(under subclass 428) Process including fabricating and assembling or merely assembling a spirally convoluted member of substantially uniform cross section form to a second member so that the axis of the spiral member lies substantially parallel to the axis of a right cylindrical surface upon or within the second member.
(1) Note. These helices are usually screw threads assembled either upon a rod or within a cylindrical aperture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173, for a process of making a spring, generally, including making a helical spring.
240.5, for means to insert and/or remove a helix by rotation.
435, for a process of assembling a plurality of interconvoluted spiral members to form a tube.
890.03+, for a process of making a radiator to be filled with a liquid. SEE OR SEARCH CLASS
72, Metal Deforming,
135+, for a process of fabricating a helically convoluted metal member.
140, Wireworking, for a process of making a product of wire, including combined operations, generally.
