Title:
【発明の名称】歯科用フィルムパケットの改善
Document Type and Number:
Japanese Patent JP2888451
Kind Code:
B2
Abstract:
A comfort-enhancing improvement upon a known dental film packet having sensitized film and protection opaque sheets enclosed by a light-tight envelope that includes an opposed pair of generally parallel walls covering the sheets, those walls being joined together along facing marginal areas thereof surrounding the sheets so as to define a main body portion and a perimetric edge portion of the envelope. The improvement comprises a deflectable lateral extension of the perimetric edge portion, the extension projecting outwardly therefrom by an amount rendering the edge portion and its extension sufficiently flexible to be readily deflected and folded back around part of the main body portion toward one of said walls, thereby forming a curved resilient cushion where so folded, when the packet is intraorally positioned for a radiographic exposure. In the embodiment illustrated, the extension projects continuously from all of, and is formed as an integral continuation of, the perimetric edge portion, and thus surrounds the main body portion with a pliant cushioning flap.
Inventors:
GEI JOOJI KYARORU
Application Number:
JP50065989A
Publication Date:
May 10, 1999
Filing Date:
November 13, 1989
Export Citation:
Assignee:
IISUTOMAN KODATSUKU CO
International Classes:
G03B42/04; A61B6/14; G03C3/00; (IPC1-7): G03C3/00; A61B6/14
Domestic Patent References:
| JP57121942U |
Other References:
【文献】米国特許4791657(US,A)
Attorney, Agent or Firm:
Takashi Ishida (3 others)