US3898065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lint collector
Assignee: Norman Dryer Co Inc
•
Filing: 1973-10-09
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Granted: 1975-08-05
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Expires: 1993-10-09
Abstract
Abstract A lint separator, for use with a fabric dryer, having a housing, a horizontal filtering screen dividing the housing into an upper and a lower portion, an air inlet into one end of the housing below the screen, an air outlet opposite the inlet above the screen, a lint outlet also opposite the inlet but below the screen, and valves in each of said outlets for the discharge of filtered air or for the discharge of collected lint.
Inventors
- 👤 Robert B Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/20; D06F58/22; B; B01; B01D; B01D46/00; B01D46/10; B01D46/42; B01D46/48
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A COLLECTOR FOR SEPARATING ENTRAINED PARTICULATE MATTER FROM A STREAM OF AIR DICHARGING FROM A FABRIC DRYER AND THE LIKE, COMPRISING MEANS DEFINING A CHAMBER, A SUBSTANTIALLY HORIZONTALLY DISPOSED FILTER SCREEN WITHIN SAID CHAMBER DIVIDING SAID CHAMBER INTO AN UPPER PART AND A LOWER APART, MEANS DEFINING AN AIR INLET INTO ONE END OF SAID CHAMBER BELOW SAID SCREEN ADAPTED TO RECEIVE SAID STREAM, SAID MEANS BEING THE ONLY INLET TO SAID CHAMBER, MEANS DEFINING AN AIR OUTLET FROM SAID CHAMBER ABOVE SAID SCREEN, MEANS DEFINING AN OUTLET BELOW SAID SCREEN AND GENERALLY OPPOSITE SAID INLET FOR ACCUMULATED PARTICULATE MATTER, AND MEANS FOR SELECTIVELY OPENING AND CLOSING SAID OUTLETS, SAID STREAM SERVING TO BLOW ACCUMULATED PARTICULATE MATTER FROM SAID CHAMBER BELOW SAID SCREEN WHEN SAID OUTLET ABOVE SAID SCREEN IS CLOSED AND SAID PARTICULATE MATTER OUTLET IS OPEN.
Claim 2
Dependent Claim
138 words
A COLLECTOR FOR SEPARATING ENTRAINED PARTICULATE MATTER FROM A STREAM OF AIR DICHARGING FROM A FABRIC DRYER AND THE LIKE, COMPRISING MEANS DEFINING A CHAMBER, A SUBSTANTIALLY HORIZONTALLY DISPOSED FILTER SCREEN WITHIN SAID CHAMBER DIVIDING SAID CHAMBER INTO AN UPPER PART AND A LOWER APART, MEANS DEFINING AN AIR INLET INTO ONE END OF SAID CHAMBER BELOW SAID SCREEN ADAPTED TO RECEIVE SAID STREAM, SAID MEANS BEING THE ONLY INLET TO SAID CHAMBER, MEANS DEFINING AN AIR OUTLET FROM SAID CHAMBER ABOVE SAID SCREEN, MEANS DEFINING AN OUTLET BELOW SAID SCREEN AND GENERALLY OPPOSITE SAID INLET FOR ACCUMULATED PARTICULATE MATTER, AND MEANS FOR SELECTIVELY OPENING AND CLOSING SAID OUTLETS, SAID STREAM SERVING TO BLOW ACCUMULATED PARTICULATE MATTER FROM SAID CHAMBER BELOW SAID SCREEN WHEN SAID OUTLET ABOVE SAID SCREEN IS CLOSED AND SAID PARTICULATE MATTER OUTLET IS OPEN.
Claim 3
Dependent Claim
71 words
The combination as claimed in claim 1 including additionally a baffle within said chamber below said screen and having an up-stream end adjacent said inlet and sloping downwardly toward said particulate matter outlet, said baffle being shaped to avoid narrowly the sides of said chamber and to intercept at least a major portion of the air entering said inlet, thereby to distribute said air over a major portion of said screen.
Claim 4
Dependent Claim
17 words
The combination as claimed in claim 2 wherein said baffle is movable from said downwardly sloping position.
Claim 5
Dependent Claim
41 words
The combination as claimed in claim 3 wherein said baffle is pivoted intermediate its length and is movable to a position where a portion of said inlet air is directed at a shallow angle against the under side of said screen.
Claim 6
Dependent Claim
52 words
The combination as claimed in claim 4 wherein said baffle has an extension on the inlet edge thereof bent backwardly over said baffle at a sharply acute angle to the plane of said baffle, said extension directing said inlet air portion against said screen when said baffle is parallel to said screen.
Claim 7
Dependent Claim
56 words
The combination as claimed in claim 1 including additionally flow directing means within said chamber for optionally distributing inlet air over a substantial area of said screen for filtration and for directing a portion of said inlet air generally parallel to the floor of said chamber to sweep collected particulate matter out said particulate matter outlet.
Claim 8
Dependent Claim
49 words
The combination as claimed in claim 6, said flow directing means including additionally means for diverting another portion of inlet air at a shallow angle against said screen to dislodge particulate matter from said screen when said flow directing means is arrangEd for air flow parallel to said floor.
Claim 9
Dependent Claim
14 words
The combination as claimed in claim 1 wherein said filter screen is generally planar.
References Cited (Backward Citations)
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US3486309A
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |