US PATENT SUBCLASS 28 / 275
.~.~.~.~.~ Opposed resonance chamber

Current as of: June, 1999
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28 /   HD   TEXTILES: MANUFACTURING

217  DF  THREAD FINISHING {4}
219  DF  .~ Surface modification of running length {5}
247  DF  .~.~ Texturing, e.g., crimping {10}
271  DF  .~.~.~ Fluid jet {3}
274  DF  .~.~.~.~ Having orthogonally arranged flow paths {2}
275.~.~.~.~.~ Opposed resonance chamber

DEFINITION

Classification: 28/275

(under subclass 274) Method or apparatus wherein a recess is positioned opposite the point of entry of the fluid stream for receiving and altering the flow characteristics of the fluid after passage of the same through or against the thread to thus modify the degree of turbulence to which the thread is subjected.

(1) Note. Such chambers are usually provided to prevent disorderly secondary gas currents from interfering with thread entanglement by the jet.