US PATENT SUBCLASS 109 / 72
.~.~.~.~ Lug or interrupted thread type

Current as of: June, 1999
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109 /   HD   SAFES, BANK PROTECTION, OR A RELATED DEVICE

58  DF  WALL AND PANEL STRUCTURES, CLOSURES AND CLOSURE ADJUNCTS {5}
64  DF  .~ Closures {9}
69  DF  .~.~ Plural motions {2}
71  DF  .~.~.~ Rotary and axial movement {1}
72.~.~.~.~ Lug or interrupted thread type

DEFINITION

Classification: 109/72

(under subclass 71) Devices wherein, by the use of lugs or interrupted threads, the rotary movement necessary to release the closure takes place for a fraction of a revolution.

SEE OR SEARCH CLASS

89, Ordnance,

20.2+, for similar closures for breeches in ordnance.

285, Pipe Joints or Couplings,

391, for a screw coupling comprising interrupted threads, and subclass 401 for a socket joint of the lugged pipe, rotary engagement type. See the Search Notes thereunder. 411, Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener,

417, for externally threaded fasteners having circumferentially interrupted threads.