US3597903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for maintaining the suction capacity of a vacuum cleaner
Assignee: Mil-An Mfg Corp
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Filing: 1968-09-27
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Granted: 1971-08-10
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Expires: 1988-09-27
Abstract
Abstract Means for maintaining the suction capacity of a vacuum cleaner by providing inlet means into the internal compartment of the vacuum cleaner comprising a manifold conduit disposed through an inlet opening into said compartment and having at least two outlet ports in clearance position with respect to the inlet opening, the outlet ports being disposed in spaced relation to each other and also in-line and offset relation to the inlet opening, a filter receptacle being associated with each of the outlet ports, whereby the receptacle associated with the in-line port is adapted to first separate the dirt from an incoming stream of dirt-laden suction-induced air to be followed, if required, by the receptacle associated with the offset port.
Inventors
- 👤 Robert Schaaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/102; Y; Y10; Y10S; Y10S55/00; Y10S55/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
In a vacuum cleaner having inlet means, filter receptacle means including a porous wall associated with the inlet means, and a suction-producing means for producing an airstream to flow from the inlet means and through the filter receptacle means for separating dirt entrained in said airstream and depositing the same in the filter receptacle means during the passage therethrough of the airstream from the inlet means and through the porous wall of the filter receptacle means, said inlet means comprising a manifold conduit disposed through an inlet opening and having at least two outlet ports in clearance position with reSpect to the inlet opening, said outlet ports being respectively disposed in line with and in offset relation to the inlet opening, said offset outlet port being disposed between the inlet opening and said in-line outlet port, and said filter receptacle means comprising a filter receptacle associated with each of said outlet ports, wherein momentum of the dirt acquired before reaching said offset outlet port moves the dirt past said offset outlet port towards said in-line outlet port whereby said receptacle associated with said in-line outlet port is effective to separate the dirt from the airstream prior to said other outlet port.
Claim 2
Dependent Claim
201 words
In a vacuum cleaner having inlet means, filter receptacle means including a porous wall associated with the inlet means, and a suction-producing means for producing an airstream to flow from the inlet means and through the filter receptacle means for separating dirt entrained in said airstream and depositing the same in the filter receptacle means during the passage therethrough of the airstream from the inlet means and through the porous wall of the filter receptacle means, said inlet means comprising a manifold conduit disposed through an inlet opening and having at least two outlet ports in clearance position with reSpect to the inlet opening, said outlet ports being respectively disposed in line with and in offset relation to the inlet opening, said offset outlet port being disposed between the inlet opening and said in-line outlet port, and said filter receptacle means comprising a filter receptacle associated with each of said outlet ports, wherein momentum of the dirt acquired before reaching said offset outlet port moves the dirt past said offset outlet port towards said in-line outlet port whereby said receptacle associated with said in-line outlet port is effective to separate the dirt from the airstream prior to said other outlet port.
Claim 3
Dependent Claim
30 words
A vacuum cleaner according to claim 1 wherein a disposable filter bag is secured to in-line outlet port and a semipermanent filter bag is secured to said other outlet port.
Claim 4
Dependent Claim
51 words
A vacuum cleaner according to claim 2 wherein said manifold conduit further comprises a main tubular body portion, said offset outlet port being defined by a right-angle sidearm member integrally joined to said body portion, said in-line outlet port being defined by the lower open end of said tubular body portion.
Claim 5
Dependent Claim
183 words
A vacuum cleaner comprising a housing defining an internal compartment, said housing having an inlet including a manifold conduit and a suction-producing means operatively arranged in clearance positions from each other within said internal compartment, said manifold conduit having at least two outlet ports in spaced relation in the flow direction of dirt-laden air inflowing into said housing in response to the operation of said suction-producing means, and oriented in line with and in offset relation to said flow direction, said offset outlet port being disposed between said inlet and said in-line outlet port, and a separate filter bag removably operatively associated with each said outlet port located in an interposed position between said manifold conduit and said suction-producing means such that said inflowing dirt-laden air is drawn through said filter bags, wherein momentum of the dirt acquired before reaching said offset outlet port moves the dirt past said offset outlet port towards said in-line outlet port whereby said filter bag associated with said in-line outlet port is adapted to be filled prior to said filter bag associated with said offset outlet port.
Claim 6
Dependent Claim
183 words
A vacuum cleaner comprising a housing defining an internal compartment, said housing having an inlet including a manifold conduit and a suction-producing means operatively arranged in clearance positions from each other within said internal compartment, said manifold conduit having at least two outlet ports in spaced relation in the flow direction of dirt-laden air inflowing into said housing in response to the operation of said suction-producing means, and oriented in line with and in offset relation to said flow direction, said offset outlet port being disposed between said inlet and said in-line outlet port, and a separate filter bag removably operatively associated with each said outlet port located in an interposed position between said manifold conduit and said suction-producing means such that said inflowing dirt-laden air is drawn through said filter bags, wherein momentum of the dirt acquired before reaching said offset outlet port moves the dirt past said offset outlet port towards said in-line outlet port whereby said filter bag associated with said in-line outlet port is adapted to be filled prior to said filter bag associated with said offset outlet port.
Claim 7
Dependent Claim
19 words
A vacuum cleaner according to claim 4 wherein said filter bags are secured about each of said outlet ports.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |