Vacuum cleaner dust container filling indicator device
First Claim
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1. An indicator device for a vacuum cleaner visible from the outside thereof and showing the amount of filling of a vacuum cleaner dust container comprising:
- a casing for said indicator device having a transparent portion, a pair of resilient spaced closed bodies in said casing, a frame for said closed bodies in said casing, means interconnecting said closed bodies and mounted in said casing, said means comprising a frame having end pieces each of which is secured to an adjacent one of said closed bodies and arranged laterally of its respective end piece, a conduit connecting one of said closed bodies to the atmosphere, another conduit connecting the other of said closed bodies to the interior of said dust container, said closed bodies acting under the influence of the pressure differential between the atmosphere and the interior of said dust container to expand and contrast said closed bodies so that movement occurs linearly in said indicator device which can be visually observed through said transparent portion to indicate the amount of filling present at any given time in said dust container.
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Abstract
An indicator mounted on a vacuum cleaner housing for showing at any given time the degree of filling of the dust container. The indicator includes bellows which are connected to both the outside of the dust container and the interior of the vacuum cleaner housing whereby the bellows are acted upon under the influence of the changing pressure differential to respectively expand or contract the bellows thereby indicating the degree of clogging of the dust container.
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Citations
8 Claims
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1. An indicator device for a vacuum cleaner visible from the outside thereof and showing the amount of filling of a vacuum cleaner dust container comprising:
- a casing for said indicator device having a transparent portion, a pair of resilient spaced closed bodies in said casing, a frame for said closed bodies in said casing, means interconnecting said closed bodies and mounted in said casing, said means comprising a frame having end pieces each of which is secured to an adjacent one of said closed bodies and arranged laterally of its respective end piece, a conduit connecting one of said closed bodies to the atmosphere, another conduit connecting the other of said closed bodies to the interior of said dust container, said closed bodies acting under the influence of the pressure differential between the atmosphere and the interior of said dust container to expand and contrast said closed bodies so that movement occurs linearly in said indicator device which can be visually observed through said transparent portion to indicate the amount of filling present at any given time in said dust container.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
Specification