Drive in tapping attachments

Details Drive in tapping attachments Drive in tapping attachments

1991-06-27

1993-05-11

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool-support with torque-applying clutch

192 21, 192 51, 408132, 470181, B23B 4714

Patent

active

052096165

ABSTRACT:
In self-reversing tapping attachments improved ball drive means are connectable to source of rotational drive and drive transmitting means are engagable, with the drive means including at least one driving ball member and with the drive transmitting means defining at least one slot for the ball member, which slot includes a ramp section inclined so that upon engagement between the drive means and the ball member the latter travels upwardly thereby cushioning impact between the drive means and the drive transmitting means. A radially extending member on a tap holder member has a radius of curvature less than the radius of curvature of contact members of the drive transmitting means to cushion impact.

REFERENCES:
patent: 3656858 (1972-04-01), Ericksson
patent: 3946844 (1976-03-01), Johnson
patent: 3999642 (1976-12-01), Johnson
patent: 4832542 (1989-05-01), Johnson et al.

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