US4517705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction device for cleaning textile floor coverings
Assignee: DURPO AG INDUSTRIESTR 6 CH-8590 ROMANSHORN SWITZERLAND A CORP
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Filing: 1983-06-02
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Granted: 1985-05-21
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Expires: 2003-06-02
Abstract
Abstract A suction device for cleaning textile floor coverings comprising a base member, a central housing, and a cover. A brushing device is detachably mounted closely adjacent to the base member. The base member has a tubular stub receiving a flexibly supported suction air connector sleeve of the brushing device. The dust chamber is located in the central housing and a dust air canal located within the housing of the suction device connects the tubular stub with the dust chamber. The suction blower and at least a portion of the electrical and/or electronic components are located in the base member resulting in a low center of gravity for the unit. The closely adjacent detachable mounting of the brushing device to the suction device avoids long vacuum hose and long electrical lines connecting the suction device to the brushing device.
Inventors
- 👤 Nikolaus Hug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:19
CPC Classifications
A; A47; A47L; A47L9/00; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
167 words
In a suction device for cleaning textile floor coverings comprising a housing enclosing a dust chamber for receiving a dust filter bag, a cover detachably mounted on said housing in a sealed air-tight manner, a cleaning device for floor coverings having a flexibly supported suction air connector sleeve, said housing surrounding a tubular stub for receiving said suction air connector sleeve, electrical components disposed in said housing, a dust air canal connecting said tubular stub and said dust chamber, the improvement comprising: a base member forming part of said housing wherein said base member is in fluid communication with said dust chamber and houses at least a portion of said electrical components and at least a portion of said dust air canal; support member means for detachably and supportably connecting said base member to said cleaning device; and said base member includes said tubular stub detachably receiving said suction air connector sleeve of said cleaning device; whereby said cleaning device is easily removable from said base member.
Claim 2
Dependent Claim
167 words
In a suction device for cleaning textile floor coverings comprising a housing enclosing a dust chamber for receiving a dust filter bag, a cover detachably mounted on said housing in a sealed air-tight manner, a cleaning device for floor coverings having a flexibly supported suction air connector sleeve, said housing surrounding a tubular stub for receiving said suction air connector sleeve, electrical components disposed in said housing, a dust air canal connecting said tubular stub and said dust chamber, the improvement comprising: a base member forming part of said housing wherein said base member is in fluid communication with said dust chamber and houses at least a portion of said electrical components and at least a portion of said dust air canal; support member means for detachably and supportably connecting said base member to said cleaning device; and said base member includes said tubular stub detachably receiving said suction air connector sleeve of said cleaning device; whereby said cleaning device is easily removable from said base member.
Claim 3
Dependent Claim
22 words
A suction device as recited in claim 1 wherein said housing includes a central housing member detachably connected to said base member.
Claim 4
Dependent Claim
19 words
A suction device as recited in claim 2 wherein said dust chamber is enclosed in said central housing member.
Claim 5
Dependent Claim
20 words
A suction device as recited in claim 3 wherein an air discharge chamber is located in said central housing member.
Claim 6
Dependent Claim
35 words
A suction device as recited in claim 4 wherein a partion wall extends substantially the entire longitudinal height of said central housing member and is positioned between said dust chamber and said air discharge chamber.
Claim 7
Dependent Claim
55 words
A suction device as recited in claim 4 wherein the width of said air discharge chamber is substantially narrower than the width of said dust chamber and wherein said dust air canal is a tubular canal and said width of said air discharge chamber is about twice the diameter of said tubular dust air canal.
Claim 8
Dependent Claim
19 words
A suction device as recited in claim 4 wherein said air discharge chamber terminates in a screened discharge opening.
Claim 9
Dependent Claim
54 words
A suction device as recited in claim 4 wherein said cover is detachably mounted on said central housing member; said dust air canal extends upward through said air discharge chamber and into said cover; and said dust air canal within said cover curves downward and is connected in fluid communication with said dust chamber.
Claim 10
Dependent Claim
71 words
A suction device as recited in claim 3 wherein said cover is detachably mounted on said central housing member; a deflection chamber having a first end and a second end is located in said cover; and wherein the first end of said deflection chamber is connected in fluid communication with said dust air canal and said second end of said deflection chamber is connected in fluid communication with said dust chamber.
Claim 11
Dependent Claim
21 words
A suction device as recited in claim 9 wherein said dust chamber is sealed from said cover by a termination plate.
Claim 12
Dependent Claim
63 words
A suction device as recited in claim 9 wherein a circular rim is mounted on said dust chamber at the top end of said dust chamber near said cover; a termination plate rests on said rim for sealing said dust chamber from said cover; and said second end of said deflection chamber penetrates said termination plate for fluid communication with said dust chamber.
Claim 13
Dependent Claim
50 words
A suction device as recited in claim 3 wherein said cover is detachably mounted on said central housing member and a guide handle is joined to the rear wall of said central housing member and extends along the length of the wall of said central housing member and the cover.
Claim 14
Dependent Claim
39 words
A suction device as recited in claim 12 wherein said guide handle includes at least a first handle part located above said cover and a second handle part which is joined to the lower half of said central housing.
Claim 15
Dependent Claim
36 words
A suction device as recited in claim 12 wherein said guide handle has mounted thereon at least two spaced apart hooks arranged a selected distance from one another for the winding up of a power cable.
Claim 16
Dependent Claim
43 words
A suction device as recited in claim 3 wherein said cover is detachably mounted to said central housing member, and said base member, said central housing member and said cover have approximately the same outside contour whereby aligned outer housing walls are formed.
Claim 17
Dependent Claim
49 words
A suction device as recited in claim 2 wherein said central housing member has a bottom wall including a circular plug rim extending downward from said bottom wall wherein said circular plug rim plugs into said base member whereby said central housing member is joined to said base member.
Claim 18
Dependent Claim
33 words
A suction device as recited in claim 16 wherein said central housing bottom wall includes an annular extension member positioned within said circular plug rim which extends downward for receiving a suction blower.
Claim 19
Dependent Claim
44 words
A suction device as recited in claim 17 wherein said suction blower is located in said base member and said suction blower is secured in the axial direction by the interposition of an elastic seal between said annular extension member and said suction blower.
Claim 20
Dependent Claim
27 words
A suction device as recited in claim 18 wherein the axis of said annular extension member is approximately aligned with the longitudinal axis of said dust chamber.
Claim 21
Dependent Claim
32 words
A suction device as recited in claim 18 wherein said base member includes mounting means supporting said suction blower at about the height of the center of gravity of the suction blower.
Claim 22
Dependent Claim
28 words
A suction device as recited in claim 20 wherein elastic support means joined to the side walls of said base member hold said mounting means secure against rotation.
Claim 23
Dependent Claim
28 words
A suction device as recited in claim 1 wherein said support member means has the form of a strap detachably connecting said cleaning device to said base member.
Claim 24
Dependent Claim
41 words
A suction device as recited in claim 22 wherein said base member has a bottom wall and said strap has a first leg and a second leg wherein the first leg of said strap is fixedly fastened to said bottom wall.
Claim 25
Dependent Claim
34 words
A suction device as recited in claim 23 wherein the cleaning device has a detent member for receiving said strap and the second end of said strap is detachably joined to said detent member.
Claim 26
Dependent Claim
35 words
A suction device as recited in claim 24 wherein said base member has an open receiving space and at least a portion of the first leg of said strap is located in said receiving space.
Claim 27
Dependent Claim
26 words
A suction device as recited in claim 1 wherein said base member has a receiving space formed by recesses of adjacent walls of said base member.
Claim 28
Dependent Claim
21 words
A suction device as recited in claim 26 wherein said receiving space extends substantially over the entire height of said base.
Claim 29
Dependent Claim
28 words
A suction device as recited in claim 27 wherein said receiving space is tapered in approximately a V-fashion toward the central housing member as viewed from the side.
Claim 30
Dependent Claim
17 words
A suction device as recited in claim 28 wherein said receiving space has a rectangular rear outline.
Claim 31
Dependent Claim
47 words
A suction device as recited in claim 27 wherein said receiving space has a front boundry wall which joins the side wall of the base member approximately at right angles and a lateral wall which joins the rear wall of the base member approximately at right angles.
Claim 32
Dependent Claim
36 words
A suction device as recited in claim 30 wherein a switching lever is disposed within said receiving space and said switching lever protrudes through said forward boundry wall toward the rear wall of said base member.
Claim 33
Dependent Claim
19 words
A suction device as recited in claim 31 wherein said switching lever has the form of a foot pedal.
Claim 34
Dependent Claim
25 words
A suction device as recited in claim 32 wherein said foot pedal is located within the contours of the outer housing walls of said base.
Claim 35
Dependent Claim
25 words
A suction device as recited in claim 31 wherein means are provided within said base for functionally connecting said switching lever to said electrical components.
Claim 36
Dependent Claim
50 words
A suction device as recited in claim 1 wherein said base member has a first plug outlet for receiving a plug electrically connected to a main power line cable and a second plug outlet for receiving a plug electrically connected to a power line cable connected to said cleaning device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |