US4934017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular vacuum cleaning system
Assignee: Rug Doctor LP
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Filing: 1987-10-09
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Granted: 1990-06-19
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Expires: 2007-10-09
Abstract
Abstract A multiple function, modular vacuum cleaning system is described having a vacuum head which is releasably mounted on a waste recovery tank to form a first, portable wet/dry vacuum cleaning machine. The wet/dry vacuum cleaning machine in turn can be mounted on a cleaning solution tank to provide a second portable machine having wet extraction as well as wet and dry vacuum capabilities.
Inventors
- 👤 Willie D. Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:45
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4013; A47L11/4016; A47L11/34; A47L11/408; A47L11/4083; A47L5/00; A47L5/12; A47L5/22; A47L5/225; A47L5/36; A47L5/365
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
380 words
Components or pods for selectively forming a two-pod vacuum machine and a three-pod wet extraction vacuum machine, comprising: a first pod comprising: a recovery tank, having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means mounted in the bottom of said recovery tank for moving the first pod along a floor surface; a second pod comprising: a vacuum head, including a vacuum blower means having a vacuum inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means mounted on the bottom of said third pod for moving said third pod along a floor surface; and the first, second and third pods being adapted for selectively and releasably mounting together the second pod on the first pod and the first pod on the third pod to provide a vacuum cleaning machine selected from the first and second pods and all three pods; the vacuum blower means including a vacuum blower having an air outlet, an air inlet adopted for connection to the recovery tank and a cooling fan mounted on the vacuum blower having an upper air inlet and a lower air exhaust; and wherein the vacuum head further comprises: (a) cooling air inlet and outlet openings in the top of the head and at least one vacuum air flow exhaust outlet in the bottom thereof; (b) an enclosure surrounding the vacuum blower for directing discharge air to the vacuum air flow exhaust opening and (c) a second enclosure connecting the cooling air inlet of the vacuum head and the fan cooling air inlet and separating the vacuum head cooling air inlet and the fan cooling air inlet from the vacuum head cooling air outlet, to thereby define separate vacuum air flow and cooling air flow paths within the vacuum head.
Claim 2
Dependent Claim
380 words
Components or pods for selectively forming a two-pod vacuum machine and a three-pod wet extraction vacuum machine, comprising: a first pod comprising: a recovery tank, having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means mounted in the bottom of said recovery tank for moving the first pod along a floor surface; a second pod comprising: a vacuum head, including a vacuum blower means having a vacuum inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means mounted on the bottom of said third pod for moving said third pod along a floor surface; and the first, second and third pods being adapted for selectively and releasably mounting together the second pod on the first pod and the first pod on the third pod to provide a vacuum cleaning machine selected from the first and second pods and all three pods; the vacuum blower means including a vacuum blower having an air outlet, an air inlet adopted for connection to the recovery tank and a cooling fan mounted on the vacuum blower having an upper air inlet and a lower air exhaust; and wherein the vacuum head further comprises: (a) cooling air inlet and outlet openings in the top of the head and at least one vacuum air flow exhaust outlet in the bottom thereof; (b) an enclosure surrounding the vacuum blower for directing discharge air to the vacuum air flow exhaust opening and (c) a second enclosure connecting the cooling air inlet of the vacuum head and the fan cooling air inlet and separating the vacuum head cooling air inlet and the fan cooling air inlet from the vacuum head cooling air outlet, to thereby define separate vacuum air flow and cooling air flow paths within the vacuum head.
Claim 3
Dependent Claim
199 words
A three-pod vacuum machine, comprising: a first pod comprising: a recovery tank, having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means for permitting movement of the recovery tank along a floor; a second pod comprising: a vacuum head, including vacuum blower means having a vacuum inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means such as wheels for permitting movement of the tank; and the first, second and third pods being adapted for cooperatively and releasably mounting the second pod on the first pod and the first pod on the third pod to provide an arrangement selected from the first and second pods and all three pods.
Claim 4
Dependent Claim
199 words
A three-pod vacuum machine, comprising: a first pod comprising: a recovery tank, having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means for permitting movement of the recovery tank along a floor; a second pod comprising: a vacuum head, including vacuum blower means having a vacuum inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means such as wheels for permitting movement of the tank; and the first, second and third pods being adapted for cooperatively and releasably mounting the second pod on the first pod and the first pod on the third pod to provide an arrangement selected from the first and second pods and all three pods.
Claim 5
Dependent Claim
330 words
A three-pod vacuum machine, comprising: a first pod comprising: a recovery tank; having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means for permitting movement of the recovery tank along a floor; a second pod comprising: a vacuum head, including a vacuum blower means including a peripheral discharge blower having an air inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a cooling fan mounted on the vacuum blower and having an upper air inlet and a lower air exhaust; the vacuum head further comprising: (a) cooling air inlet and outlet openings in the top of the head and at least one vacuum air flow exhaust outlet in the bottom thereof; (b) an enclosure surrounding the vacuum blower for directing peripheral discharge air to the vacuum air flow exhaust opening; and (c) a second enclosure connecting the cooling air inlet of the vacuum head and the fan cooling air inlet and separating the vacuum head cooling air inlet and the fan cooling air inlet from the vacuum head cooling air outlet, to thereby define separate vacuum air flow and cooling air flow paths within the vacuum head; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means such as wheels for permitting movement of the tank; the first, second and third pods being adapted for cooperatively and releasably mounting the second pod on the first pod and the first pod on the third pod to provide an arrangement selected from the first and second pods and all three pods.
Claim 6
Dependent Claim
330 words
A three-pod vacuum machine, comprising: a first pod comprising: a recovery tank; having an orifice and including valve means for emptying the tank; a vacuum inlet connector for directing debris and liquid into the recovery tank during the application of vacuum to the recovery tank; float means mounted within the orifice for selectively closing the orifice in response to the level of liquid within the recovery tank; filter means mounted to the orifice over the float means; and means for permitting movement of the recovery tank along a floor; a second pod comprising: a vacuum head, including a vacuum blower means including a peripheral discharge blower having an air inlet adapted for connection to the orifice of the recovery tank to apply vacuum suction to the recovery tank; a cooling fan mounted on the vacuum blower and having an upper air inlet and a lower air exhaust; the vacuum head further comprising: (a) cooling air inlet and outlet openings in the top of the head and at least one vacuum air flow exhaust outlet in the bottom thereof; (b) an enclosure surrounding the vacuum blower for directing peripheral discharge air to the vacuum air flow exhaust opening; and (c) a second enclosure connecting the cooling air inlet of the vacuum head and the fan cooling air inlet and separating the vacuum head cooling air inlet and the fan cooling air inlet from the vacuum head cooling air outlet, to thereby define separate vacuum air flow and cooling air flow paths within the vacuum head; a third pod comprising: a cleaning solution application tank, including a pump and a pump outlet for dispensing cleaning solution under pressure, and means such as wheels for permitting movement of the tank; the first, second and third pods being adapted for cooperatively and releasably mounting the second pod on the first pod and the first pod on the third pod to provide an arrangement selected from the first and second pods and all three pods.
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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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |