Cylinder-type perpetual calendar assembly

Details Cylinder-type perpetual calendar assembly Cylinder-type perpetual calendar assembly

1998-02-25

1999-09-14

Melius, Terry Lee

Card, picture, or sign exhibiting

Calendars

Rotatable

40111, G09D 306, G09D 308

Patent

active

059503386

ABSTRACT:
A perpetual calendar assembly includes a transparent outer cylinder having a first end portion, a mediate portion and a second end portion. A first opaque ring-shaped piece is mounted on the first end portion of the outer cylinder and longitudinally defines a first viewing slot. A second opaque ring-shaped piece is mounted on the second end portion of the outer cylinder and longitudinally defines a second viewing slot. A first inner cylinder is rotatably mounted in the outer cylinder and includes a first portion received in the first end portion of the outer cylinder and a second portion received in the mediate portion of the outer cylinder. A second inner cylinder is rotatably mounted in the outer cylinder and includes a first portion received in the second end portion of the outer cylinder and a second portion received in the mediate portion of the outer cylinder.

REFERENCES:
patent: 2400268 (1946-05-01), Skene
patent: 2998666 (1961-09-01), Stern
patent: 4376346 (1983-03-01), Nelson
patent: 5581920 (1996-12-01), Hydary

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