Upright vacuum cleaner with full bag and clogged filter indicators thereon
First Claim
1. A vacuum cleaner comprising:
- a housing having a floor-engaging nozzle fluidly interconnected with a filter bag in a closed filter bag chamber in the housing through a suction passageway;
an exhaust vent in the filter bag chamber to exhaust filtered air exiting from the filter bag chamber;
a vacuum motor in the housing operably coupled to the suction passageway to draw dirty air through the floor-engaging nozzle and for passing the dirty air through the filter bag;
an exhaust filter mounted in the exhaust vent;
a sensor operably connected to the filter bag chamber to detect a condition representative of the flow of air through the exhaust filter element; and
an exhaust filter indicator interconnected with the sensor for generating a signal when the condition reaches a predetermined level.
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Accused Products
Abstract
A vacuum cleaner comprises a housing having a floor-engaging nozzle fluidly interconnected with a filter bag in a closed filter bag chamber in the housing through a suction passageway, an exhaust vent in the filter bag chamber to exhaust filtered air exiting from the filter bag chamber and a vacuum motor provided in the housing to draw air from the floor-engaging nozzle to the filter bag. An exhaust filter is mounted in the exhaust vent. A sensor in the filter bag chamber detects a condition representative of the flow of air through the exhaust filter element and an exhaust filter indicator interconnected with the sensor provides a signal to a user when the condition reaches a predetermined level to indicate a clogged condition of the exhaust filter. A sensor and indicator can also be provided for the filter bag so that independent signals can be generated relating to the clogged condition of one or both of the filter bag and exhaust filter.
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Citations
25 Claims
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1. A vacuum cleaner comprising:
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a housing having a floor-engaging nozzle fluidly interconnected with a filter bag in a closed filter bag chamber in the housing through a suction passageway; an exhaust vent in the filter bag chamber to exhaust filtered air exiting from the filter bag chamber; a vacuum motor in the housing operably coupled to the suction passageway to draw dirty air through the floor-engaging nozzle and for passing the dirty air through the filter bag; an exhaust filter mounted in the exhaust vent; a sensor operably connected to the filter bag chamber to detect a condition representative of the flow of air through the exhaust filter element; and an exhaust filter indicator interconnected with the sensor for generating a signal when the condition reaches a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A vacuum cleaner comprising:
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a base having a floor-engaging nozzle; a handle pivotally mounted to the base having a first chamber fluidly interconnected with a second chamber; a filter bag mounted in the first chamber and fluidly interconnected with the floor-engaging nozzle by a suction passageway; an exhaust vent in the second chamber to exhaust filtered air exiting from the first chamber; an exhaust filter mounted in the exhaust vent; a vacuum motor provided in one of the housing and the base to draw air from the floor-engaging nozzle to the filter bag; a first indicator on one of the housing and the base interconnected to at least one of the suction passageway and the first chamber to generate a signal representative of the flow of air through the filter bag at a predetermined level; and a second indicator on one of the housing and the base interconnected to at least one of the first and second chambers to generate a signal representative of the flow of air through the exhaust filter at a predetermined level; whereby a clogged condition of one or both of the filter bag and exhaust filter can be detected.
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Specification