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US 3,936,905 AGranted
Vacuum cleaner suction tool
AssigneeWhirlpool Corporation
InventorsBruce E. Stewart, Keith E. Carr
Life of this patent
Estimating the term…
Abstract
A suction tool for use in a vacuum cleaner including a nozzle defining a suction inlet including a mid-portion and an edge portion and structure for selective blocking of air flow through the mid-portion to provide selectively high suction force at the edge portion.
Claims13
A vacuum cleaner suction tool comprising:
- a nozzle defining a suction inlet opening including a midportion and an edge portion, a suction outlet opening, and a flow passage for conducting dirt laden air drawn through said suction inlet opening mid-portion and edge portion to said outlet opening;
- and blocking means for selectively substantially blocking air flow through said suction inlet opening mid-portion to provide high suction force at said suction inlet edge portion, said blocking means being incapable of restricting air flow through said suction inlet edge portion.
A vacuum cleaner suction tool comprising:
- a nozzle defining an upwardly facing top wall, a suction inlet opening adjacent said wall including a mid-portion and an edge portion, a suction outlet opening, and a flow passage for conducting dirt laden air drawn through said suction inlet opening mid-portion and edge portion to said outlet opening;
- and blocking means for slectively blocking air flow through said suction inlet opening mid-portion to provide selectively high suction force at said suction inlet edge portion or causing said mid-portion to be substantially unrestricted, said blocking means including valve means for selectively blocking air flow including an adjusting control member defining a manipulating portion overlying said top wall, said valve means being incapable of restricting air flow through said suction inlet edge portion.
A vacuum cleaner suction tool comprising:
- a nozzle defining an upwardly facing top wall, a suction inlet opening adjacent said wall including a mid-portion and an edge portion a suction outlet opening, and a flow passage for conducting dirt laden air drawn through said suction inlet opening mid-portion and edge portion to said outlet opening;
- and blocking means for selectively blocking air flow through said suction inlet opening midportion to provide selectively high suction force at said suction inlet edge portion or causing said mid-portion to be substantially unrestricted, said blocking means including valve means for selectively blocking air flow including an adjusting control member defining a manipulating portion overlying said top wall, said blocking means including a mounting portion and a valve integral with said mounting portion, said mounting portion further defining a brush carrying portion.
A vacuum cleaner suction tool comprising:
- a nozzle defining an upwardly facing top wall, a suction inlet opening adjacent said wall including a mid-portion and an edge portion, a suction outlet opening, and a flow passage for conducting dirt laden air drawn through said suction inlet opening mid-portion and edge portion to said outlet opening;
- and blocking means for selectively blocking air flow through said suction inlet opening midportion to provide selectively high suction force at said suction inlet edge portion or causing said mid-portion to be substantially unrestricted, said blocking means including valve means for selectively blocking air flow including an adjusting control member defining a manipulating portion overlying said top wall, said blocking means including a mounting protion and a valve integral with said mounting portion, said mounting portion further defining a brush carrying portion disposed rearwardly of said valve.
Dependencies are inferred from the claim text.