Spring loaded vacuum cleaner nozzle
First Claim
Patent Images
1. A vacuum cleaner comprising:
- an agitator housing including an agitator chamber opening into a suction nozzle inlet area for operative engagement with a surface to be cleaned such as carpet;
an agitator mounted within said agitator chamber;
a main body pivotally supporting said agitator housing over the surface to be cleaned with said agitator housing being pivotally connected thereto so that the height of the suction nozzle relative to the surface to be cleaned may be varied;
a nozzle height selector mounted on said main body and capable of being moved laterally thereon through a plurality of positions for varying the height of said agitator housing relative to the surface to be cleaned;
a spring member in operative engagement with said nozzle height selector and said agitator housing for biasing said agitator housing away from said main body for urging said agitator housing and said agitator mounted therein toward the surface to be cleaned or into the carpet pile.
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Accused Products
Abstract
A vacuum cleaner of the fixed or floating nozzle type wherein a spring is utilized for urging the suction nozzle into the carpet pile to maintain and improve nozzle suction over a wide range of carpet pile heights and types. Such cleaners often lose nozzle suction as the pile height of the carpet increases and forces the suction nozzle upward away from the carpet. The addition of a spring to force the suction nozzle downward restores and improves nozzle suction and thereby improves overall cleaning efficiency of the vacuum cleaner.
31 Citations
32 Claims
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1. A vacuum cleaner comprising:
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an agitator housing including an agitator chamber opening into a suction nozzle inlet area for operative engagement with a surface to be cleaned such as carpet;
an agitator mounted within said agitator chamber;
a main body pivotally supporting said agitator housing over the surface to be cleaned with said agitator housing being pivotally connected thereto so that the height of the suction nozzle relative to the surface to be cleaned may be varied;
a nozzle height selector mounted on said main body and capable of being moved laterally thereon through a plurality of positions for varying the height of said agitator housing relative to the surface to be cleaned;
a spring member in operative engagement with said nozzle height selector and said agitator housing for biasing said agitator housing away from said main body for urging said agitator housing and said agitator mounted therein toward the surface to be cleaned or into the carpet pile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A vacuum cleaner comprising:
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a vacuum cleaner foot pivotally connected to a housing about a pivot axis;
an agitator housing including an agitator chamber opening into a suction nozzle inlet area for operative engagement with a surface to be cleaned such as carpet;
an agitator mounted within said agitator chamber;
a main body pivotally supporting said agitator housing over the surface to be cleaned with said agitator housing being pivotally connected thereto about an axis which does not coincide with the pivot axis of said vacuum cleaner foot and said housing;
at least one spring member urging said agitator housing downward toward the surface to be cleaned or into the carpet pile. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A vacuum cleaner comprising:
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a bag housing;
a motor housing located on a lower end of said bag housing including a pair of trunnions located on opposing sides of said motor housing;
an agitator housing pivotally connected to said motor housing via said pair of trunnions, said agitator housing having an agitator chamber opening into a suction nozzle inlet area for operative engagement with a surface to be cleaned such as carpet;
an agitator mounted in said agitator chamber; and
at least one spring member mounted on at least one of said pair of trunnions for biasing said agitator housing away from said motor housing for urging said agitator housing and said agitator mounted in said agitator chamber toward a surface to be cleaned or into the carpet pile. - View Dependent Claims (26, 27, 28, 29)
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30. A vacuum cleaner comprising:
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a bag housing;
a motor housing located on a lower end of said bag housing including a pair of trunnions located on opposing sides of said motor housing;
an agitator housing pivotally connected to said motor housing via said trunnions, said agitator housing having an agitator chamber opening into a suction nozzle inlet area for operative engagement with a surface to be cleaned such as carpet;
an agitator mounted in said agitator chamber;
at least one spring member for biasing said agitator housing away from said motor housing for urging said agitator housing and said agitator mounted therein toward a surface to be cleaned or into the carpet pile; and
at least one loading spring arm mounted on said motor housing in operative engagement with said at least one spring member. - View Dependent Claims (31, 32)
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Specification