US PATENT SUBCLASS 242 / 571
.~ Radially expansible or contractile

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

570  DF  COIL HOLDER OR SUPPORT (E.G., SPINDLE, DISPENSER, OR SPOOL) {6}
571.~ Radially expansible or contractile {8}
571.1  DF  .~.~> Inflatable bladder {1}
571.3  DF  .~.~> Spool loading responsive {1}
571.6  DF  .~.~> Rotation responsive {1}
571.8  DF  .~.~> Axially compressed elastic mass
572  DF  .~.~> Longitudinally shiftable operator {2}
575  DF  .~.~> Transversely shiftable operator {4}
576  DF  .~.~> With particular actuator or contractor {1}
577  DF  .~.~> Individually adjustable segment or spoke {4}

DEFINITION

Classification: 242/571

Radially expansible or contractile:

(under subclass 570) Subject matter wherein the coil supporting structure includes a spindle or spool having shiftable means to vary an effective circumferential dimension of the supporting structure in a radial direction with respect to the coil axis, for selectively gripping or releasing an internal surface of the coiled material or spool on which the coiled material is wound while the structure remains assembled.

(1) Note. The shiftable means may be a part of a spindle, spool, or mounted spindle that alternately expands and contracts radially to retain and release a coil or spool, and generally provides an appreciable internal grip, although some may be no more than a shiftable retainer forcefully depressed radially upon insertion of the spool or relatively movable spindle cones shifted to grip the interior of a spool or coil.

SEE OR SEARCH THIS CLASS, SUBCLASS:

407.1, for an expansible or contractile spool in a reeling device.

SEE OR SEARCH CLASS

72, Metal Deforming,

478, for an adjustable or collapsible core in coiling apparatus for deforming metal. 82, Turning,

169, for an expandable mandrel for a turning lathe.

144, Woodworking,

268, for a coiling device in which wood or a wood product is bent.

160, Flexible or Portable Closure, Partition, or Panel,

263, for a flexible or portable panel having an adjustable dimension roll.

249, Static Molds,

178+, for an expansible or contractile core acting as an internal mold component.

269, Work Holders,

48.1+, for an expandable holder insertable into a work piece aperture.

279, Chucks or Sockets, particularly 2.01+, for an expandable chuck appropriate for general use.

411, Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener,

15+, for an expanding anchor or holding device.

474, Endless Belt Power Transmission Systems or Components, particularly

47+, for a pulley with expansible rim means.