US3792729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Individual
•
Filing: 1972-07-07
•
Granted: 1974-02-19
•
Expires: 1992-07-07
Abstract
Abstract A heat exchanger includes two spaced, hollow headers each with a plurality of openings through one side. A plurality of finned tubes are connected between the headers and communicate through the openings with the insides of the headers. Interfitting parts mounted on opposite ends of the tubes are clamped together with the headers by bolts to hold sealing surfaces between the tubes and the headers together with a watertight fit, the bolts being removable to unclamp the parts with the headers to enable the tubes to be removed individually and replaced.
Inventors
- 👤 R Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/06; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
337 words
A heat exchanger including two hollow headers spaced from each other and each having a plurality of openings through one side thereof, a plurality of finned tubes extending generally parallel with each other between said headers and communicating through said openings with the insides of said headers, a plurality of generally circular sealing plates each with a central hole extending therethrough, two of said plates being mounted on each of said tubes, said two plates being telescoped over the opposite end portions of each tube with each plate being sealed permanently to the tube around the entire periphery of each hole, a set of outwardly facing sealing surfaces on said sealing plates around said holes, a second set of sealing surfaces formed around said openings and facing said firstmentioned surfaces, two spaced support channels each with inner and outer side walls extending parallel to each other and upwardly from a horizontal base, said two channels being mounted adjacent opposite ends of the tubes and extending transversely thereof with each of said outer walls abutting said sealing plates, a plurality of upwardly opening first slots formed in each of said side walls with each slot axially aligned with a corresponding slot in the other side wall and receiving the end portion of one of said tubes, two bars, each of said bars telescoped edgewise between said inner and outer side walls of said channels, each of said bars including a plurality of downwardly opening second slots receiving the end portions of said tubes between said side walls, and screw means extending through said channels and said bars to hold each of said bars downwardly within its associated channel to captivate the adjacent end portions of said tubes laterally within said first and second slots, said screw means also being connected with the adjacent headers to hold said first and second sets of sealing surfaces together with a watertight fit and being releasable to permit said tubes with their associated sealing plates to be lifted individually from the exchanger.
Claim 2
Dependent Claim
337 words
A heat exchanger including two hollow headers spaced from each other and each having a plurality of openings through one side thereof, a plurality of finned tubes extending generally parallel with each other between said headers and communicating through said openings with the insides of said headers, a plurality of generally circular sealing plates each with a central hole extending therethrough, two of said plates being mounted on each of said tubes, said two plates being telescoped over the opposite end portions of each tube with each plate being sealed permanently to the tube around the entire periphery of each hole, a set of outwardly facing sealing surfaces on said sealing plates around said holes, a second set of sealing surfaces formed around said openings and facing said firstmentioned surfaces, two spaced support channels each with inner and outer side walls extending parallel to each other and upwardly from a horizontal base, said two channels being mounted adjacent opposite ends of the tubes and extending transversely thereof with each of said outer walls abutting said sealing plates, a plurality of upwardly opening first slots formed in each of said side walls with each slot axially aligned with a corresponding slot in the other side wall and receiving the end portion of one of said tubes, two bars, each of said bars telescoped edgewise between said inner and outer side walls of said channels, each of said bars including a plurality of downwardly opening second slots receiving the end portions of said tubes between said side walls, and screw means extending through said channels and said bars to hold each of said bars downwardly within its associated channel to captivate the adjacent end portions of said tubes laterally within said first and second slots, said screw means also being connected with the adjacent headers to hold said first and second sets of sealing surfaces together with a watertight fit and being releasable to permit said tubes with their associated sealing plates to be lifted individually from the exchanger.
References Cited (Backward Citations)
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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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |