Machine element or mechanism – Gearing – Interchangeably locked
Reexamination Certificate
2007-03-01
2011-12-06
Pang, Roger (Department: 3655)
Machine element or mechanism
Gearing
Interchangeably locked
C192S053350
Reexamination Certificate
active
08069744
ABSTRACT:
A synchronization and engagement device for a gear transmission of a motor vehicle is provided with: a cylindrical hollow portion, which is fixed and coaxial with respect to a shaft of the gear transmission; a toothed driving ring, fixed to an idle or neutral gear of the gear transmission; a first conical friction surface, carried by one between the driving ring and the gear; a floating toothed synchronizing ring, which has a second conical friction surface mating with the first conical surface; and at least one engagement member, which is angularly fixed with respect to the cylindrical hollow portion, is able to slide axially under the action of a control device, and has a cylindrical toothing, designed to render the cylindrical hollow portion angularly fixed with respect to the driving ring. The engagement member is located in a radial position that is more internal with respect to the conical friction surfaces, whilst the cylindrical toothing of the engagement member is an external toothing.
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International Search Report dated Apr. 2, 2007 from PCT/EP2007/051968.
Elasis-Societa Consortile per Azioni
Ohlandt Greeley Ruggiero & Perle L.L.P.
Pang Roger
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