Router guide bushing

Details Router guide bushing Router guide bushing

2007-04-24

2007-04-24

Self, Shelley (Department: 3725)

Woodworking

Shaping machine

Grooving machine

C144S154500, C409S182000

Reexamination Certificate

active

10896295

ABSTRACT:
An apparatus for use with a router that is adapted to secure a guide bushing to a base of the router includes a modified retaining nut that includes a plurality of extensions that extend radially away from the nut. Each extension includes a threaded hole that is adapted to receive a set screw. The retaining nut includes interior screw threads that cooperate with outside screw threads of the guide bushing. The guide bushing is disposed on one side of a hole provided in the base of the router and the retaining nut is lightly tightened secure the guide bushing in a recess provided in the router base. The set screws are then tightened and bear against the router base sufficient to urge the retaining nut away from the guide bushing thereby placing the screw thread of both under tension, while simultaneously engaging with the router base sufficient to retain the retaining nut in position relative to the router base.

REFERENCES:
patent: 3332462 (1967-07-01), Williams
patent: 5584328 (1996-12-01), Grisley
patent: 6736173 (2004-05-01), Grisley et al.

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