CLUTCH, CLUTCH FORMING PUNCH, AND METHOD OF MANUFACTURING CLUTCH
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Mar 29, 2013
filing date -
Mar 29, 2013
priority date (Note) -
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Abstract
A clutch comprises: an annular friction plate; an annular metal support having a bottom for supporting thereon the friction plate, an inner wall and an outer wall coaxial with the inner wall, both walls perpendicular to the bottom; and a swaging structure consisting of a first and a second multiplicity of swaging sections provided along the inner wall and along the outer wall, respectively, at equal angular intervals to hold the friction plate on the bottom in such a way that the latter swaging sections are offset from the former swaging sections in the circumferential direction so as not to coincide with the former swaging sections with respect to any radial directions. Such clutch can be manufactured by appropriate use of an inventive punch adapted to form the swaging structure discussed above.
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