Double ended tap

Details Double ended tap Double ended tap

1980-11-10

1983-11-01

Garrett, Robert E.

Cutting by use of rotating axially moving tool

Tool or tool with support

Including detailed shank

279 22, B23B 3108, B23B 3112, B23G 1100, B25G 320

Patent

active

044127642

ABSTRACT:
A double ended tap having threaded portions at both ends thereof which may include a centering recess in each end and fluted portions which aid in securing the tap to a tool holder, and a tool holder in combination with the double ended tap and means for securing either end of the double ended tap to the tool holder.

REFERENCES:
patent: 371015 (1887-10-01), Wike
patent: 412952 (1889-10-01), Elterich
patent: 1953830 (1934-04-01), Park
patent: 2089930 (1937-08-01), Carlson
patent: 2641478 (1953-06-01), Sigg
patent: 3171145 (1965-03-01), Benjamin et al.
patent: 3334366 (1967-08-01), Schrolucke
patent: 3436086 (1969-04-01), Glenzer
patent: 3531810 (1970-10-01), Fure
patent: 3652099 (1972-03-01), Bilz
patent: 3879046 (1975-04-01), Alford
patent: 4111442 (1978-09-01), Wawrzyniak
patent: 4131165 (1978-12-01), Wanner et al.

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