Hole saws

Details Hole saws Hole saws

1985-04-22

1987-03-24

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

With product handling or receiving means

Ejector

125 20, 408205, 408209, 408703, B23B 5105

Patent

active

046521852

ABSTRACT:
A device for removing waste plugs from hole saws comprising a plug member positioned internally of a hole saw and retained therein by means of screws or other projections which extend outwardly through cleanout slots of the hole saw. The projections may be joined through an external annular ring which encircles the hole saw. The ring may be grasped and forced downwardly causing the plug member to eject a waste plug from the hole saw. A spring may be positioned between a mandrel of the hole saw and the plug member in order to normally bias a plug member downwardly to assist its positioning and ejectment of a waste plug.

REFERENCES:
patent: 1058149 (1913-03-01), Campbell
patent: 2591516 (1952-03-01), Darnell
patent: 3265104 (1966-08-01), Gallo, Sr.
patent: 3390596 (1968-07-01), Trevathan
patent: 4303357 (1981-12-01), Makar
patent: 4322187 (1982-03-01), Hougen

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