Fiberglass pipe with rough wrench surfaces

Details Fiberglass pipe with rough wrench surfaces Fiberglass pipe with rough wrench surfaces

1994-07-25

1996-10-22

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285328, 285423, 285919, 138146, 264131, F16L 3500

Patent

active

055669859

ABSTRACT:
A fiberglass pipe joint with threaded ends has rough surface areas adjacent to such ends which allow strap wrenches to be used to tighten the threads with a high torque that prevents leakage. The rough areas are formed by partially embedded sand grains which are sprinkled on the resin component prior to curing, or on a wet bonding material after curing.

REFERENCES:
patent: 657605 (1900-09-01), Lacy
patent: 2876154 (1959-03-01), Usab
patent: 3258032 (1966-06-01), Whittier et al.
patent: 3325195 (1967-06-01), Margis
patent: 3498827 (1970-03-01), Vanderbilt et al.
patent: 3638968 (1972-02-01), Barks
patent: 3682676 (1972-08-01), Karrh et al.
patent: 5063969 (1991-11-01), Snyder
patent: 5213379 (1993-05-01), Taniguchi
patent: 5233737 (1993-08-01), Policelli
patent: 5352309 (1994-10-01), Oswald

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