Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1976-06-30
1977-06-21
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
81180R, 144 32R, B25B 1300
Patent
active
040303837
ABSTRACT:
An attachment for a screwgun for driving screws to a predetermined depth. The device consists of a base member formed with threads for threadable attachment to the head of a screwgun a sleeve formed with threads for threadable attachment to the base member and a spring attached to the base and bearing against the sleeve for holding the sleeve in a preselected position.
REFERENCES:
patent: 2790471 (1957-04-01), Graybill
patent: 2796161 (1957-06-01), Graybill
patent: 3869942 (1975-03-01), DeCaro
patent: 3934629 (1976-01-01), Boman
Cypher James R.
Jones Jr. James L.
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