Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Corrugating
Patent
1977-03-04
1982-10-12
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Corrugating
264512, 264515, 264145, 264157, 2642093, 2642101, B29D 2303, B29D 2304, B29C 1714
Patent
active
043538592
ABSTRACT:
Conduits, fittings, end closures, and couplers, particularly adapted for use as drain tile, are prepared by molding the items in a suitable mold with their respective ends closed. The ends can then be severed along cut lines directly molded, where desired. The items produced in accordance herewith are formed with helical threads to permit threaded interengagement therebetween.
REFERENCES:
patent: 1324850 (1919-12-01), Roberts
patent: 1543506 (1925-06-01), Miller
patent: 1827086 (1931-10-01), Hunter
patent: 1904675 (1933-04-01), Boyer
patent: 2238037 (1941-04-01), Cornel
patent: 2790994 (1957-05-01), Cardot et al.
patent: 2983961 (1961-05-01), Titterton et al.
patent: 2986847 (1961-06-01), Sato
patent: 3291670 (1966-12-01), Usab
patent: 3300556 (1967-01-01), Battenfeld et al.
patent: 3432586 (1969-03-01), Stenger
patent: 3538209 (1970-11-01), Hegler
patent: 3538595 (1970-11-01), Barnes
patent: 3551007 (1970-12-01), Martin et al.
patent: 3584092 (1971-06-01), Alexandris
patent: 3793421 (1974-02-01), Paubandt
patent: 3813115 (1974-05-01), French
patent: 3825288 (1974-07-01), Maroshak
patent: 3862698 (1975-01-01), Hafele
patent: 3873391 (1975-03-01), Plauka et al.
patent: 3891733 (1975-06-01), Maroschak
Burt Pamela S.
Hoag Willard E.
Shortley John L.
Weiner Irving M.
LandOfFree
Method for making fittings and couplings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making fittings and couplings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making fittings and couplings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-223107