US4127146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy loss device
Assignee: IMI Critical Engineering LLC
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Filing: 1977-02-22
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Granted: 1978-11-28
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Expires: 1997-02-22
Abstract
Abstract A more compact high energy loss device is provided having a series of uniquely formed multiturn labyrinth assemblies which reduce the pressure of a fluid flowing therethrough. The inlet of the labyrinth assemblies is formed according to a substantially circular configuration to have a predetermined inlet area while the outlet is formed according to a substantially scalloped configuration to provide an outlet area greater than the inlet area. The scalloped configuration of the outlet yields an outlet area which is also greater than if the outlet were of circular configuration. The scalloped outlet configuration also makes the labyrinth assembly less susceptible to circumferential thermal stresses resulting from high temperature fluids passing through the device producing high temperature inlet conditions and low temperature outlet conditions.
Inventors
- 👤 Richard E. Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:06
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16K; F16K47/00; F16K47/08; F16L55/027; F16L55/02781; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
A high energy loss fluid flow controlling device comprising: a plurality of members joined together into a rigid structure to define a series of high energy loss paths for fluid flow, said plurality of members including series of disks having abutting surfaces and forming high energy loss paths therebetween for fluid flow therealong wherein one of the disks of said series of disks has a series of labyrinth paths formed therein to subject the fluid to a plurality of turns within the plane of said disk between the inlet and the outlet of the disk; inlet means centrally formed in said members along a first configuration to define a predetermined inlet area for conducting fluid to the series of paths formed by said plurality of members; and outlet means formed along a scalloped surface substantially concentric with said inlet means and extending the entire height of said rigid structure to provide a series of openings for exhausting fluid from the high energy loss path of said rigid structure.
Claim 2
Dependent Claim
168 words
A high energy loss fluid flow controlling device comprising: a plurality of members joined together into a rigid structure to define a series of high energy loss paths for fluid flow, said plurality of members including series of disks having abutting surfaces and forming high energy loss paths therebetween for fluid flow therealong wherein one of the disks of said series of disks has a series of labyrinth paths formed therein to subject the fluid to a plurality of turns within the plane of said disk between the inlet and the outlet of the disk; inlet means centrally formed in said members along a first configuration to define a predetermined inlet area for conducting fluid to the series of paths formed by said plurality of members; and outlet means formed along a scalloped surface substantially concentric with said inlet means and extending the entire height of said rigid structure to provide a series of openings for exhausting fluid from the high energy loss path of said rigid structure.
Claim 3
Dependent Claim
45 words
A high energy loss device as set forth in claim 1 wherein said inlet means includes a substantially circular bore extending through said plurality of members to provide a series of openings for fluid flow into the high energy loss path of said rigid structure.
Claim 4
Dependent Claim
36 words
A high energy loss device as set forth in claim 1 including a plug member movable within the bore of said rigid structure to vary the inlet area exposed to fluid flow through said rigid structure.
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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |