US PATENT SUBCLASS 114 / 67 R
.~ Antifriction surfaces


Current as of: June, 1999
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114 /   HD   SHIPS

65 R  DF  BUILDING {17}
67 R.~ Antifriction surfaces {1}
67 A  DF  .~.~> Air and oil films

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 114/67

Devices providing means for diminishing the resistance between the water and the vessel when moving through the water and effective in increasing the speed. The present types comprise friction-roller surfaces, conveyers, and air-distributing means or attachments to produce a better cutting edge.

SEE OR SEARCH THIS CLASS, SUBCLASS:

232, and 233, for devices for distributing oils or liquids between the ship's skin and the water.

SEE OR SEARCH CLASS

440, Marine Propulsion,

38+, and indented subclasses for vessels having means to expel air or water about the surface of the submerged hull with sufficient effect and force to propel the vessel.