Circle in Square Rigidity Mechanism

Abstract

A mechanical utility invention of a semi-circle in a square hollow space that creates a permanent or temporary rigidity key for the member beam of the parent application, U.S. Ser. No. 15/703,993. It has substantially more utilities than its conventional counterparts: spring latches, and expansion clips; in that it is different in shape, is gravity induced, movement is via compression, is comprised of minimal parts, can automatically prevent reverse motion of forward moving parts where prevention of accidental reverse motion is desired or necessary.

Claims

1. A semi-circle shaped key fitted in the hollow space cut out of a segment wall of a member beam from the parent application U.S. Ser. No. 15/703,993, used for gaining rigidity between the segments, wherein designed to prohibit reverse motion of segments joined together where movement of said segment is desired in one direction, but it is necessary to prohibit reverse motion in the opposite direction, comprising: a semi-circle, wherein said semi-circle is fastened loosely off center in a hollow square space in the walls of said segments; wherein said semi-circle comprises; a means for loosely fastening in the hollow space in a manner that allows for movement while receiving pressure from a passing segment, further said semi-circle comprising: an off center position fastening providing means for it to be weighted on one side, thereby returning to its original position of protruding into the cavity of the segment, and automatically prohibiting reverse motion of the subsequent segment.

Description

BRIEF DESCRIPTION

[0006] FIG. 1 shows a transparent view of two segments 1, the semi-circle 2, the square 32 and the clip 42.

[0007] FIG. 1A shows a transparent view of two segments 1, as recited in FIG. 1, and the semi-circle 2.

DETAILED DESCRIPTION

[0008] FIG. 1 shows a transparent view of two segments 1, in the expanded position, for which the semi-circle 2 is held by a loosely fastened attachment comprising a pin or rivet 42. The semi-circle hands is in the square 42 hollow space. The semi-circle is in the compressed position caused by pressure from the passing of a subsequent segment. During expansion the loosely fitted circle 2 in square 32 provides a mechanical means for the circle 2 to be pushed from the cavity and through the square 42 hollow space thus clearing the way for the subsequent segment 1 to pass.

[0009] FIG. 1A shows two segments 1, wherein the semi-circle is fastened in the weighted position; thus causing it to return to its original position thereby prohibiting reverse motion of subsequent segments 1. inner cavity, effectively creating a block which prohibits reverse motion of subsequent segments 1. An additional locking mechanism can provide permanence if desired; such as, but not limited to, a clip (not shown) for which to hold the semi-circle 2 in a particular position.