Appeal No. 1997-1722
Application No. 08/385,256
Appendix A
Claim 1
1. A process for manufacturing a pressed-in torsional vibration damper,
comprising the steps of:
concentrically arranging a metal hub ring and a metal flywheel ring spaced
apart from one another to define an annular gap therebetween, each metal
ring having a surface which can contact a contact surface of an elastomeric
spacer ring pressed into the annular gap;
coating the contact surfaces of the spacer ring or the contact surface of the
hub ring and flywheel ring or the contact surfaces of the spacer ring, the hub
ring and the flywheel ring with a cold-curable adhesive or a catalytically
activated adhesive or a mixture thereof, the adhesives being initially non-
adhesive;
inserting the spacer ring into the annular gap between the hub ring and
flywheel ring, while the adhesive is initially non-adhesive, to engage the
contact surface of the hub ring and the flywheel ring with a contact surface of
the spacer ring; and
subsequently curing or activating the adhesive without heating it to a
temperature greater than 90°C to bond the rings together and form the
torsional vibration damper, wherein the adhesive is selected from the group
consisting of:
chlorine rubbers with P-dinitrosobenzene, a copper or nickel catalyst,
and an isocyanate additive,
catalyzed single-component epoxy resins that spontaneously
- - - -
crosslink by means of -onium salts of BF , PF , AsF or SbF ,4 6 6 6
silicone adhesives, modified with a tin-containing catalyst, which are
cold-curable and can be activated by the action of heat at up to 70°C,
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