Gas separation – Flexible or collapsible bag type – Valved – self-closing – or apparatus contained bag closing means
Patent
1989-09-25
1991-09-03
Nozick, Bernard
Gas separation
Flexible or collapsible bag type
Valved, self-closing, or apparatus contained bag closing means
B01D 4602
Patent
active
050450999
ABSTRACT:
A vacuum cleaner bag is described which has a sealing closure device for an inlet opening in a collar of the vacuum cleaner bag. A disc, partially die-cut out of the collar or a separate disc attached to the collar is arranged for hinged movements between a covering position wherein the inlet opening is effectively closed and sealed and and uncovering position wherein the inlet opening is accessible for passage of an inlet fitting of a vacuum cleaner. A locking mechanism is provided for positively locking the hinged cover to disc in its covering position to prevent inadvertent escape of debris from a filled vacuum cleaner bag after removal from the vacuum cleaner. The locking mechanism may consist of a projecting finger on the disc or cover which is forced beyond the inlet opening and snaps behind the collar, or the projecting finger may be secured with any suitable fastener, such as hook and loop tape.
REFERENCES:
patent: 2070674 (1937-02-01), Muentenere
patent: 2686330 (1954-08-01), Wales
patent: 3237846 (1966-03-01), Brown
patent: 3933541 (1976-01-01), Johansson
Mastercraft Industries, Inc.
Nozick Bernard
LandOfFree
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