Fire proof picture frame

Details Fire proof picture frame Fire proof picture frame

2007-05-25

2008-11-18

Miller, William L. (Department: 3677)

Card, picture, or sign exhibiting

Picture frame

Having seal

C040S700000, C040S732000

Reexamination Certificate

active

07451562

ABSTRACT:
A container for a picture frame capable of withstanding temperatures of 500-1000° F. for 15 to 20 minutes that employs the use of water as its main protectant. The present invention works on the property of the phase change of water from a liquid to a gas. During the phase change the temperature of the water will remain constant until all of the water has changed to gas. At sea level this temperature is about 212° F. of 100° C. Tests showing that most photographic paper can withstand temperatures of this magnitude. This test involved putting a picture is a watertight plastic baggie and submerging it in boiling water for 20 minutes. The photograph emerged unchanged.

REFERENCES:
patent: 1777944 (1930-10-01), Trovato
patent: 2575470 (1951-11-01), Salz
patent: 3709169 (1973-01-01), Gauger et al.
patent: 4223739 (1980-09-01), Waters
patent: 4353327 (1982-10-01), Shroyer
patent: 5078093 (1992-01-01), Flaherty
patent: 5515628 (1996-05-01), Rankin
patent: 6415739 (2002-07-01), Orendorff et al.
patent: 2007/0277418 (2007-12-01), Magallanes et al.

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