US3885932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust filtration system
Assignee: Super Products Corp
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Filing: 1974-01-10
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Granted: 1975-05-27
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Expires: 1994-01-10
Abstract
Abstract A vacuum cleaning or loading device of the type including a means for filtering airborne fine particulate material also includes a back-up filter system for protecting the vacuum exhauster or blower. A by-pass system may preferably be used with the back-up filtration system to protect the primary filter media when the cleaner or loader is being used for collection of liquids. The device may be self-propelled or stationary and may be used for various collecting, loading, transportation or cleaning jobs.
Inventors
- 👤 Jr Lionel G Moore
- 👤 Thomas P Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/70; B01D46/71; B65; B65F; B65F3/00; B65F3/02; B65F3/0206; B65F3/0209
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
259 words
A VACUUM LOADING OR CLEANING DEVICE COMPRISING: A MATERIAL RECEIVING CHAMBER, SAID CHAMBER INCLUDING INLET MEANS AND OUTLET MEANS, VACUUM PUMP MEANS CONNECTED TO SAID CHAMBER OUTLET MEANS FOR CREATING A VACUUM IN SAID CHAMBER AND FOR DRAWING A HIGH VELOCITY AIR STREAM FROM SAID CHAMBER INLET MEANS THROUGH SAID CHAMBER TO SAID CHAMBER OUTLET MEANS, FILTER MEANS INTERPOSED BETWEEN SAID CHAMBER AND SAID PUMP MEANS FOR FILTERING FINE PARTICULATE MATERIAL FROM THE AIR STREAM PASSING FROM SAID CHAMBER TO SAID PUMP MEANS, SAID FILTER MEANS COMPRISING: A HOUSING HAVING TWO INLET MEANS COUPLED WITH SAID CHAMBER OUTLED MEANS AND A HOUSING OUTLET MEANS COUPLED TO SAID VACUUM PUMP MEANS, AIR STREAM DIRECTING MEANS WITHIN SAID HOUSING DEFINING TWO AIR STREAM FLOW PATHS THROUGH SAID HOUSING, ONE OF SAID FLOW PATHS CONNECTING ONE OF SAID HOUSING INLET MEANS TO SAID HOUSING OUTLET MEANS AND THE OTHER OF SAID FLOW PATHS CONNECTING THE OTHER OF SAID HOUSING INLET MEANS TO SAID HOUSING OUTLET MEANS, FILTERS IN SAID HOUSING FOR FILTERING FINE PARTICULATE MATERIAL FROM THE AIR STREAM PASSING THROUGH SAID HOUSING, SAID FILTERS COMPRISING A FIRST AND A SECOND PORTION, SAID FIRST PORTION AND SAID SECOND PORTION OF SAID FILTERS BEING ARRANGED IN SAID HOUSING FOR FILTERING IN SERIES THE AIR STREAM PASSING THROUGH SAID FIRST FLOW PATH, SAID SECOND FLOW PATH BYPASSING SAID FIRST PORTION OF SAID FILTERS BUT INCLUDING SAID SECOND PORTION OF SAID FILTERS MEANS FOR SELECTIVELY CONTROLLING THE AIR FLOW FROM SAID CHAMBER OUTLET MEANS TO SAID HOUSING OUTLET MEANS THROUGH ONE OF SAID FLOW PATHS.
Claim 2
Dependent Claim
259 words
A VACUUM LOADING OR CLEANING DEVICE COMPRISING: A MATERIAL RECEIVING CHAMBER, SAID CHAMBER INCLUDING INLET MEANS AND OUTLET MEANS, VACUUM PUMP MEANS CONNECTED TO SAID CHAMBER OUTLET MEANS FOR CREATING A VACUUM IN SAID CHAMBER AND FOR DRAWING A HIGH VELOCITY AIR STREAM FROM SAID CHAMBER INLET MEANS THROUGH SAID CHAMBER TO SAID CHAMBER OUTLET MEANS, FILTER MEANS INTERPOSED BETWEEN SAID CHAMBER AND SAID PUMP MEANS FOR FILTERING FINE PARTICULATE MATERIAL FROM THE AIR STREAM PASSING FROM SAID CHAMBER TO SAID PUMP MEANS, SAID FILTER MEANS COMPRISING: A HOUSING HAVING TWO INLET MEANS COUPLED WITH SAID CHAMBER OUTLED MEANS AND A HOUSING OUTLET MEANS COUPLED TO SAID VACUUM PUMP MEANS, AIR STREAM DIRECTING MEANS WITHIN SAID HOUSING DEFINING TWO AIR STREAM FLOW PATHS THROUGH SAID HOUSING, ONE OF SAID FLOW PATHS CONNECTING ONE OF SAID HOUSING INLET MEANS TO SAID HOUSING OUTLET MEANS AND THE OTHER OF SAID FLOW PATHS CONNECTING THE OTHER OF SAID HOUSING INLET MEANS TO SAID HOUSING OUTLET MEANS, FILTERS IN SAID HOUSING FOR FILTERING FINE PARTICULATE MATERIAL FROM THE AIR STREAM PASSING THROUGH SAID HOUSING, SAID FILTERS COMPRISING A FIRST AND A SECOND PORTION, SAID FIRST PORTION AND SAID SECOND PORTION OF SAID FILTERS BEING ARRANGED IN SAID HOUSING FOR FILTERING IN SERIES THE AIR STREAM PASSING THROUGH SAID FIRST FLOW PATH, SAID SECOND FLOW PATH BYPASSING SAID FIRST PORTION OF SAID FILTERS BUT INCLUDING SAID SECOND PORTION OF SAID FILTERS MEANS FOR SELECTIVELY CONTROLLING THE AIR FLOW FROM SAID CHAMBER OUTLET MEANS TO SAID HOUSING OUTLET MEANS THROUGH ONE OF SAID FLOW PATHS.
Claim 3
Dependent Claim
65 words
The invention set forth in claim 1 wherein said chamber outlet means comprise first and second outlets, said first outlet being connected to said one housing inlet means and said second outlet being connected to the other of said housing inlet means, said chamber outlets being selectively closable whereby air passing through said chamber may leave said chamber through only one of said chamber outlets.
Claim 4
Dependent Claim
104 words
The invention set forth in claim 2 further including first and second duct means coupling the interior of said chamber to said first and second chamber outlets respectively, one end of said first duct means being coupled to said first chamber outlet and the other end of said first duct means being open to the upper portion of said chamber interior, and one end of said second duct means being coupled to said second chamber outlet while the other end of said second duct means is open to said chamber interior at a location therein below said other end of said first duct means.
Claim 5
Dependent Claim
60 words
The invention set forth in claim 3 wherein said second duct means is selectively closeable by a float valve means disposed at said other end of said second duct means, whereby said second duct means is closed to the passage of air if liquid is being collected in said chamber and said liquid reaches a predetermined height in said chamber.
Claim 6
Dependent Claim
51 words
The invention set forth in claim 4 wherein said filters comprise tubular fabric filter bags suspended within said housing so that the air stream passing through said housing flows from the exterior of said bags to the interior of said bags and fine particulate material accumulates on the exterior surface thereof.
Claim 7
Dependent Claim
166 words
The invention set forth in claim 2 wherein said air stream directing means define: a first vertical section of said housing, said first section being divided into first and second vertical passageways, the first one of said passageways connected to said one inlet means and the second one of said passageways connected to said other inlet means, a second vertical section adjacent said first section and containing said first portion of said filters, said second vertical section being connected to said first passageway, a third vertical section adjacent said second vertical section and defining a third passageway leading from the upper portion of said second vertical section to the lower portion of, a fourth vertical section adjacent said third vertical section and containing said second portion of said filters said fourth vertical section connected to said third passageway and said housing outlet, and a first horizontal passageway passing through and beneath said second vertical section and connected to said second passageway and said fourth vertical section.
Claim 8
Dependent Claim
80 words
The invention set forth in claim 6 wherein said filters comprises tubular fabric filter bags suspended within said second and fourth vertical sections so that the air stream passing through said housing flows from the exterior of said bags to the interior of said bags and fine particulate material accumulates on the exterior surface thereof, and wherein the averaGe porosity of the bags in said fourth vertical section exceeds the average porosity of the bags in said second vertical section.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |