US PATENT SUBCLASS 280 / 511
.~.~.~ Ball and socket

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
504  DF  .~.~ Coupling {7}
511.~.~.~ Ball and socket {2}
512  DF  .~.~.~.~> Pivoted jaw or retainer
513  DF  .~.~.~.~> Reciprocating jaw or retainer

DEFINITION

Classification: 280/511

(under subclass 504) Devices in which the complementary coupling parts are in the form of a ball and a socket.

SEE OR SEARCH THIS CLASS, SUBCLASS:

508+, for ball and socket couplings of the self-coupling type.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

91+, for ball and socket joints of general utility.

403, Joints and Connections, 90, 114, and 127+ for ball and socket joints of general utility.