US PATENT SUBCLASS 267 / 69
ELASTIC EXTENSION DEVICES


Current as of: June, 1999
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267 /   HD   SPRING DEVICES

69ELASTIC EXTENSION DEVICES {2}
70  DF  .~> Compression spring {1}
73  DF  .~> Tension spring {1}


DEFINITION

Classification: 267/69

(under the class definition) Miscellaneous devices of more or less general application which contain one or more elastic elements, so that when said devices are subjected to tension they will be extended and when the tension is removed they

will resume their normal length.

(1) Note. Devices whose construction especially adapts them to withstand both extension and contraction are not included here, but elastic draft-links are included and devices including a novel combination of fastening element and elastic element.

SEE OR SEARCH CLASS

2, Apparel,

324, and 339, for garment supporters including spring devices.

59, Chain, Staple, and Horseshoe Making, 79.1+, for elastic links intended to be connected end-to-end to like elements to form an elastic chain.

114, Ships,

205, for tension relievers combined with a traveler for sail, and subclasses 213+ for tension relievers specific to use on ships.

124, Mechanical Guns and Projectors,

7+, for spring devices actuating projectile throwing arms, and subclasses 16+ for spring devices actuating a plunger or similar device to impel a projectile.

242, Winding, Tensioning, or Guiding,

226, and 251+ for a spring powered fishing reel, and 371+ for a spring powered reel of general use.

343, Communications: Radio Wave Antennas,

895, for spiral or helical type antennas.