The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 1994
Filed:
Jun. 01, 1992
Yasuo Matsumoto, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A single-use camera is contained in an underwater housing, which as a box-shaped plastic housing body of which an opening is formed in the bottom. The bottom opening is covered with a watertight sheet sealed to an edge around the bottom opening, and keeps the camera watertight. The watertight sheet is constituted of a sandwich of an inner polystyrene (PS) layer, an aluminum core sheet, and an outer polyethylene terephthalate (PET) layer. The PS layer is used for heat sealing to the housing body. A bottom lid is fitted on the housing body and protects the watertight sheet. In a preferred embodiment, there is also a PET layer between the PS layer and the aluminum core sheet.