Holder for self-drilling dowels

Details Holder for self-drilling dowels Holder for self-drilling dowels

1977-06-21

1979-01-16

Culver, Horace M.

Chucks or sockets

Socket type

Friction grip

B23B 3106, B23B 3144

Patent

active

041345975

ABSTRACT:
A holder for a self-drilling dowel has a frusto-conically shaped bore for holding the locking-in cone on the dowel. The surface of the bore has three uniformly angularly spaced rounded recesses so that three relatively narrow strips of the surface provide contact with the locking-in cone.

REFERENCES:
patent: 1597404 (1926-08-01), Crossley
patent: 2066276 (1936-12-01), Harrall et al.
patent: 2359286 (1944-10-01), Billger
patent: 2397382 (1946-03-01), Smith
patent: 2399939 (1946-05-01), Phillips
patent: 3049358 (1962-08-01), Polos
patent: 3082014 (1963-03-01), Wohlhaupter et al.
patent: 3100545 (1963-08-01), Zimmerman
patent: 3534970 (1970-10-01), Glimpel
patent: 3863940 (1975-02-01), Cummings

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