Drain pipe method

Details Drain pipe method Drain pipe method

1977-03-02

1978-09-12

Aegerter, Richard E.

Plastic and nonmetallic article shaping or treating: processes

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

Making hole or aperture in article

405 49, 138121, 138122, 264145, 264150, 264173, B29C 1710

Patent

active

041138180

ABSTRACT:
A drain pipe of corrugated form comprising corrugations of uniform inner diameter having axially in line alternating drain holes and outward protrusions in the corrugation troughs. The drain holes are cut by a stationary knife which engages the troughs of normally formed corrugations but which are set below the level of the protrusions, thus cutting a drain hole only in alternate corrugations. Preferably drain holes and protrusions are also staggered about the circumference of each corrugation trough.

REFERENCES:
patent: 3538209 (1970-11-01), Hegler
patent: 3559692 (1971-02-01), Mantelet
patent: 4024894 (1977-05-01), Drossbach

Affiliated with

Also associated with

Rating

Drain pipe method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drain pipe method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drain pipe method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2384394