Gear shifting apparatus of a transmission for a four-wheel drive vehicle
US4545457A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 1982 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Nov 8, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20085
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A gear shifting apparatus of a transmission for a four-wheel drive vehicle comprises a final reduction device for transmitting the output of the transmission to rear wheels, and a clutch for additional transmitting the output of the transmission to front wheels. An extra low speed gear device having a reduction gear ratio higher than that of the first speed gear of the transmission is provided in the transmission. A shifter rod operated by a gearshift lever is provided for engaging the extra low speed gear device, and a shifter rail is provided for engaging the clutch for four-wheel driving. A lock device operatively connected to the shifter rod and to the shifter rail is provided for locking the shifter rod when the shifter rail is shifted to disengage the clutch for preventing the engagement of the extra low speed gear device by the operation of the shifter rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.