Draft gear assembly

Details Draft gear assembly Draft gear assembly

2003-12-11

2009-06-02

Morano, S. Joseph (Department: 3617)

Railway draft appliances

Cushioned

Combined spring and friction

Reexamination Certificate

active

07540387

ABSTRACT:
A friction clutch mechanism for a draft gear assembly includes a pair of outer stationary plate members, a pair of movable plate members, a pair of inner stationary plate members having an inner surface which is tapered at an angle of approximately 4.5°, a pair of wedge shoe members having an upper surface which is tapered from a point disposed inwardly from the tapered outer surface inwardly toward and at an acute angle relative to a longitudinal axis of the friction clutch mechanism, and a center wedge member which includes a pair of correspondingly tapered surfaces frictionally engageable with the upper tapered surface of a respective one of the pair of wedge shoe members. The tapered upper surface of the pair of wedge shoe members is tapered at an angle of approximately 49.0°-50.0°. The pair of tapered surfaces of the center wedge is tapered at an angle of about 49.5°.

REFERENCES:
patent: 5590797 (1997-01-01), Duffy et al.

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