US3692064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow resistor
Assignee: Babcock International Ltd
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Filing: 1969-12-12
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Granted: 1972-09-19
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Expires: 1989-12-12
Abstract
Abstract A resistor for mounting into the tube of a heat exchanger to control the flow of fluid therethrough. The resistor is of unitary construction and includes a stem having laterally extending projections in the form of disk-like members spaced longitudinally of the tube. A flow path is defined through the resistor by providing an opening through each of the disk-like members with the openings of adjacent members being offset circumferentially. An alternate embodiment has the projections in the form of arcuate partitions laterally extending to one side of the stem with adjacent partitions being on opposite sides of the stem and including openings through the stem therebetween.
Inventors
- 👤 Gunther Ernst Hohnerlein
- 👤 Gunther Max Meinhart
- 👤 Peter Hildebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:35
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/62; F22B37/70; F22B37/74; F28; F28F; F28F13/00; F28F13/06; F28F13/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
In a fluid flow circuit comprising a plurality of fluid flow tubes arranged in spaced parallel flow relationship, means for mounting a flow resistor in at least one of said tubes, the flow resistor being of unitary construction and having a portion thereof inserted within said tube, the resistor including a plurality of flow restrictors equiaxially spaced longitudinally of said tube, one of said restrictors being adjacent the resistor receiving end of said tube and including a shoulder portion for substantially closing said tube, a stem interconnecting the restrictors, the stem being generally coaxial with said tube, the restrictors being generally disposed normal to the stem and having a surface slidably engaged with the inner surface of said tube, longitudinally adjacent restrictors including the restrictor having the shoulder portion cooperating with said inner surface to form chambers therebetween and means defining a flow path through said one of said restrictors and between said chambers for fluid communication between the chambers and through said tube.
Claim 2
Dependent Claim
164 words
In a fluid flow circuit comprising a plurality of fluid flow tubes arranged in spaced parallel flow relationship, means for mounting a flow resistor in at least one of said tubes, the flow resistor being of unitary construction and having a portion thereof inserted within said tube, the resistor including a plurality of flow restrictors equiaxially spaced longitudinally of said tube, one of said restrictors being adjacent the resistor receiving end of said tube and including a shoulder portion for substantially closing said tube, a stem interconnecting the restrictors, the stem being generally coaxial with said tube, the restrictors being generally disposed normal to the stem and having a surface slidably engaged with the inner surface of said tube, longitudinally adjacent restrictors including the restrictor having the shoulder portion cooperating with said inner surface to form chambers therebetween and means defining a flow path through said one of said restrictors and between said chambers for fluid communication between the chambers and through said tube.
Claim 3
Dependent Claim
46 words
A fluid flow circuit according to claim 1 wherein each of the restrictors is in the form of a cylindrical disc, each of discs being generally coaxial with the stem and having a radial cross-sectional area substantially equal to that of the bore of said tube.
Claim 4
Dependent Claim
31 words
A fluid flow circuit according to claim 2 wherein the means defining flow paths includes an opening formed through each of the restrictors, the opening extending substantially parallel to said stem.
Claim 5
Dependent Claim
29 words
A fluid flow circuit according to claim 3 wherein the openings of successive restrictors are offset circumferentially of said tube to form a tortuous flow path through said resistor.
Claim 6
Dependent Claim
23 words
A fluid flow circuit according to claim 3 wherein the opening is in the form of a circumferentially notched groove of rectangular cross-section.
Claim 7
Dependent Claim
56 words
In a fluid flow circuit according to claim 1 wherein said stem is of generally rectangular axial cross-section, the stem extending diametrically across the tube''s bore and cooperating therewith to form a pair of axial passageways, said restrictors being alternately disposed between the passagewAys to form alternating successive chambers therein, said successive chambers overlapping one another.
Claim 8
Dependent Claim
73 words
In a fluid flow circuit according to claim 6 including each of the endmost restrictors having at least one portion thereof formed of a cylindrical disc, said cylindrical disc having a radial cross-sectional area substantially equal to that of the bore of said tube and each of the intermediate restrictors being formed of a partial disc, said partial disc having a radial cross-sectional area substantially equal to that of one of said passageways.
Claim 9
Dependent Claim
55 words
In a fluid flow circuit according to claim 7 wherein the means defining flow paths includes an opening extending substantially radially through the stem between each of said overlapping chambers, and an opening formed through the cylindrical disc portion of each of said endmost restrictors, said last named opening extending substantially parallel to the stem.
Claim 10
Dependent Claim
28 words
In a fluid flow circuit according to claim 1 wherein said resistor includes an end-threaded stub projecting from said shoulder portion in a direction axial of the stem.
Claim 11
Dependent Claim
48 words
In a fluid flow circuit according to claim 8 wherein the means for mounting said flow resistor includes a perforated plate member, said stub passing through one of the perforations, a locknut engaging the threaded-end of the stub to rigidly connect the flow resistor to said plate member.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |