US PATENT SUBCLASS 29 / 889.6
.~.~ Propeller making

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
889  DF  .~ Impeller making {7}
889.6.~.~ Propeller making {1}
889.61  DF  .~.~.~> Utilizing hollow tube blank

DEFINITION

Classification: 29/889.6

Propeller making:

(under subclass 889) Process for manufacturing a device consisting of a central hub with radiating blades twisted to form part of a substantially helical surface that is used to propel a vehicle, e.g., airplane or ship.

SEE OR SEARCH CLASS

416, Fluid Reaction Surfaces (i.e., Impellers),

223+, for specific blade structure.