Suction port device for a vacuum cleaner
First Claim
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1. A suction port device for a vacuum cleaner comprising:
- a suction port body having a suction pressure opening and dust accepting opening means spaced from said suction pressure opening for accepting dust and dirt from a surface being cleaned in response to suction pressure applied at the suction pressure opening,and suction adjusting shield member means disposed along at least one peripheral edge of said dust accepting opening means for forming an air gap with the surface being cleaned,wherein said shield member means are disposed and configured such as to allow the size of said air gap to vary as a function of the air flow rate through said air gap.
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Abstract
A suction port device comprising a shield member extending along at least one of the peripheral edges of an opening formed in a suction port body, so that the suction force of the vacuum cleaner can be made substantially uniform in intensity over the entire length of the suction port body.
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Citations
18 Claims
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1. A suction port device for a vacuum cleaner comprising:
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a suction port body having a suction pressure opening and dust accepting opening means spaced from said suction pressure opening for accepting dust and dirt from a surface being cleaned in response to suction pressure applied at the suction pressure opening, and suction adjusting shield member means disposed along at least one peripheral edge of said dust accepting opening means for forming an air gap with the surface being cleaned, wherein said shield member means are disposed and configured such as to allow the size of said air gap to vary as a function of the air flow rate through said air gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A suction port device for a vacuum cleaner comprising a suction port body having a suction joint for connecting said suction port body to a device for applying suction pressure, a carpet sled mounted on the underside of said suction port body and provided with an opening for introducing dust and dirt sucked from a surface being cleaned into said suction joint and with suction passageways in the form of grooves disposed oppositely lengthwise of said opening, means for maintaining a gap (β
- ) at a predetermined level between the carpet sled and the surface being cleaned, and a suction adjusting member for forming a gap (α
) of a smaller size than that of said gap (β
) along the edges of the opening and suction passageways and between the suction adjusting member and the surface being cleaned, said gap (α
) formed between the surface being cleaned and the suction adjusting member being adapted to be reduced in size as the air flow rate through said suction port means is decreased. - View Dependent Claims (14, 15, 16, 17)
- ) at a predetermined level between the carpet sled and the surface being cleaned, and a suction adjusting member for forming a gap (α
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18. A suction port device for a vacuum cleaner comprising a suction port body having a suction joint for connecting said suction port body to a device for applying suction pressure, a carpet sled mounted on the underside of said suction port body and provided with an opening for introducing dust and dirt sucked from a surface being cleaned into said suction joint and with suction passageway in the form of grooves disposed oppositely lengthwise of said opening, brush means provided rearwardly on the underside of said suction port body, a plurality of rollers provided forwardly on the underside of said carpet sled for balancedly cooperating with said brush means so as to maintain a gap (β
- ) at a predetermined level between the underside of said carpet sled and the surface being cleaned, and a suction adjusting member made of a flexible material for forming a gap (α
) of a smaller size than that of said gap (β
) along the edges of the opening and suction passageways and between the suction adjusting member and the surface being cleaned, said suction adjusting member being constructed such that said gap (α
) is reduced in size as the air flow rate through said suction port body is decreased.
- ) at a predetermined level between the underside of said carpet sled and the surface being cleaned, and a suction adjusting member made of a flexible material for forming a gap (α
Specification