Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1980-03-31
1982-03-16
Hoag, Willard E.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156446, 156598, 425469, 425471, B29C 100, B29D 2312
Patent
active
043199500
ABSTRACT:
Mandrel for making a coupling which coupling comprises a body of fiber glass reinforced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around the outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeve integral therewith. Thereafter the hardened coupling is stripped from the steel and plastic mandrel and subjected to a further curing and finishing operation.
REFERENCES:
patent: 2744043 (1956-05-01), Ramberg
patent: 2814330 (1957-11-01), Vanzo et al.
patent: 2837456 (1958-06-01), Parilla
patent: 2848133 (1958-08-01), Ramberg
patent: 2896976 (1959-07-01), Wiltze
patent: 3407101 (1968-01-01), Lockshaw
patent: 3462175 (1969-08-01), Johnson
patent: 4003541 (1977-01-01), Schuldink
Ferraro Joseph P.
Heisler Robert W.
Kazienko Henry J.
Lostak Charles
Sznopek John L.
Hoag Willard E.
Kelly Joseph J.
Krone Robert M.
Manville Service Corporation
O'Connor Gregory W.
LandOfFree
Mandrel for making a coupling for rigid pressure pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mandrel for making a coupling for rigid pressure pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mandrel for making a coupling for rigid pressure pipe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1640518