Ratio change gear speed synchronizing in a tractor transmission

Patent · Tue Aug 18 04:00:00 EDT 1987

OSTI ID:6098350

Beim, R

A transmission is described for producing multiple speed ratios comprising: a first shaft adapted for connection to a power source, an input shaft, a second shaft, a third shaft, a fourth shaft, a countershaft, and an output shaft; first gearing means for producing multiple speeds of the input shaft in relation to the speed of the first shaft; first clutch means for selectively driveably connecting the first shaft to the input shaft through the first gearing means, whereby the input shaft is driven at various speeds in accordance with the selected operation of the first clutch means; a second gearing means including multiple pairs of meshing gears and pinions carried on the input shaft the second shaft and the countershaft; first synchronizer clutch means for driveably connecting the gear-pinion pairs of the second gear means selectively to the second shaft; second clutch means for driveably connecting the second shaft to the third shaft; third clutch means for driveably connecting the second shaft to the fourth shaft; third gearing means including multiple gear-pinion pairs including gears carried on the third shaft and fourth shaft meshing with pinions carried on the output shaft; and second synchronizer clutch means for driveably connecting the gear-pinion pairs of the third gearing means selectively to the output shaft.

• Assignee: Ford Motor Co., Dearborn, MI
• Patent Number(s): US 4686869
• OSTI ID: 6098350
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL EQUIPMENT
EQUIPMENT
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
SHAFTS
SPEED REGULATORS
SYNCHRONIZATION
TRUCKS
VEHICLES
VELOCITY