Stone working – Sawing – Rotary
Patent
1979-06-25
1981-01-06
Whitehead, Harold D.
Stone working
Sawing
Rotary
51273, 51283R, 51290, B28D 104
Patent
active
042430119
ABSTRACT:
A dust shroud is disclosed for a pipe-cutting portable circular saw. The shroud comprises upper and lower blade housings which are nested and guided so that the lower housing can be moved into and out of the upper housing. The lower periphery of the lower housing generally conforms to the shape of the pipe to be cut. A device which cooperates with the saw and which fits into the pipe to collect dust from within the pipe is also described.
REFERENCES:
patent: 2855733 (1958-10-01), Allison
patent: 3119602 (1964-01-01), Johnson
patent: 3187738 (1965-06-01), Christopher
patent: 3585980 (1971-06-01), Mellor
patent: 4055160 (1977-10-01), Wilson
Bauman Glenn R.
Bodycomb, Jr. Frederick M.
Johns-Manville Corporation
Kelly Joseph J.
Krone Robert M.
McClain James W.
Whitehead Harold D.
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