192 clutches and power-stop control – Clutches – Progressive engagement
Reexamination Certificate
2006-02-21
2008-10-07
Bonck, Rodney H (Department: 3681)
192 clutches and power-stop control
Clutches
Progressive engagement
C192S053331, C074S339000
Reexamination Certificate
active
07431137
ABSTRACT:
A synchronizer for a manual transmission with a first and second idler gears rotatably mounted on a transmission shaft with a synchronizer sleeve non-rotatably mounted on the transmission shaft such that it can shift axially. The sleeve can be coupled to the first or second idler gear and comprises a shifting flange with through openings arranged around its periphery. A first and second synchronizer ring are separated by way of locking pins around the periphery, which can be inserted through the openings. At least one of the two synchronizer rings has an outer cone and an inner cone (double cone), that the double cone can be placed in non-positive contact simultaneously with an outer coupling ring that has an inner cone and an inner coupling ring that has an outer cone, and that the two coupling rings can be positively connected to the adjacent idler gear and axially supported against it.
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ZF Friedrichshafen AG so called single-cone synchronizer identified as ZF-B.
ZF Friedrichshafen AG so called double-cone ring synchronizer identified as ZF-D.
Lechner, B. G. and H. Naunheimer, Schalterinrichtungen, Austlegung und Gestaltung von Synchronisierungen., 1994, Springer-Verlag, pp. 226-262.
Bonck Rodney H
Davis & Bujold & Daniels, P.L.L.C.
ZF Friedrichshafen AG
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