US3907671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating device
Assignee: Individual
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Filing: 1974-12-18
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Granted: 1975-09-23
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Expires: 1994-12-18
Abstract
Abstract Relatively long and therefore valuable textile fibers are separated from an air-borne mixture comprised of such fibers and of smaller particulate matter, such as shorter textile fibers, dust and the like, by a compact but highly efficient separating device of the centrifugal type. The device comprises a cylindrical housing having a diameter to length ratio of preferably approximately 1 to 1.1. Inlet and outlet ducts communicating with the housing are so positioned and proportioned that most of the long textile fibers of the mixture introduced into the housing are discharged at high velocity therefrom through a first outlet duct extending tangentially from the housing, while the remainder of such mixture is discharged through a second outlet duct extending coaxially from the housing. An edge portion of the mouth of the first oulet duct is provided with a relatively large radius of curvature so as to prevent fiber accumulations within the housing.
Inventors
- 👤 Jr Joseph F Baigas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:57
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/14; B01; B01D; B01D45/00; B01D45/12; B04C5/08; B04C5/081
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
395 words
A DEVICE FOR SEPARATING RELATIVELY LONG TEXTILE FIBERS FROM AN AIR-BORNE MIXTURE CONSISTING OF SAD FIBERS AND SMALLER PARTICULATE MATTERS SUCH AS LINT, DUST AND THE LIKE, COMPRISING: A GENERALLY CYLINDRICAL HOUSING HAVING FIRST AND SECOND END WALLS AT OPPOSITE ENDS THEREOF, AND HAVING A DIAMETER TO LENGTH RATIO WITHIN THE RANGE OF APPROXIMATELY 1 TO 1.1 - 2.0, INLET MEANS INCLUDING AN INLET DUCT EXTENDING SUBSTANTIALLY TANGENTIALLYY TO AND OPENING SUBSTANTIALLYY TANGENTIALLY THROUGH THE CURVED SIDE WALL OF SAID HOUSING CLOSELYY ADJACENT SAID FIRST OF SAID END WALLS THEREOF FOR INTRODUCING SAID MIXTURE INTO SAID HOUSING FOR PASSAGE IN A PREDETERMINED ROTATIONAL DIRECTION ALONG A SPIRALING PATH OF TRAVEL EXTENDING ABOUT THE AXIS OF SAID HOUSING AND TOWARD SAID SECOND OF SAID END WALLS THEREOF, FIRST OUTLET MEANS COMMUNICATING WITH SAID HOUSING FOR DURING OPERATION OF SAID DEVICE CONDUCTING A MAJOR PORTION OF SAID LONG TEXTILE FIBERS OF SID MIXTURE AND A MINOR PORTION ONLY OF SAID SMALLER PARTICULATE MATTER AND OF THE ENTRAINING AIR OF SAID MIXTURE FROM SAID HOUSING AT A VELOCITYY APPROXIMATELY EQUAL TO SAID VELOCITYY AT WHICH SAID MIXTURE IS INTRODUCED INTO SAID HOUSING THROUGH SAID INLET MEANS, SID FIRST OUTLET MEANS INCLUDING A FIRST OUTLET DUCT MEMBER EXTENDING SUBSTANTIALLY TANGENTIALLYY FROM SAID HOUSING IN SAID PREDETERMINED ROTATIONAL DIRECTION AND OPENING SUBSTANTIALLYY TANGENTIALLY THROUGH SAID CURVED SIDE WALL OF SAID HOUSING CLOSELY ADJACENT SAID SECOND OF SAID END WALLS THEREOF, THE MOUTH OF SAID FIST OUTLET DUCT HAVING AN EDGE PORTION EXTENDING GENERALLY PARALLEL TO SAID AXIS OF SAID HOUSING, AND SAID EDGE PORTION OF SAID DUCT MOUTH HAVING A RADIUS OF CURVATURE OF AT LEAST APPROXIMATELY 2 INCHES, AND SECOND OUTLET MEANS COMMUNICTING WITH SAID HOUSING FOR DURING OPERATION OF SID DEVICE CONDUCTING THEREFROM A MINOR PORTION ONLY OF SAID LONG TEXTILE FIBERS AND A MAJOR PORTION OF SAID SMALLER PARTICULATE MATTER AND OF TE ENTRAINING AIR OF SAID MIXTURE AT A VELOCITY EQUAL TO APPROXIMATELY ONE-HALF OF SAID VELOCITY AT WHICH SAID MIXTURE IS INTRODUCED INTO SAID HOUSING THROUGH SAID INLET MEANS, SAID SECOND OUTLET MEANS INCLUDING A GENERALLY CYLINDRICAL DUCT MEMBER PROJECTING COAXIALLY OF AND INTO SAID HOUSING THROUGH ONE OF SAID END WALLS THEREOF, SAID CYLINDIRCAL DUCT MEMBER HAVING AN OPEN TERMINAL END DISPOSED WITHIN SAID HOUSING AND SPACED IN THE LENGTH DIRECTION OF SAID HOUSING FROM BOTH SAID INLET MEANS AND SAID FIRST OUTLET MEANS.
Claim 2
Independent Claim
395 words
A DEVICE FOR SEPARATING RELATIVELY LONG TEXTILE FIBERS FROM AN AIR-BORNE MIXTURE CONSISTING OF SAD FIBERS AND SMALLER PARTICULATE MATTERS SUCH AS LINT, DUST AND THE LIKE, COMPRISING: A GENERALLY CYLINDRICAL HOUSING HAVING FIRST AND SECOND END WALLS AT OPPOSITE ENDS THEREOF, AND HAVING A DIAMETER TO LENGTH RATIO WITHIN THE RANGE OF APPROXIMATELY 1 TO 1.1 - 2.0, INLET MEANS INCLUDING AN INLET DUCT EXTENDING SUBSTANTIALLY TANGENTIALLYY TO AND OPENING SUBSTANTIALLYY TANGENTIALLY THROUGH THE CURVED SIDE WALL OF SAID HOUSING CLOSELYY ADJACENT SAID FIRST OF SAID END WALLS THEREOF FOR INTRODUCING SAID MIXTURE INTO SAID HOUSING FOR PASSAGE IN A PREDETERMINED ROTATIONAL DIRECTION ALONG A SPIRALING PATH OF TRAVEL EXTENDING ABOUT THE AXIS OF SAID HOUSING AND TOWARD SAID SECOND OF SAID END WALLS THEREOF, FIRST OUTLET MEANS COMMUNICATING WITH SAID HOUSING FOR DURING OPERATION OF SAID DEVICE CONDUCTING A MAJOR PORTION OF SAID LONG TEXTILE FIBERS OF SID MIXTURE AND A MINOR PORTION ONLY OF SAID SMALLER PARTICULATE MATTER AND OF THE ENTRAINING AIR OF SAID MIXTURE FROM SAID HOUSING AT A VELOCITYY APPROXIMATELY EQUAL TO SAID VELOCITYY AT WHICH SAID MIXTURE IS INTRODUCED INTO SAID HOUSING THROUGH SAID INLET MEANS, SID FIRST OUTLET MEANS INCLUDING A FIRST OUTLET DUCT MEMBER EXTENDING SUBSTANTIALLY TANGENTIALLYY FROM SAID HOUSING IN SAID PREDETERMINED ROTATIONAL DIRECTION AND OPENING SUBSTANTIALLYY TANGENTIALLY THROUGH SAID CURVED SIDE WALL OF SAID HOUSING CLOSELY ADJACENT SAID SECOND OF SAID END WALLS THEREOF, THE MOUTH OF SAID FIST OUTLET DUCT HAVING AN EDGE PORTION EXTENDING GENERALLY PARALLEL TO SAID AXIS OF SAID HOUSING, AND SAID EDGE PORTION OF SAID DUCT MOUTH HAVING A RADIUS OF CURVATURE OF AT LEAST APPROXIMATELY 2 INCHES, AND SECOND OUTLET MEANS COMMUNICTING WITH SAID HOUSING FOR DURING OPERATION OF SID DEVICE CONDUCTING THEREFROM A MINOR PORTION ONLY OF SAID LONG TEXTILE FIBERS AND A MAJOR PORTION OF SAID SMALLER PARTICULATE MATTER AND OF TE ENTRAINING AIR OF SAID MIXTURE AT A VELOCITY EQUAL TO APPROXIMATELY ONE-HALF OF SAID VELOCITY AT WHICH SAID MIXTURE IS INTRODUCED INTO SAID HOUSING THROUGH SAID INLET MEANS, SAID SECOND OUTLET MEANS INCLUDING A GENERALLY CYLINDRICAL DUCT MEMBER PROJECTING COAXIALLY OF AND INTO SAID HOUSING THROUGH ONE OF SAID END WALLS THEREOF, SAID CYLINDIRCAL DUCT MEMBER HAVING AN OPEN TERMINAL END DISPOSED WITHIN SAID HOUSING AND SPACED IN THE LENGTH DIRECTION OF SAID HOUSING FROM BOTH SAID INLET MEANS AND SAID FIRST OUTLET MEANS.
Claim 3
Dependent Claim
52 words
A device as in claim 1, wherein said cylindrical duct member projects through said first of said end walls of said housing, and the ratio of the cross-sectional area of said cylindrical duct member to the cross-sectional area of said housing is within the approximate range of 1 to 4 - 6.
Claim 4
Dependent Claim
48 words
A device as in claim 2, wherein the ratios of the cross-sectional areas of said inlet duct and of said first outlet duct to the cross-sectional area of said housing are respectively within the ranges of approximately 1 to 7 - 9 and 1 to 60 - 80.
Claim 5
Dependent Claim
64 words
A device as in claim 1, wherein the ratio of the diameter to the length of said housing is approximately 1 to 1.1, and wherein the displacement between said inlet duct and said first outlet duct about the circumference of said housing and in the direction of said spiraling path of travel of said mixture is within the range of approximately 180 - 360*.
Claim 6
Dependent Claim
61 words
A device as in claim 4, wherein said inlet duct and said first outlet duct are each of generally rectangular cross-sectional shape and are contiGuous with respective adjacent ones of said first and second end walls of said housing, and wherein the ratio of the cross-sectional area of said first outlet duct to said inlet duct is approximately 1 to 9.
Claim 7
Dependent Claim
41 words
A device as in claim 5, wherein said inlet duct and said first outlet duct are spaced in the length direction of said housing from each other and from said mouth of said cylindrical outlet duct of said second outlet means.
Claim 8
Dependent Claim
35 words
A device as in claim 5, wherein said first outlet duct is of substantially square cross-section shape, and said edge portion of said duct mouth has a radius of curvature of approximately 2 1/2 inches.
Claim 9
Dependent Claim
30 words
A device as in claim 7, wherein the ratio of the cross-sectional area of said first outlet duct to the cross-sectional area of said housing is approximately 1 to 70.
Claim 10
Dependent Claim
29 words
A device as in claim 8, wherein the ratio of the cross-sectional area of said inlet duct to the cross-sectional area of said housing is approximately 1 to 8.
Claim 11
Dependent Claim
30 words
A device as in claim 9, wherein the ratio of the cross-sectional area of said second outlet duct to the cross-sectional area of said housing is approximately 1 to 5.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |