Operating device for a hollow drill

Details Operating device for a hollow drill Operating device for a hollow drill

1998-09-14

1999-09-14

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

Including tool with duct

408124, 408204, B23B 4500

Patent

active

059512172

ABSTRACT:
An operating device for a hollow drill (1) including a housing (2), a drill receiving chuck (3) supported in the housing (2) for rotation relative thereto, a drive unit (4) for rotating the chuck (3), a bottom element adjoining the chuck (3) at a side of the chuck facing in a direction opposite to a drilling direction, and an arrangement for lifting the bottom element off the chuck (3).

REFERENCES:
patent: 2349156 (1944-05-01), Fischer
patent: 3452226 (1969-06-01), Hettich
patent: 3546976 (1970-12-01), Clapp et al.

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