Title: Vacuum cleaner suction tool

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Stewart, Bruce E. (St. Paul, MN, US)
Carr, Keith E. (Stevensville, MI, US)

Application Number: 475971
Filing Date: 1974-06-03
Publication_date: 1976-02-10
Assignee: Whirlpool Corporation (Benton Harbor, MI)
Primary Class(es): 15/416 15/354
Other Classes:
US Patent Ref:

1782882	Nov, 1930	Rippey	15/416.
2296462	Sep, 1946	Betts	15/416.
2348861	May, 1944	Smellie	15/416.
2953808	Sep, 1960	Carmack	15/416.
3205528	Sep, 1965	Fromknecht	15/416.
3253294	May, 1966	Waters	15/323.
3262147	Jul, 1966	Waters et al.	15/354.
3633239	Jan, 1972	Meyerhoefer	15/339.
3683448	Aug, 1972	Lagerstrom et al.	15/354.

Other Refs:
Primary Examiner: Hornsby, Harvey C.
Assistant Examiner: Moore, C. K.
Attorney: Wegner, Stellman, McCord, Wiles & Wood