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US 5,392,665 AGranted
Manual transmission of a motor vehicle
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorRobert Muller
Life of this patent
Estimating the term…
Abstract
A manual transmission shifted by synchronizer clutches, in which the transmission gears situated between an input shaft and an output shaft are arranged such that, for the shifting of all forward gears, two clutches respectively are closed. A synchronizer clutch participates in the shifting of all forward gears. By bringing the sliding sleeve of the synchronizer clutch into its neutral zero position, a shifting directly into idling can take place from any shifted gear.
Claims11
A manual transmission of a motor vehicle, comprising:
- transmission gears that include a plurality of forward gears with a progressive gear grading and one reverse gear, the gears being formed by gear wheel pairs;
- synchronizer clutches controllably coupled to the gears to thereby shift the gears, with all said transmission gears being shiftable only upon simultaneous closing of two of said synchronizer clutches that are assigned to each gear;
- wherein a first pair of gear wheels form at least a part of two adjacent forward gears in a first range shifting, and a second pair of gear wheels form at least a part of two non-adjacent forward gears in a second range shifting.
Dependencies are inferred from the claim text.