Gas separation – Flexible or collapsible bag type – With flow line coupling means
Reexamination Certificate
2000-04-26
2001-08-21
Simmons, David A. (Department: 1724)
Gas separation
Flexible or collapsible bag type
With flow line coupling means
C055S361000, C055S377000, C055SDIG002
Reexamination Certificate
active
06277165
ABSTRACT:
TECHNICAL FIELD
The present invention relates to disposable vacuum cleaner bags and more particularly to a vacuum cleaner bag that is attachable to the discharge tube of a vacuum cleaner and which includes the improvement of having a transparent structure provided opposite the conventionally provided coupling opening for allowing the user to visually identify and align the coupling opening with the discharge tube of the vacuum cleaner during installation of the vacuum cleaner bag as well as defining a tube end receiving cavity for receiving the tube end of the discharge tube of the vacuum cleaner so that a collar surrounding the coupling opening of the vacuum cleaner bag may be positively and effectively seated onto the discharge tube without the fear that excessive pushing on the vacuum cleaner bag during installation will cause the discharge tube to rupture a wall of the vacuum cleaner bag located opposite the coupling opening.
BACKGROUND ART
Disposable vacuum cleaner bags typically have a collar surrounding a coupling opening that must be seated over a tube end of a vacuum cleaner discharge tube that extends into the vacuum cleaner bag holding chamber. This is a cumbersome task because the coupling opening is typically on a surface of the vacuum cleaner bag facing away from the user and toward an enclosure wall from which the vacuum cleaner discharge tube extends. It would be a benefit, therefore, to have a vacuum cleaner bag with a mechanism for allowing the user to visually align the coupling opening with the discharge tube of the vacuum cleaner. In addition, because many users fear that applying the positive force necessary to seat the collar onto the discharge tube will force discharge tube through the facing wall of the newly installed vacuum cleaner bag, it would be a further benefit to have a vacuum cleaner bag that included a discharge tube receiving structure positioned opposite the coupling opening for receiving the tube end of the discharge tube when the collar is being positively seated around a base end of the discharge tube.
GENERAL SUMMARY DISCUSSION OF INVENTION
It is thus an object of the invention to provide an improved vacuum cleaner bag that includes a mechanism for allowing the user to visually align the coupling opening with the discharge tube of the vacuum cleaner.
It is a further object of the invention to provide an improved vacuum cleaner bag that includes a discharge tube receiving structure positioned opposite the coupling opening for receiving the tube end of the discharge tube when the collar is being positively seated around a base end of the discharge tube.
It is a still further object of the invention to provide an improved vacuum cleaner bag that accomplishes all or some of the above objects in combination.
Accordingly, an improved vacuum cleaner bag is provided. The improvement is for a vacuum cleaner bag for use with a vacuum cleaner having a discharge tube, the vacuum cleaner bag including a bag portion formed from a filtering material and having a first exterior surface to which a substantially rigid collar surrounding a coupling opening through the first exterior surface thereof into an interior dirt trapping chamber of the bag portion and through which a tube end of the discharge tube of the vacuum cleaner is inserted to couple the vacuum cleaner bag to the vacuum cleaner and a second exterior surface positioned opposite the coupling opening. The improvement to the vacuum cleaner bag includes a tube passage opening formed through the second exterior surface and concentrically aligned with the coupling opening and sized to allow passage therethrough of the tube end of the discharge tube; and a discharge tube receiving structure attached to the second exterior surface of the bag portion surrounding the tube passage opening and defining a tube end receiving cavity exteriorly of the interior dirt trapping chamber for receiving the tube end when the tube end is sequentially inserted through the coupling opening and then the tube passage opening; the discharge tube receiving structure including a transparent portion positioned to allow a user to see simultaneously through the discharge tube receiving structure, the tube passage opening and the coupling opening to accurately align the coupling opening with the tube end of the discharge tube when installing the bag portion in connection with the vacuum cleaner for use.
REFERENCES:
patent: 4070170 (1978-01-01), Veiwfelt
patent: 5400465 (1995-03-01), Bosses et al.
patent: 5464460 (1995-11-01), Bosses
patent: 5613989 (1997-03-01), Bosses
patent: 6033451 (2000-03-01), Fish et al.
patent: 6192787 (2001-02-01), Dyson et al.
Lovett Donna M.
Lovett Robert R.
Breaux Joseph N.
Pham Minh-Chau T.
Simmons David A.
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