletop about said vertical axis and being inclinable to at least one side of a mitre cut axis in said pulling direction, said sawing unit having a driven saw blade, the saw blade protruding through the saw slot from below and being movable in the saw slot in said pulling direction with sliding movement of the sawing unit; and

a control element for swiveling the tabletop being arranged in said recess so as to be freely swivelable in left and right directions from a center swiveling position of the tabletop.

2. A table saw according to claim 1, wherein an on/off switch is arranged on the control element.

3. A table saw according to claim 1, further comprising locking means for locking the sawing unit in at least one of a middle sliding position and a rearmost sliding position.

4. A table saw according to claim 1, wherein a linear measurement scale is provided on the tabletop which forms the workpiece support surface at an angle to a plane in which the circular saw blade rotates.

5. A table saw according to claim 1, wherein an angular scale is provided on at least one of the tabletop forming the workpiece support surface and a surrounding top surface of the exterior housing, said angular scale being an arc about a vertical center axis of the table top.

6. A saw according to claim 1, wherein the saw blade is a circular saw blade and a riving knife which is height-adjustable together with the circular saw blade has a height scale.

7. A table saw according to claim 1, wherein positioning elements for atable extension are provided on the exterior housing at least at one of front, rear and sides thereof.

8. A table saw according to claim 1, the exterior housing has a surrounding top which surrounds the tabletop and in which an extension slot is provided which extends the saw slot in a center swivelling position of the tabletop.

9. A table saw according to claim 8, wherein the surrounding top has additional extension slots which extend the saw slot in several angular swivelling positions of the tabletop.

10. A table saw according to claim 1, wherein that the sawing blade is a chainsaw blade which is aligned so as to be approximately perpendicular to the workpiece support surface.

11. A table saw according to claim 10, a cutting length of the chainsaw blade is between 100 and 200 mm parallel to the workpiece support surface and between 150 to 400 mm perpendicular to the workpiece support surface.

12. A table saw according to claim 1, further comprising means for locking the tabletop at least in a center position of swivelling.

13. A table saw according to claim 12, further comprising a control element for releasing said means for locking of the tabletop.

14. A table saw according to claim 12, further comprising a locking lever arranged on a control element for releasing of said means for locking of the tabletop.

15. A table saw according to claim 1, wherein the saw blade is a circular saw blade and a sawdust collection box with a closable extraction pipe is provided below the circular saw blade under the tabletop;

wherein a sawdust extraction hood with an extraction pipe is provided above the tabletop; and

wherein both extraction pipes are connectable to an extraction fan.

16. A saw table according to claim 15, wherein an air ducting strip is provided for closing the extraction pipe of the sawdust collection box.

17. A saw table according to claim 16, wherein the air ducting strip is formed of spring steel.