US PATENT SUBCLASS 228 / 2.3
.~ Means to rotate one surface relative to the other about a fixed axis

Current as of: June, 1999
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228 /   HD   METAL FUSION BONDING

2.1  DF  INCLUDING MEANS TO PROVIDE HEAT BY FRICTION BETWEEN RELATIVELY MOVING SURFACES (I.E., FRICTION WELDER) {1}
2.3.~ Means to rotate one surface relative to the other about a fixed axis

DEFINITION

Classification: 228/2.3

Means to rotate one surface relative to the other about a fixed axis:

(under subclass 2.1) Device wherein the relative movement comprises rotation of one of the surfaces about a line passing generally normally therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

114.5, for a method of fusion bonding including heating of the work by rotating one surface relative to another.

SEE OR SEARCH CLASS

72, Metal Deforming,

67+, for a device for deforming work turning about an axis by causing relative rubbing motion between such work and a tool.