Router bit with replaceable knife

Details Router bit with replaceable knife Router bit with replaceable knife

1991-09-12

1992-10-13

Bray, W. Donald

Woodworking

Rotary cutter

End thrust

144218, 144241, 407 34, 407 53, B27G 1300, B23B 5100

Patent

active

051542153

ABSTRACT:
A router bit body has an open center space that permits plunge cutting and that facilitates the ejection of chips from the router bit body. The knife is screwed to a sloping knife-supporting plane surface that underlies and reinforces the knife and that reduces the stresses in the mounting screw. The knife-supporting plane surface lies in a plane through which the angle of rotation passes obliquely.

REFERENCES:
patent: 2517374 (1950-08-01), Amon
patent: 3344497 (1967-10-01), Osborne
patent: 4132493 (1979-01-01), Hosoi
patent: 4655648 (1987-04-01), Hellbergh
patent: 4733995 (1988-03-01), Aebi
patent: 5039259 (1991-08-01), Duncan

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