Shock absorbing unit molded from polyurethane (urea) rubber comp

Details Shock absorbing unit molded from polyurethane (urea) rubber comp Shock absorbing unit molded from polyurethane (urea) rubber comp

1976-08-02

1978-02-14

Cockeram, H. S.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

213 7, 260 75NH, 260 775AM, 260 775AN, 267152, 428425, B32B 3106, C08G 1832, C08G 1842, F16F 308

Patent

active

040738582

ABSTRACT:
A shock absorbing element, suitable for use in a railroad draft gear, as well as a resilient polyureaurethane composition therefor, said element characterized by a compressive cycling test as well as preferably a cold temperature compression test, where said polyureaurethane is prepared by reacting a complex of 4,4'-methylene dianiline and a salt with the reaction product of selected diisocyanates and manipulatively selected polymeric polyols. An assembly of such shock absorbing elements is also disclosed under compression in a cylinder suitable as a railroad shock absorbing draft gear.

REFERENCES:
patent: 2755056 (1956-07-01), Hutton
patent: 2942872 (1960-06-01), Muller
patent: 3504901 (1970-04-01), Ditty
patent: 3677869 (1972-07-01), Chung et al.
patent: 3755261 (1973-08-01), Van Gulick
patent: 3845021 (1974-10-01), Dukes et al.
patent: 3888831 (1975-06-01), Kogon
patent: 3891606 (1975-06-01), Kogon

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