Brake band drum for planetary gear-type transmissions
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United States of America Patent
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-
Jul 31, 1990
Grant Date -
N/A
app pub date -
Mar 11, 1988
filing date -
May 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brake band drum for a planetary gear-type automatic transmission in which a clutch is formed inside a press-manufactured planetary gear input member coupled to a press-manufactured clutch cylinder and one member of a planetary gear mechanism, and a band brake is arranged on the outer peripheral side of the clutch cylinder or planetary gear input member, characterized in that the clutch cylinder or planetary gear input member is fitted by being splined, and an engaging surface of the band brake is formed on an outer peripheral surface of the clutch cylinder or planetary gear input member. Thus, the brake band drum is formed by fitting the brake band drum and clutch cylinder together. This makes it possible to dispense with electron beam welding. As a result, costs and weight can be reduced.
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