Patent US4675936A successfully refreshed from Google Patents.
US4675936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid aspirator vacuum attachment
Assignee: Individual
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Filing: 1985-11-25
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Granted: 1987-06-30
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Expires: 2005-11-25
Abstract
Abstract The use of liquid aspirators which are connected to conventional vacuum cleaners is known. In this invention the body exists of two separate body parts which are held together by a filter cartridge. The said rear body piece is provided with an extended tube in which a hose from a conventional vacuum cleaner inserts. Also said rear body piece holds a cartridge containing a filter and filter support where liquid is filtered through. The front said body piece acts as the liquid reservoir and is provided with a tube connected to the front nozzle of said body part extending along the top of said body part and protruding through the filter cartridge to the back of rear body part. The liquid aspirated by suction of vacuum cleaner is discharged to the rear of assembled unit. The filter cartridge slows air and water speed down and distributes liquid to front liquid reservoir, where at a predetermined level floats are activated to cut off air flow, thus stopping liquid flow before penetrating hose of vacuum cleaner preventing moisture damage. Front and rear said body parts may be separated easily to empty apparatus thus resetting floats enabling the apparatus to perform again.
Inventors
- 👤 Mark W. Rawlins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:40
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0004; A47L7/0023; A47L7/0028; A47L7/0038; A47L7/0042
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
157 words
A liquid aspirator comprising: walls defining a body having an interior space, attachment means on said body for attaching a vacuum to said body to draw a vacuum within the interior space, a wall within said body dividing said body into an air compartment and a water reservoir within said body, said vacuum attachment means including a tube extending into said water reservoir; walls in said body defining a front nozzle on said body, said walls also defining a traverse tube extending from said front nozzle to said air compartment within said body, said tube extending into said water reservoir having an opening into said water reservoir so that said tube may draw a vacuum on said water reservoir, said opening in said tube being positioned and said body being so shaped that there is less volume below said opening when said front nozzle is directed in a gravitationally downward direction as compared to any other direction.
Claim 2
Dependent Claim
157 words
A liquid aspirator comprising: walls defining a body having an interior space, attachment means on said body for attaching a vacuum to said body to draw a vacuum within the interior space, a wall within said body dividing said body into an air compartment and a water reservoir within said body, said vacuum attachment means including a tube extending into said water reservoir; walls in said body defining a front nozzle on said body, said walls also defining a traverse tube extending from said front nozzle to said air compartment within said body, said tube extending into said water reservoir having an opening into said water reservoir so that said tube may draw a vacuum on said water reservoir, said opening in said tube being positioned and said body being so shaped that there is less volume below said opening when said front nozzle is directed in a gravitationally downward direction as compared to any other direction.
Claim 3
Dependent Claim
45 words
The liquid aspirator of claim 1 wherein said wall separating said body includes a filter to separate particulate matter from a stream of material vacuumed through said front nozzle and said traverse tube into said air compartment before the stream passes into said water reservoir.
Claim 4
Dependent Claim
28 words
The liquid aspirator of claim 2 wherein said filter rests against a perforate plate extending adjacent said inside wall which separates said air compartment from said water reservoir.
Claim 5
Dependent Claim
58 words
The liquid aspirator of claim 3 wherein said body is formed as a rear body part and a front body part, which are separable from each other, said rear body part and said front body part being attached by means of a cartridge which fits within both of said body parts and seals to both said body parts.
Claim 6
Dependent Claim
13 words
The liquid aspirator of claim 4 wherein said tube extends through said cartridge.
Claim 7
Dependent Claim
38 words
The liquid aspirator of claim 5 wherein there is a float valve adjacent said opening in said tube so that when water rises in said reservoir adjacent said opening in said tube, said float valves closes said opening.
Claim 8
Dependent Claim
57 words
The liquid aspirator of claim 6 wherein said float valve comprises a ball which floats in water, said ball being positioned within a cage within said water reservoir adjacent said opening in said tube so that said ball is constrained to float into a position where it closes said opening when water rises to float said ball.
Claim 9
Dependent Claim
38 words
The liquid aspirator of claim 1 wherein there is a float valve adjacent said opening in said tube so that when water rises in said reservoir adjacent said opening in said tube, said float valves closes said opening.
Claim 10
Dependent Claim
57 words
The liquid aspirator of claim 8 wherein said float valve comprises a ball which floats in water, said ball being positioned within a cage within said water reservoir adjacent said opening in said tube so that said ball is constrained to float into a position where it closes said opening when water rises to float said ball.
Claim 11
Dependent Claim
132 words
A liquid aspirator comprising: walls defining a body including a wall across the interior of said body to define an air compartment within said body and a water reservoir within said body, said walls defining an exterior front nozzle on the water reservoir end of said body and a liquid traverse tube extending from said front nozzle to said air compartment within said body; vacuum attachment means including a tube extending into said water reservoir adjacent said wall dividing said body for attachment to a vacuum source for drawing a vacuum in said water reservoir; and a filter positioned between said air compartment and said water reservoir to filter particulate matter out of stream flow drawn by the vacuum into said front nozzle and through said traverse tube into said air compartment.
Claim 12
Dependent Claim
132 words
A liquid aspirator comprising: walls defining a body including a wall across the interior of said body to define an air compartment within said body and a water reservoir within said body, said walls defining an exterior front nozzle on the water reservoir end of said body and a liquid traverse tube extending from said front nozzle to said air compartment within said body; vacuum attachment means including a tube extending into said water reservoir adjacent said wall dividing said body for attachment to a vacuum source for drawing a vacuum in said water reservoir; and a filter positioned between said air compartment and said water reservoir to filter particulate matter out of stream flow drawn by the vacuum into said front nozzle and through said traverse tube into said air compartment.
Claim 13
Dependent Claim
39 words
The liquid aspirator of claim 10 wherein said body is formed of separable front and rear body portions and there is a cartridge joining and sealing to both of said body portions to separably retain together said body portions.
Claim 14
Dependent Claim
12 words
The liquid aspirator of claim 11 wherein said cartridge includes said filter.
Claim 15
Dependent Claim
36 words
The liquid aspirator of claim 12 wherein said cartridge includes a perforated retainer plate and said filter lies against said retainer plate so that said retainer plate inhibits motion of said filter toward said liquid reservoir.
Claim 16
Dependent Claim
59 words
The liquid aspirator of claim 13 wherein the opening in said vacuum tube in said water reservoir is positioned and said walls defining said water reservoir are shaped so that there is less volume in said water reservoir below said opening when said front nozzle is gravitationally below said opening than when said front nozzle is above said opening.
Claim 17
Dependent Claim
33 words
The liquid aspirator of claim 14 wherein there is a float valve positioned adjacent said opening so that when water rises to a position adjacent said opening, said float valve closes said opening.
Claim 18
Dependent Claim
52 words
The liquid aspirator of claim 15 wherein said float valve is a ball of such density as to float on water and there is a cage positioned around said ball so that when water rises within said water reservoir, said ball is constrained by said cage to float to close said opening.
Claim 19
Dependent Claim
59 words
The liquid aspirator of claim 10 wherein the opening in said vacuum tube in said water reservoir is positioned and said walls defining said water reservoir are shaped so that there is less volume in said water reservoir below said opening when said front nozzle is gravitationally below said opening than when said front nozzle is above said opening.
Claim 20
Dependent Claim
33 words
The liquid aspirator of claim 17 wherein there is a float valve positioned adjacent said opening so that when water rises to a position adjacent said opening, said float valve closes said opening.
Claim 21
Dependent Claim
52 words
The liquid aspirator of claim 18 wherein said float valve is a ball of such density as to float on water and there is a cage positioned around said ball so that when water rises within said water reservoir, said ball is constrained by said cage to float to close said opening.
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) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |