US3924676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Clarke Chapman Group Ltd
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Filing: 1973-09-20
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Granted: 1975-12-09
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Expires: 1993-09-20
Abstract
Abstract A heat exchanger is disclosed in which tube passes are suitably secured to a member by means of abutment means provided with faces for receiving portions of the tubes for confinement thereof, wedges forming part of the abutment means serving to maintain said engagement.
Inventors
- 👤 John Charles Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:15
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/22; F16L3/223; F16L3/227; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F28F9/0132; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/506
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
In combination for securing tube passes to a member extending past several tube passes, abutment means each having two oppositely facing contoured outer faces in securing engagement with and partly surrounding respective adjacent tube passes, at least some of said abutment means each comprising two abutment portions each having one of said contoured faces, and having an inner inclined surface, the inclined surfaces of said two abutment portions lying between said adjacent tube passes and converging towards one another as they approach said member, a wedge shaped and interposed between said two abutment portions in a position to maintain said contoured faces of said abutment portions in securing relationship with said respective adjacent tube passes and to maintain said two abutment portions in engagement with said member, and a securing device engaging said wedge and said member for securing, under a predetermined load, said wedge to said member in said position, others of said abutment means comprising unitary blocks each having said two oppositely facing contoured faces, said unitary blocks being fixedly secured to said member.
Claim 2
Dependent Claim
176 words
In combination for securing tube passes to a member extending past several tube passes, abutment means each having two oppositely facing contoured outer faces in securing engagement with and partly surrounding respective adjacent tube passes, at least some of said abutment means each comprising two abutment portions each having one of said contoured faces, and having an inner inclined surface, the inclined surfaces of said two abutment portions lying between said adjacent tube passes and converging towards one another as they approach said member, a wedge shaped and interposed between said two abutment portions in a position to maintain said contoured faces of said abutment portions in securing relationship with said respective adjacent tube passes and to maintain said two abutment portions in engagement with said member, and a securing device engaging said wedge and said member for securing, under a predetermined load, said wedge to said member in said position, others of said abutment means comprising unitary blocks each having said two oppositely facing contoured faces, said unitary blocks being fixedly secured to said member.
Claim 3
Dependent Claim
27 words
The combination of claim 1, in which said securing device is a pop rivet and in which said wedge has a passage through which said rivet passes.
Claim 4
Dependent Claim
26 words
The combInation according to claim 1, wherein said inclined surfaces of said two abutment portions are in engagement with corresponding respective wedge surfaces on said wedge.
Claim 5
Dependent Claim
30 words
The combination of claim 1 in which said at least some of said abutment means and said others of said abutment means are alternated between vertically spaced apart tube passes.
Claim 6
Dependent Claim
185 words
A heat exchanger in which tube passes are secured to a member extending past several tube passes, abutment means being provided each of which has two oppositely facing contoured faces in securing engagement with and partly surrounding respective adjacent tube passes, at least some of said abutment means each comprising two abutment portions each having one of said contoured faces, and having an inclined surface, the inclined surfaces of said two abutment portions lying between said adjacent tube passes and converging towards one another as they approach said member, said inclined surfaces being in engagement with corresponding respective wedge surfaces on a wedge interposed between said two abutment portions in a position to maintain said contoured faces of said abutment portion in securing relationship with said respective adjacent tube passes and to maintain said two abutment portions in engagement with said member, and a securing device for securing said wedge to said member, in said position, under a predetermined load others of said abutment means comprising unitary blocks each having said two oppositely facing contoured faces, said unitary blocks being fixedly secured to said member.
Claim 7
Dependent Claim
185 words
A heat exchanger in which tube passes are secured to a member extending past several tube passes, abutment means being provided each of which has two oppositely facing contoured faces in securing engagement with and partly surrounding respective adjacent tube passes, at least some of said abutment means each comprising two abutment portions each having one of said contoured faces, and having an inclined surface, the inclined surfaces of said two abutment portions lying between said adjacent tube passes and converging towards one another as they approach said member, said inclined surfaces being in engagement with corresponding respective wedge surfaces on a wedge interposed between said two abutment portions in a position to maintain said contoured faces of said abutment portion in securing relationship with said respective adjacent tube passes and to maintain said two abutment portions in engagement with said member, and a securing device for securing said wedge to said member, in said position, under a predetermined load others of said abutment means comprising unitary blocks each having said two oppositely facing contoured faces, said unitary blocks being fixedly secured to said member.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |