Method for forming holes in a member

Details Method for forming holes in a member Method for forming holes in a member

1978-03-23

1981-03-03

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264156, 408 1R, 408 50, B28B 148

Patent

active

042540755

ABSTRACT:
A method of forming holes in plastic tubes which includes advancing a rotating shaft into and through the wall of the tube while maintaining a rate of rotation sufficient to cause the material of the tube to be distressed sufficiently to fluidize and/or disintegrate from the area of operation of the shaft, moving the shaft from the hole, and allowing the periphery of the hole to solidify.

REFERENCES:
patent: 669331 (1901-03-01), Thurber
patent: 2862231 (1958-12-01), Voigt
patent: 3562377 (1971-02-01), Zetzsche
patent: 3580793 (1971-05-01), Hewitt
patent: 3662941 (1972-05-01), Gage
patent: 3683736 (1972-08-01), Loose
patent: 3874808 (1975-04-01), Zachardelli et al.
patent: 3899265 (1975-08-01), Lang
patent: 3957386 (1976-05-01), Lupke
patent: 4012161 (1977-03-01), Shultz
patent: 4088417 (1978-05-01), Kosmowski
Randolph et al., "Plastics Engineering Handbook", Reinhold, N.Y. (1960) pp. 50 & 51. _

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