(under subclass 662) Apparatus wherein the plural helical surface formations are coupled one to another in an end to end relationship.
(1) Note. The coupling usually is of a disconnectable or otherwise separable nature, but may comprise a permanent union.
(2) Note. If each surface is formed upon a shaft, it is sufficient that the shafts be coupled end to end, in which event there may be--especially in the instance of an intermediate bearing or an intermediate drive--a brief discontinuity. In turn, it is frequently the practice to utilize one or more short helical surface portions to fill in
a discontinuity of this nature.
(3) Note. This and the indented subclasses usually involve also the corresponding connection between any housing members which may be present.
SEE OR SEARCH THIS CLASS, SUBCLASS:
602+, for a conveyor system having plural, power-driven sections arranged in a single flow path.
