Spring devices – Vehicle – Comprising compressible fluid
Reexamination Certificate
1997-02-18
2002-08-27
Gallagher, John J. (Department: 1733)
Spring devices
Vehicle
Comprising compressible fluid
C156S314000, C156S315000
Reexamination Certificate
active
06439550
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method as well as an adhesive laminate for permanently bonding a rubber air spring to a support sleeve.
BACKGROUND OF THE INVENTION
Heretofore, air springs have been utilized to cushion the movement between a vehicle axle or wheel and the frame of a vehicle. Typically, the spring has been physically attached to a housing such as a metal sleeve on an axle either by force fit, or by a metal crimping ring, or both. A disadvantage of the force fit was that during handling prior to installation on a vehicle, the air spring would often separate from the metal sleeve and thus had to be reassembled. A disadvantage of the metal crimping ring was that it required additional labor to install and was costly.
SUMMARY OF THE INVENTION
A rubber air spring having a bead portion is adhered to a seat portion of a fixturing sleeve. The rubber air spring bead portion has a rubber primer such as trichlorotriazinetrione applied thereto and the sleeve seat has a fixturing primer such as a mixture of chlorosulfonated polyethylene, chlorinated paraffin, and poly(p-dinitrosobenzene) applied thereto. The rubber primer and fixturing primer are chemically bonded or adhered together through the utilization of an adhesive such as an epoxy. A strong bond is formed which is at least twice the force required to hold the air spring in place.
REFERENCES:
patent: 2226605 (1940-12-01), Geyer et al.
patent: 2711383 (1955-06-01), Ruggeri et al.
patent: 4029305 (1977-06-01), Schubert et al.
patent: 4327150 (1982-04-01), White et al.
patent: 4755548 (1988-07-01), Iwasa et al.
patent: 2303843 (1976-10-01), None
BFS Diversified Products LLC
Gallagher John J.
Hudak Daniel
Palmer Meredith
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