Drill bit with fastener-driving collar assembly

Details Drill bit with fastener-driving collar assembly Drill bit with fastener-driving collar assembly

1979-03-07

1980-08-26

Smith, James G.

Compound tools

Cutter combined with other tool or tools

B26B 1100

Patent

active

042187958

ABSTRACT:
A two piece hole-drilling and fastener-driving assembly consists of a three-sectioned drill bit and a three-sectioned drive collar. The drill bit has a fluted drilling section, a hexagonal driving section and a tapered section adapted to be received in a complementarily shape chuck of a rotary hammer. The drive collar has a first hexagonal portion which mates with the hexagonal drill bit section and is driven thereby. A second tubular portion receives the drilling section when the hexagonal portions are engaged. A third portion includes a fastener-engaging recess. This portion may take the form of a removable socket and the collar provided with a spring-biased ball retainer to hold the socket thereon and a second such retainer to hold the collar on the drill bit. The drill bit is inserted in the rotary hammer chuck and a hole is drilled in the workpiece. The drive collar is then slipped over the drill bit and a self-tapping fastener driven into the just-drilled hole.

REFERENCES:
patent: 118178 (1871-08-01), Arnold
patent: 260314 (1882-06-01), Chuck
patent: 354155 (1886-12-01), Libbey
patent: 1209362 (1916-12-01), Turner
patent: 2482995 (1949-09-01), Willis
patent: 3136347 (1964-06-01), Linquist
patent: 3336611 (1967-08-01), Schepp
patent: 3484114 (1969-12-01), Rodin
patent: 3534640 (1970-10-01), Macy
patent: 3932904 (1976-01-01), Nilsson et al.
patent: 3965510 (1976-06-01), Ernst
patent: 4007795 (1977-02-01), Gawron et al.
patent: 4092753 (1978-06-01), Fuhrmann
patent: 4107800 (1978-08-01), Jorgensen

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