Method for cutting concrete coated pipe

Details Method for cutting concrete coated pipe Method for cutting concrete coated pipe

1974-12-05

1976-10-12

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

83 57, 83177, 264 79, 264135, 264139, B28B 148, B28B 1114

Patent

active

039858480

ABSTRACT:
A method for cutting an arcuate groove in an uncured concrete coating on an arcuate surface. A jet stream of water is directed at the coating along a line extending tangentially of the surface in a downward direction. The object is rotated at a relatively low speed in relation to the stationary water jet. The invention also encompasses a method of applying a concrete coating to pipe wherein after the cement is forced onto the pipe a wrapping material is wound around the pipe in a spiral pattern to hold on the concrete. The wrapping material may be a water impervious plastic which will affect curing of the cement without the aid of chemical curing agents.

REFERENCES:
patent: 2302020 (1942-11-01), Frederick
patent: 2881503 (1959-04-01), Johnson
patent: 3165564 (1965-01-01), Howle
patent: 3212378 (1965-10-01), Rice
patent: 3761557 (1973-09-01), Werner

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