Machine element or mechanism – Elements – Gear casings
Patent
1979-03-27
1981-07-28
Krizmanich, George H.
Machine element or mechanism
Elements
Gear casings
74701, 74730, F16H 3708, F16H 4700
Patent
active
042803748
ABSTRACT:
A transmission for use in a motor vehicle having a torque converter; an auxiliary speed change-gear assembly coaxial with the torque converter; an intermediate shaft extending through the auxiliary speed change-gear assembly; a countershaft extending in parallel to the intermediate shaft of the auxiliary speed change-gear assembly; and a final reduction-gear assembly for transmitting a driving force from the countershaft to wheel axles. The auxiliary speed change-gear assembly provides a plurality of forward speed range drives including overdrive and reverse drive and has an output driving gear. A driven gear is mounted on the countershaft and meshes with the driving gear. The transmission has at least one thrust bearing mounted on the intermediate shaft of the auxiliary speed change-gear assembly for rotatably supporting the driving gear and a member threadably engaged into one end of an auxiliary speed change-gear assembly casing for asserting a predetermined force on the bearing supporting the driving gear. Preferably, the at least one bearing comprises a first pair of counterbalancing thrust bearings mounted on the intermediate shaft rotatably supporting the driving gear. A second pair of thrust bearings are provided for receiving thrust-reacting forces from the first pair of bearings. The force-exerting member is preferably threadably engaged into the one end of the auxiliary speed change-gear assembly casing remote from the torque converter, exerts a predetermined force on one bearing of the second pair, and is accessible from outside the casing.
REFERENCES:
patent: 2454685 (1948-11-01), Avila
patent: 2831372 (1958-04-01), Boughner
patent: 3035455 (1962-05-01), Peras
patent: 3505905 (1970-04-01), Lepelletier
patent: 3548681 (1970-12-01), Crooks
patent: 3648544 (1972-03-01), Tanaka
patent: 3722301 (1973-03-01), Crooks
patent: 4056986 (1977-11-01), Hobbs
patent: 4122731 (1978-10-01), Bendure et al.
patent: 4128022 (1978-12-01), Ritter
Kubo Seitoku
Kuramochi Koujiro
Kyushima Tatsuo
Krizmanich George H.
Toyota Jidosha Kogyo Kabushiki Kaisha
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