.~.~.~ Separate, parallel formations supporting same load
DEFINITION
Classification: 198/663
(under subclass 662) Apparatus wherein the helical surface formations comprise laterally spaced members which form an underlying support for an article-type load, the load continuously contacting at least two of the members.
(1) Note. Movement of the load may be in a direction parallel to the longitudinal axes of the members, or may be diagonally thereof. In the absence of an axial component of movement, however, consideration should be given as to whether the members do not more nearly comprise one of the types of rolls provided for in subclasses 780+.
(2) Note. Confinement of the movement of the load to the axial direction usually is accomplished by either (a) the provision of an external guide as an abutment for some portion of the load, or (b) the use, in more or less equal number, of oppositely rotating, opposite-handed, helical surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625, for plural helical surfaces which act together upon a load, and wherein at least a portion of the load is so located as to be intersected by a line drawn between the axes of two of the helical surfaces.
