US PATENT SUBCLASS 464 / 30
OVERLOAD RELEASE COUPLING

Current as of: June, 1999
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464 /   HD   ROTARY SHAFTS, GUDGEONS, HOUSINGS, AND FLEXIBLE COUPLINGS FOR ROTARY SHAFTS

30OVERLOAD RELEASE COUPLING {9}
31  DF  .~> Including thermally responsive element
32  DF  .~> Torque transmitted via frangible element {1}
34  DF  .~> Torque transmitted via radially spaced deformable roller
35  DF  .~> Torque transmitted via a ball {1}
37  DF  .~> Torque transmitted via resiliently biased positive drive connection (e.g., cam and follower) {1}
40  DF  .~> Torque transmitted via frictional engagement of coil spring
41  DF  .~> Torque transmitted via plural circumferentially spaced friction elements
42  DF  .~> Torque transmitted via frictional engagement of conical or frustoconical surfaces {1}
45  DF  .~> Torque transmitted via frictional engagement of planar radially extending surfaces {1}

DEFINITION

Classification: 464/30

OVERLOAD RELEASE COUPLING:

(under the class definition) A flexible coupling wherein means is provided for transmitting torque between input and output members so as to accommodate relative rotation between said members when resistance to rotation of said output member exceeds a predetermined value, said means including either (a) a device which is designed to rupture when said resistance to rotation exceeds said predetermined value, or (b) a device which slips or disengages when said resistance to rotation exceeds said predetermined value but which automatically reengages without operator intervention or other additional operation when said resistance to rotation no longer exceeds said predetermined value.

SEE OR SEARCH THIS CLASS, SUBCLASS:

10, for an overload release coupling including means to supply a lubricant to relatively rotating surfaces.

25, for a coupling for transmitting a limited pulsating torque via a fluid.

SEE OR SEARCH CLASS

81, Tools,

467+, for a wrench or screwdriver responsive to torque on the work.

172, Earth Working, 261+, for an earthworking element combined with means permitting said element to shift in response to an overload.

173, Tool Driving or Impacting,

93.5, for a rotary tool drive having torque responsive impact in an impacting device.

192, Clutches and Power-Stop Control,

56.1+, for an overload release clutch, and see a statement of

the line in the search class notes following the general definition of Class 464.

241, Solid Material Comminution or Disintegration,

32, for an overload release means for comminution apparatus.