Shutter for covering a window opening in a case that contains a

Details Shutter for covering a window opening in a case that contains a Shutter for covering a window opening in a case that contains a

1989-04-24

1991-06-04

Wolff, John H.

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206444, 369291, G11B 23033, B65D 8530

Patent

active

050219138

ABSTRACT:
A shutter for covering the head window opening in a protective case that encases a flexible disk is manufactured from thinner and less expensive material and is made smaller in order to result in significant cost savings. The shutters are manufactured so as to form a band of connected shutters. The band of connected shutters is then wound to form a wound roll of shutters that are not susceptible to damage as a result of repeated contact with other shutters. Adjacent shutters can be connected to one another by strips of connecting material arranged in various manners.

REFERENCES:
patent: 4589105 (1986-05-01), Nemoto et al.
patent: 4698714 (1987-10-01), Sugawara et al.
patent: 4710839 (1987-12-01), Izuka et al.
patent: 4714973 (1987-12-01), Kato et al.
patent: 4739426 (1988-04-01), Muroaka
patent: 4849844 (1989-07-01), Kato
"ANSI X3.137-1988", American National Standard Institute, Inc. Oct. 1988, pp. 1-28.

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