Patent US3870489A successfully refreshed from Google Patents.
US3870489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter systems for debris collecting apparatus
Assignee: Myers-Sherman Co
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Filing: 1972-10-13
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Granted: 1975-03-11
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Expires: 1992-10-13
Abstract
Abstract A mobile debris collecting device including a vehicle mounted debris box with an entrance for air-carried debris and a clean air flow exit, the box having an internal division and including, in separate compartments, a bag house filtering unit and a cyclone filtering unit, the units being usable separately from one another.
Inventors
- 👤 Roland E Shaddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:10
CPC Classifications
B; B04; B04C; B04C9/00; B01; B01D; B01D46/00; B01D46/02; B01D46/06; B01D50/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
301 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a debris-laden air inlet to said box; a clean air outlet from said box; means exterior to said box inducing an air flow from said inlet to said outlet; at least first and second separate and independent air filtrations systems positioned within said box, said air filtration systems being of different types; means directing the air flow through said box from the inlet to the outlet through only one of said air filtration systems at a time the means directing being selectively actuatable to direct the flow through one of said first and second separate air filtration systems; the said debris collection box is divided into compartments and one of the said air filtration systems is disposed in each of said compartments; a cyclone air filtration system is received in one compartment and a bag house air filtration system is received in another compartment, the compartments being separated by a wall, means in the wall comprising a passageway from the one compartment to the another compartment, said passageway being closable to close off the compartment containing the bag house air filtration system from the compartment containing the cyclone air filtration system, the air flow through the box from the inlet to the outlet being only through the one compartment when the said passageways are closed; and additional means are provided in said one compartment to close an inlet to the cyclone filtration system whereby air flow through the said debris box from the inlet to the outlet is to the said one compartment thence through the passageways to the said another compartment when the said passageways are open and the said means closing the opening to the cyclone filtration system are closed.
Claim 2
Dependent Claim
301 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a debris-laden air inlet to said box; a clean air outlet from said box; means exterior to said box inducing an air flow from said inlet to said outlet; at least first and second separate and independent air filtrations systems positioned within said box, said air filtration systems being of different types; means directing the air flow through said box from the inlet to the outlet through only one of said air filtration systems at a time the means directing being selectively actuatable to direct the flow through one of said first and second separate air filtration systems; the said debris collection box is divided into compartments and one of the said air filtration systems is disposed in each of said compartments; a cyclone air filtration system is received in one compartment and a bag house air filtration system is received in another compartment, the compartments being separated by a wall, means in the wall comprising a passageway from the one compartment to the another compartment, said passageway being closable to close off the compartment containing the bag house air filtration system from the compartment containing the cyclone air filtration system, the air flow through the box from the inlet to the outlet being only through the one compartment when the said passageways are closed; and additional means are provided in said one compartment to close an inlet to the cyclone filtration system whereby air flow through the said debris box from the inlet to the outlet is to the said one compartment thence through the passageways to the said another compartment when the said passageways are open and the said means closing the opening to the cyclone filtration system are closed.
Claim 3
Dependent Claim
90 words
The apparatus of claim 1 wherein the bag house air filtration system is suspended above the floor of the said another compartment and means are provided to accumulate debris removed from the air flow by the said bag house air filtration system adjacent to said floor and additional means are provided to continuously move the said debris collected adjacent the said floor from the said another compartment to the said one compartment remote from the bag house whereby the accumulated debris are removable from the area of the bag house.
Claim 4
Dependent Claim
214 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a vertical dividing wall mounted in said box and dividing it into first and second compartments; a debris-laden air inlet to said first compartment; a first air filtration mounted in said first compartment and formed with a filter passage such that air can pass up through said first air filtration system from said first compartment; an air outlet extending to the top of said first air filtration system; means exterior to said box for inducing air flow from said air outlet; a first closure means mounted on the top of said first filtration system to disconnect it from said air outlet; a second separate and distinct air filtration system of a type different from said first air filtration system mounted in said second compartment and its outlet communicating with said air outlet; a second closure means mounted in said vertical dividing wall such that when said second closure means is open and said first closure means is closed, the debris-laden air passes exclusively through said second air filtration system, and when said second closure means is closed and said first closure means is opened, the debris-laden air passes exclusively through said first air filtration system.
Claim 5
Dependent Claim
214 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a vertical dividing wall mounted in said box and dividing it into first and second compartments; a debris-laden air inlet to said first compartment; a first air filtration mounted in said first compartment and formed with a filter passage such that air can pass up through said first air filtration system from said first compartment; an air outlet extending to the top of said first air filtration system; means exterior to said box for inducing air flow from said air outlet; a first closure means mounted on the top of said first filtration system to disconnect it from said air outlet; a second separate and distinct air filtration system of a type different from said first air filtration system mounted in said second compartment and its outlet communicating with said air outlet; a second closure means mounted in said vertical dividing wall such that when said second closure means is open and said first closure means is closed, the debris-laden air passes exclusively through said second air filtration system, and when said second closure means is closed and said first closure means is opened, the debris-laden air passes exclusively through said first air filtration system.
Claim 6
Dependent Claim
214 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a vertical dividing wall mounted in said box and dividing it into first and second compartments; a debris-laden air inlet to said first compartment; a first air filtration mounted in said first compartment and formed with a filter passage such that air can pass up through said first air filtration system from said first compartment; an air outlet extending to the top of said first air filtration system; means exterior to said box for inducing air flow from said air outlet; a first closure means mounted on the top of said first filtration system to disconnect it from said air outlet; a second separate and distinct air filtration system of a type different from said first air filtration system mounted in said second compartment and its outlet communicating with said air outlet; a second closure means mounted in said vertical dividing wall such that when said second closure means is open and said first closure means is closed, the debris-laden air passes exclusively through said second air filtration system, and when said second closure means is closed and said first closure means is opened, the debris-laden air passes exclusively through said first air filtration system.
Claim 7
Dependent Claim
214 words
A mobile debris collection apparatus comprising: a vehicle having a frame; a debris collection box mounted on said frame; a vertical dividing wall mounted in said box and dividing it into first and second compartments; a debris-laden air inlet to said first compartment; a first air filtration mounted in said first compartment and formed with a filter passage such that air can pass up through said first air filtration system from said first compartment; an air outlet extending to the top of said first air filtration system; means exterior to said box for inducing air flow from said air outlet; a first closure means mounted on the top of said first filtration system to disconnect it from said air outlet; a second separate and distinct air filtration system of a type different from said first air filtration system mounted in said second compartment and its outlet communicating with said air outlet; a second closure means mounted in said vertical dividing wall such that when said second closure means is open and said first closure means is closed, the debris-laden air passes exclusively through said second air filtration system, and when said second closure means is closed and said first closure means is opened, the debris-laden air passes exclusively through said first air filtration system.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |