US3750222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner structure
Assignee: Panasonic Corp of North America
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Filing: 1971-09-28
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Granted: 1973-08-07
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Expires: 1991-09-28
Abstract
Abstract A vacuum cleaner structure for use with a canister-type vacuum cleaner having a tubular wand provided at one end with a nozzle. The nozzle is provided with a pair of suction inlets including a lowermost inlet and an upper inlet. Means are provided for controlling the air flow through the inlets so that air may be drawn selectively through either of the inlets. In one form, the structure includes a yoke connector adapted to vary the disposition of the upper inlet relative to the lower inlet for adjusting the nozzle for different height rug pile. The nozzle further is arranged to carry a brush adjacent the upper inlet for brushing the upper end of the rug pile during the vacuuming operation.
Inventors
- 👤 R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
For use with a tubular wand, vacuum cleaner structure comprising: a nozzle having a lowermost suction inlet, an upper suction inlet, and an outlet; and a tubular yoke having an inlet end and an outlet end axially skewed to said inlet end, said nozzle outlet being selectively connected to said yoke inlet end in any one of a plurality of different rotational positions about the axis of said inlet end, and said yoke outlet being connected to one end of the wand in any one of a plurality of different rotational positions about the axis of said wand end whereby the axially skewed inlet and outlet ends of said yoke define means for selectively raising and lowering the upper suction inlet relative to said lower suction inlet with the wand disposed at a preselected angle to the horizontal.
Claim 2
Dependent Claim
138 words
For use with a tubular wand, vacuum cleaner structure comprising: a nozzle having a lowermost suction inlet, an upper suction inlet, and an outlet; and a tubular yoke having an inlet end and an outlet end axially skewed to said inlet end, said nozzle outlet being selectively connected to said yoke inlet end in any one of a plurality of different rotational positions about the axis of said inlet end, and said yoke outlet being connected to one end of the wand in any one of a plurality of different rotational positions about the axis of said wand end whereby the axially skewed inlet and outlet ends of said yoke define means for selectively raising and lowering the upper suction inlet relative to said lower suction inlet with the wand disposed at a preselected angle to the horizontal.
Claim 3
Dependent Claim
23 words
The vacuum cleaner structure of claim 1 including means for releasably retaining said nozzle on said yoke in preselected different angularly related dispositions.
Claim 4
Dependent Claim
26 words
The vacuum cleaner structure of claim 2 wherein said retaining means defines means for releasably retaining said nozzle on said yoke in diametrically opposite angular dispositions.
Claim 5
Dependent Claim
22 words
The vacuum cleaner structure of claim 1 wherein said nozzle outlet comprises a tubular means coaxially carried on said tubular yoke inlet.
Claim 6
Dependent Claim
28 words
The vacuum cleaner structure of claim 1 further including air flow control means for selectively permitting air flow through only one of said suction inlets at a time.
Claim 7
Dependent Claim
30 words
The vacuum cleaner structure of claim 1 further including brush means disposed adjacent said upper suction inlet for brushing the upper end of carpeting tufts during a vacuum cleaning operation.
Claim 8
Dependent Claim
30 words
The vacuum cleaner structure of claim 1 further including a butterfly valve in said nozzle for selectively permitting air flow through only one of said suction inlets at a time.
Claim 9
Dependent Claim
61 words
The vacuum cleaner structure of claim 1 wherein said nozzle defines means for selectively permitting air flow through only one of said suction inlets at a time while maintaining said upper inlet at a level above said lowermost inlet and said selective flow permitting means comprises a butterfly valve in said nozzle and manually operable means for selectively positioning said valve.
Claim 10
Dependent Claim
37 words
The vacuum cleaner structure of claim 8 wherein said manually operable means for selectively positioning said valve is defined by a push member disposed externally of the nozzle and means connecting the push member to said valve.
Claim 11
Dependent Claim
48 words
The vacuum cleaner structure of claim 8 wherein said nozzle outlet is movably carried On a yoke member at one end of a tubular wand, and said manually operable means comprises means responsive to manual movement of said nozzle relative to said yoke member for effecting said positioning.
Claim 12
Dependent Claim
78 words
The vacuum cleaner structure of claim 8 wherein said nozzle outlet is movably carried on a yoke member at one end of a tubular wand, and said manually operable means comprises means responsive to manual movement of said nozzle relative to said yoke member for effecting said positioning, including a pinion connected to said valve and a rack meshed with said pinion and movable relative thereto as a result of relative movement between said yoke and said nozzle.
Claim 13
Dependent Claim
75 words
The vacuum cleaner structure of claim 8 wherein said nozzle outlet is movably carried on a yoke member at one end of a tubular wand, and said manually operable means comprises means responsive to manual movement of said nozzle relative to said yoke member for effecting said positioning, and means for limiting the relative movement between said yoke and said nozzle to positions whereat said valve is at opposite extremes of movement in said nozzle.
References Cited (Backward Citations)
US2293457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |