Power transmitting apparatus
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United States of America Patent
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-
Jul 3, 2007
Grant Date -
Aug 25, 2005
app pub date -
Feb 22, 2005
filing date -
Feb 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A power transmitting apparatus, which can simultaneously achieve radial size reduction and improve strength of the driving clutch plate, has a clutch housing (2) and a plurality of driving clutch plates (6) each having projections (6a) projecting radially outward from the periphery of the driving clutch plate (6). The projections (6a) engages the clutch housing (2) to rotate with it. A clutch member (4) has a plurality of driven clutch plates (7) alternately arranged between the driving clutch plates (6). A pressure plate (5) is provided to carry out the pressure-contact or release of the driving clutch plates (6) relative to the driven clutch plates (7). Each of the driving clutch plates (6) has a peripheral surface (.beta.), a projected wall surface (.alpha.), of the projections (6a), and a connecting surface (.gamma.). Each connecting surface (.gamma.) connects the projected wall surfaces (.alpha.) and the peripheral surface (.beta.). Each of the connecting surfaces (.gamma.) is an arcuate surface smoothly merged into the projected wall surface (.alpha.) and forms an undercut, recessed radially inward, from the peripheral surface (.beta.) of the driving clutch plate (6).
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