Card – picture – or sign exhibiting – Changing exhibitor – Rotatable carrier for display item
Reexamination Certificate
1999-02-09
2001-04-17
Silbermann, Joanne (Department: 3628)
Card, picture, or sign exhibiting
Changing exhibitor
Rotatable carrier for display item
C040S524000, C040S505000
Reexamination Certificate
active
06216371
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a revolving signboard for conveying multiple messages and more particularly to an improved rotary signboard which incluees a plurality of faces, e.g. square or rectangular faces, which rotate for conveying multiple messages or images. Advantageously, the signboard can comprise a plurality of square pillars which rotate for conveying multiple messages.
2. Description of Relates Art
Various types of revolving signboards are known in the art. Generally, if the structure of a conventional revolving signboard is simple, such a conventional revolving signboard cannot convey multiple messages. However, since the structure of such a conventional signboard is complicated, it is expensive to manufacture, difficult in use and ugly in appearance.
A conventional triangular prism-type signboard is known in the art; that is, a signboard which has thrree faces for conveying three seprate massages. However, since such a conventional triangular prism-type signboard revolves 120° independently or rotates in regular order, it cannot convey more than three messages.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an improved revolving signboard for conveying multiple messages which eliminates the above problems encountered with conventional revolving signboards.
Another object of the present invention is to provide a revolving signboard which includes a plurality of square pillars, a conveying system, for example, a linked chain having a pair of gears and a two-way motor whereby upon operating the motor, the square pillars are moved by the chain for exposing one face thereof, and the pillars rotate 90° in one revolution of the chain for exposing another face thereof, whereby the revolving signboard of the present invention is capable of conveying multiple messages. Also, since the motor operates in a two-way direction, i.e., in a clockwise and counterclockwise direction, the face can be changed from bottom to top or from top to bottom for conveying multiple messages.
A further object of the present invention is to provide a revolving signboard for conveying multiple messages which is simple in structure, inexpensive to manufacture, durable in use, and refined in appearance.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modficiations within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
REFERENCES:
patent: 844344 (1907-02-01), Fletcher
patent: 1256645 (1918-02-01), Barnett
patent: 1753203 (1930-04-01), Hoetger
patent: 1802725 (1931-04-01), Larcher
patent: 2238177 (1941-04-01), Marks, Jr. et al.
patent: 2266676 (1941-12-01), Carter
patent: 3299551 (1967-01-01), Llobet
patent: 2382729 (1978-11-01), None
patent: 2626398 (1989-07-01), None
Birch & Stewart Kolasch & Birch, LLP
Silbermann Joanne
LandOfFree
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