Work piece guiding system for a table saw

• US 6,736,042 B2
• Filed: 03/11/2002
• Issued: 05/18/2004
• Est. Priority Date: 03/01/2001
• Status: Expired due to Fees

• Current Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Porter-Cable Corporation (Stanley Black & Decker, Inc.)
• Inventors: Smith, John Charles, Garcia, Jaime, Chipner, Todd, Stafford, Brent Edward, Behne, Rockne Wade, Zhang, Zhilong
• Primary Examiner(s): Goodman, Charles
• Application Number:
  US10/096,366
• Publication Number:
  US 20020174755A1
• Time in Patent Office: 799 Days
• Field of Search: 834/402, 834/772
• US Class Current: 83/440.2
• 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: B23D 47/025 of tables
• CPC Class Codes: B27B 27/02 arranged laterally and parallel with respect to the plane of the saw blade
• CPC Class Codes: B27B 27/10 Devices for moving or adjusting the guide fences or stops
• CPC Class Codes: Y10T 83/732 With guard
• CPC Class Codes: Y10T 83/741 With movable or yieldable guide element
• CPC Class Codes: Y10T 83/7647 Adjustable
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]

Abstract

An improved table having improvements related to stock support, such as a rip fence stock support, as well as a lateral-table support system; features of laterally-slideable front and back rip fence guide rails, including an improved front rail configuration, an improved rear rail configuration, and an especially-configured front and back rail combination, including a rail configuration having cross-sectional aspects configured for use as both the front and rear rail, each instance of improved rail configuration providing the basis for an improved rip-fence locking system; improved sliding-rail lock shoes, including lock shoes that comprise an improved cross section for sliding in T-track, as well as lock and support shoes having a particular raised rib, also for improved sliding in a laterally-adjustable rail system, and a system wherein of one two rail shoes per rail, a rail-locking support shoe, is configured for biasing, and wherein the other shoe for each rail, a rail supporting shoe, remains fixed; front and back laterally-sliding fence rails coupled together in combination with an improved locking system; and a blade guard with quick-coupling and quick-release configuration for quickly and easily coupling and releasing the guard to and from the blade arbor.

Claims

1. A machine tool comprising:

a base;

an arbor for mounting a cutter, the arbor when adjusted to a cutting position having at least one of a selected cuffing height and cutting angle, the arbor being coupled to the base;

a cutter guard assembly configured for coupling to and decoupling from the arbor; and

a spring-loaded catch for coupling and decoupling the cutter guard assembly to the arbor, the spring-loaded catch being biasable by a human finger.

2. The machine tool of claim 1 wherein the arbor is configured to be adjustably tiltable in relation to the base.

3. The machine tool of claim 1 wherein the cutter guard assembly comprise a mounting plate, and wherein the spring-loaded catch comprises a spring and a catch for engaging the mounting plate, the catch being biased by the spring.

4. The machine tool of claim 3 wherein the spring comprises a generally planar metallic spring plate.

5. The machine tool of claim 4 wherein, in an unbiased position, the spring plate is generally planar.

6. The machine tool of claim 5 wherein the catch extends outwardly from the spring plate.

7. The machine tool of claim 6 wherein the catch comprises a side portion is configured to bias the spring as the mounting plate is pressed toward the catch.

8. The machine tool of claim 7 wherein the catch side portion comprises a curved portion.

9. The machine tool of claim 8 wherein the catch is formed by impressing a die into the spring plate.

10. An apparatus for coupling a mounting plate component of a cutter guard assembly to a machine tool, the apparatus comprising:

a base;

a work table having an upper surface, the work table being coupled to the base;

a cutter mounting system configured for mounting and adjustably locating a cutter substantially in a variable-angle cutting plane angularly-adjustable over a range of angular positions, including perpendicular to the work table upper surface, in both a cutting position in which the cutter protrudes above the work table upper surface and in a receded position in which the cutter is receded below the work table upper surface;

an anchor block that is coupled to the cutter mounting system, the anchor block having portions that define a slot for receiving a cutter guard mounting plate;

a spring plate that is coupled to the anchor block, the spring plate being configured so that portions of the spring plate are biased toward the mounting; and

a catch that is coupled to the spring plate, the catch being biased by the spring plate and being configured for engaging and disengaging the mounting plate.

11. The apparatus of claim 10 wherein the cutter guard mounting plate comprises portions defining a hole and wherein the catch is configured to engage the hole.

12. The apparatus of claim 10 wherein the spring plate is configured to be activated by a human finger.

16. The apparatus of claim 10, wherein the spring plate is configured to be activated by a human finger.

13. A machine tool comprising an arbor, a removable cutter guard assembly, and a leaf spring that is arranged and configured to couple and decouple the removable cutter guard assembly to the arbor, the leaf spring being biasable by a human finger to permit removal of the cutter guard assembly from the arbor.

14. A table saw, comprising:

a base;

a work table having an upper surface, the work table being coupled to the base;

a cutter mounting system configured for mounting and adjustably locating a cutter substantially in a variable-angle cutting plane angularly-adjustable over a range of angular positions, including perpendicular to the work table upper surface, in both a cutting position in which the cutter protrudes above the work table upper surface and in a receded position in which the cutter is receded below the work table upper surface;

an anchor block that is coupled to the cutter mounting system, the anchor block having portions that define a slot for receiving a cutter guard mounting plate;

a spring plate that is coupled to the anchor block, the spring plate being configured so that portions of the spring plate are biased toward the mounting plate; and

a catch that is coupled to the spring plate, the catch being biased by the spring plate and being configured for engaging and disengaging the mounting plate.

15. The table saw of claim 14, wherein the cutter guard mounting plate comprises portions defining a hole and wherein the catch is configured to engage the hole.