Patent US4477271A successfully refreshed from Google Patents.
US4477271A
Expired / Lapsed
US
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Modified nozzles for polymer finishers
Assignee: EIDP Inc
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Filing: 1983-05-09
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Granted: 1984-10-16
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Expires: 2003-05-09
Abstract
Abstract An apparatus for separating entrained matter from a flowing fluid carrying the entrained matter includes a passage diverging at an angle of from 3 to about 20 degrees in the direction of flow of the fluid and at least one helical flight having the same twist direction throughout located with the passage and tapered to conform thereto. A straight cylindrical pipe is attached to the outlet end of the passage; the pipe contains a straight baffle interlocking to aboout 90 degrees with the helical flight. Opposed edges of the flight may be spaced from or in contact with the wall of the diverging passage.
Inventors
- 👤 John M Iwasyk
- 👤 Robert D. Sauerbrunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:10
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/46; B; B01; B01D; B01D45/00; B01D45/12; B01D45/16; C08G63/00; C08G63/78; C08G63/785
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
148 words
In an apparatus for separating entrained matter from a flowing fluid carrying the entrained matter that includes a continuous impervious wall forming a passage through which the entrained matter along with the fluid passes, said passage having an inlet end and an outlet end and at least one helical flight having the same twist direction throughout located in and extending longitudinally of said passage, the improvement comprising: said passage diverging from said inlet to said outlet at an angle of from about 3 degrees to about 20 degrees, said helical flight being tapered to conform to the divergence of said passage; and a straight cylindrical pipe attached to the outlet end of said passage, said pipe having a diameter equal to the diameter of the outlet end of said passage, said pipe containing a straight baffle element interlocking with the helical flight and oriented about 90 degrees thereto.
Claim 2
Dependent Claim
148 words
In an apparatus for separating entrained matter from a flowing fluid carrying the entrained matter that includes a continuous impervious wall forming a passage through which the entrained matter along with the fluid passes, said passage having an inlet end and an outlet end and at least one helical flight having the same twist direction throughout located in and extending longitudinally of said passage, the improvement comprising: said passage diverging from said inlet to said outlet at an angle of from about 3 degrees to about 20 degrees, said helical flight being tapered to conform to the divergence of said passage; and a straight cylindrical pipe attached to the outlet end of said passage, said pipe having a diameter equal to the diameter of the outlet end of said passage, said pipe containing a straight baffle element interlocking with the helical flight and oriented about 90 degrees thereto.
Claim 3
Dependent Claim
24 words
The apparatus as defined in claim 1, said helical flight being stationary and having opposed edges in contact with the wall of said passage.
Claim 4
Dependent Claim
31 words
The apparatus as defined in claim 1, said helical flight being stationary and having opposed edges, and wherein portions of said opposed edges are spaced from the wall of said passage.
Claim 5
Dependent Claim
20 words
The apparatus as defined in claim 1, said helical flight having a total angle of twist greater than 360 degrees.
Claim 6
Dependent Claim
26 words
The apparatus as defined in claim 1, said helical flight having a pitch of from about 18 degrees to about 28 degrees per inch of length.
Claim 7
Dependent Claim
23 words
The apparatus as defined in claim 1, said passage diverging from said inlet to said outlet at an angle of about 8 degrees.
Claim 8
Dependent Claim
49 words
The apparatus as defined in claim 1, said helical flight being a plurality of stationary, contiguous helical flights each having a leading edge and a trailing edge, and wherein the trailing edge of one flight is oriented about 90 degrees to the leading edge of an adjacent helical flight.
Claim 9
Dependent Claim
31 words
The apparatus as defined in claim 7, each flight having opposed longitudinal edges and wherein said opposed longitudinal edges of each flight are in contact with the wall of said passage.
Claim 10
Dependent Claim
33 words
The apparatus as defined in claim 7, each flight having opposed longitudinal edges and wherein a portion of the opposed longitudinal edges of each flight are spaced from the wall of said passage.
Claim 11
Dependent Claim
20 words
The apparatus as defined in claim 7, each helical flight having from about 90 degrees to about 180 degrees twist.
Claim 12
Dependent Claim
147 words
In an apparatus for finishing synthetic polymer including an enclosed vessel, a vent and at least one polymer inlet in the upper portion of said vessel and a discharge outlet in the lower portion of said vessel, said inlet being defined by a continuous impervious wall forming a passage diverging toward said vessel, the improvment comprising: a plurality of stationary, contiguous, helical flights with adjacent flights having the same twist direction positioned in each of said polymer inlets, said flights being tapered to conform to the divergence of said passage, and having a total twist greater than about 360 degrees; and a straight cylindrical pipe attached to the outlet end of said passage, said pipe having a diameter equal to the diameter of the outlet end of said passage, said pipe containing a straight baffle element interlocking with the helical flight and oriented about 90 degrees thereto.
Claim 13
Dependent Claim
147 words
In an apparatus for finishing synthetic polymer including an enclosed vessel, a vent and at least one polymer inlet in the upper portion of said vessel and a discharge outlet in the lower portion of said vessel, said inlet being defined by a continuous impervious wall forming a passage diverging toward said vessel, the improvment comprising: a plurality of stationary, contiguous, helical flights with adjacent flights having the same twist direction positioned in each of said polymer inlets, said flights being tapered to conform to the divergence of said passage, and having a total twist greater than about 360 degrees; and a straight cylindrical pipe attached to the outlet end of said passage, said pipe having a diameter equal to the diameter of the outlet end of said passage, said pipe containing a straight baffle element interlocking with the helical flight and oriented about 90 degrees thereto.
Claim 14
Dependent Claim
56 words
The apparatus as defined in claim 11, each helical flight having a leading edge and a trailing edge, the same twist direction with from about 120 degrees to about 180 degrees twist, and wherein the trailing edge of one helical flight is oriented about 90 degrees relative to the leading edge of an adjacent helical flight.
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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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |