US PATENT SUBCLASS 139 / 200
.~.~.~.~ Brake tension
Current as of: June, 1999
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DEFINITION
Classification: 139/200
The thread is fed out from a rotating bobbin, and the tension is created by a friction brake applied to any part of the bobbin, which part may be the wound-thread surface.
SEE OR SEARCH CLASS
242, Winding, Tensioning, or Guiding,
421+, 422+, and 156+ for tensioning a running material.