US4064052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionator modules having lip seals
Assignee: ATI Ladish Co Inc
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Filing: 1976-06-28
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Granted: 1977-12-20
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Expires: 1996-06-28
Abstract
Abstract A module, utilizing a spirally wound membrane envelope, and adapted to be fitted into a containment tube of a fractionator, has a lip seal between the module and the containment tube, there being small apertures in the lip of the seal arranged and directed so as to allow a small controlled flow to continually bypass the module and thus prevent the product from becoming stagnant behind the seal.
Inventors
- 👤 Robert D. Zimmerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
B; B01; B01D; B01D65/00; B01D65/003; B01D61/00; B01D61/02; B01D61/10; B01D63/00; B01D63/10; B01D2313/00; B01D2313/08; B01D2313/083
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
In a fractionator having a containment tube, a cylindrical fractionating module within said containment tube through which portions of a product to be fractionated are adapted to pass axially under pressure, an annular space between the module and tube, and an annular lip seal for sealing said annular space, the improvement comprising small aperture means through the lip of said lip seal to allow a small controlled flow to continually bypass the module through said annular space and prevent stagnation of the product behind said seal.
Claim 2
Dependent Claim
86 words
In a fractionator having a containment tube, a cylindrical fractionating module within said containment tube through which portions of a product to be fractionated are adapted to pass axially under pressure, an annular space between the module and tube, and an annular lip seal for sealing said annular space, the improvement comprising small aperture means through the lip of said lip seal to allow a small controlled flow to continually bypass the module through said annular space and prevent stagnation of the product behind said seal.
Claim 3
Dependent Claim
18 words
A fractionator as claimed in claim 1 in which the aperture means comprises several small peripherally spaced holes.
Claim 4
Dependent Claim
21 words
A fractionator as claimed in claim 1 in which the aperture means comprises three small holes which are equally spaced peripherally.
Claim 5
Dependent Claim
23 words
A fractionator as claimed in claim 2 in which the holes pass through seal material of substantial thickness to provide elongated bypass ducts.
Claim 6
Dependent Claim
40 words
A fractionator as claimed in claim 4 in which the axes of the bypass ducts are at an angle with respect to the axis of the module to create a spiral flow for product which passes through the bypass ducts.
Claim 7
Dependent Claim
21 words
A fractionator as claimed in claim 4 in which the axes of the passageways are angled outwardly away from the module.
Claim 8
Dependent Claim
25 words
A fractionator as claimed in claim 1 in which the aperture means is at the junction between the base of the seal and the lip.
Claim 9
Dependent Claim
18 words
A fractionator as claimed in claim 1 in which the fractionating module is a spirally wound membrane envelope.
Claim 10
Dependent Claim
34 words
A fractionator as claimed in claim 7 in which the aperture means comprises holes which provide elongated bypass ducts through the material at the junction between the base of the seal and the lip.
Claim 11
Dependent Claim
45 words
A fractionator as claimed in claim 9 in which the lip seal provides an annular pocket which is V-shaped in cross-section providing a V which is open toward the direction of flow and in which the bypass ducts are near the apex of said V.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |