Concentric rotating disc assembly

Details Concentric rotating disc assembly Concentric rotating disc assembly

1990-04-04

1991-05-21

Hix, L. T.

Registers

Calculators

Single axis

G06C 100

Patent

active

050177621

ABSTRACT:
A concentric rotating disc assembly includes a pair of outer discs and an intermediate disc. The intermediate disc rotates about a journal which is die cut from the center of the intermediate disc with each face of the journal adhesively secured to an inner face of an abutting outer disc. The assembly is fabricated from a rectangular paperboard blank having parallel fold lines which divide the blank into three square panels. Score lines are provided in each panel to define its respective disc and a central circular score line in the intermediate panel defines the periphery of the journal. When the panels of the blank are folded along their fold lines in a predetermined order, the panel carrying the intermediate disc is positioned between the panels carrying the outer discs and all discs are concentrically registered. Fabrication is completed by removing excess portions of the panels from the discs along the score lines and then rotating the intermediate disc about the journal to separate the intermediate disc from the journal.

REFERENCES:
patent: 1162230 (1915-07-01), Foster
patent: 1714839 (1929-10-01), Ashburn
patent: 2423764 (1947-04-01), Flitton
patent: 2435885 (1948-10-01), Gewirtzman
patent: 2492906 (1949-01-01), Voges
patent: 3051383 (1962-08-01), Payne
patent: 3249085 (1966-08-01), St. Jean
patent: 3280788 (1966-11-01), Robinson
patent: 3902656 (1975-09-01), Rothchild
patent: 4132348 (1979-01-01), Bromberg
patent: 4323609 (1980-12-01), Bromberg
patent: 4538055 (1985-08-01), Riehle

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