Pneumatic power drill

Details Pneumatic power drill Pneumatic power drill

1995-05-31

1997-03-25

Bishop, Steven C.

Cutting by use of rotating axially moving tool

With means to regulate operation by use of templet, tape,...

408 11, 408129, 408702, B23B 3908, B23B 3910

Patent

active

056138105

ABSTRACT:
A portable pneumatic power drill whose tool-carrying spindle is rotated by a pneumatic motor. According to the invention spindle speed is under the control of an electric motor as a function of the speed of rotation of the tool-carrier spindle and of instructions stored in a memory card, control being provided by two microprocessors. This provides operating modularity that is better than that of conventional power drills.

REFERENCES:
patent: 4076442 (1978-02-01), Cox, Jr. et al.
patent: 4688970 (1987-08-01), Eckman
patent: 4985841 (1991-01-01), Iwagaya
patent: 5116168 (1992-05-01), Aihara
patent: 5349337 (1994-09-01), McCormick
patent: 5372464 (1994-12-01), Bureller

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