US PATENT SUBCLASS 156 / 118
.~.~.~ Tubular (airtight) torus (e.g., auto tube-making)

Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

1  DF  METHODS {7}
60  DF  .~ Surface bonding and/or assembly therefor {93}
110.1  DF  .~.~ Making flexible or resilient toroidal shape; e.g., tire, inner tube, etc. {9}
118.~.~.~ Tubular (airtight) torus (e.g., auto tube-making) {4}
119  DF  .~.~.~.~> Multichamber safety tube
120  DF  .~.~.~.~> Valve-applying
121  DF  .~.~.~.~> Applying reinforcing material to external tube surface
122  DF  .~.~.~.~> Joining tube ends to form torus

DEFINITION

Classification: 156/118

(under subclass 110.1) Processes for making toroidal shapes which are structurally airtight and are uniquely adapted to hold fluids under pressure.

(1) Note. The articles produced by this process must be, per se, airtight, as for example, a tube for a tire. So called "tubeless" tires which require the wheel to be airtight are not considered to be subject matter for this subclass.

SEE OR SEARCH CLASS

152, Resilient Tires and Wheels,

510+, for pneumatic tube structures.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses, particularly

315, and 326 pertaining to employing toroidal mold bags and producing toroidal bodies, respectively.