Patent US4902242A successfully refreshed from Google Patents.
Patent US4172496A successfully refreshed from Google Patents.
US4172496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger assembly
Assignee: McCord Corp
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Filing: 1977-07-25
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Granted: 1979-10-30
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Expires: 1997-07-25
Abstract
Abstract A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through the fins for defining a fluid circuit, the assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at the tube-to-tube joint wherein one of the tubes includes an end having an annular, outwardly extending shoulder followed by an inwardly tapered flared portion for receiving the outwardly tapered portion of the other portion and the other of the tubes including an end having an outwardly flared portion for receiving the outwardly tapered portion of the other tube end and an inwardly directed flange clinched over the shoulder of the other tube end to produce a solderless mechanical connection between the two tubes.
Inventors
- 👤 William Melnyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:26
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/16; F16L13/166; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/047; F28D1/0475; F28F; F28F9/00; F28F9/02; F28F9/0246; F28F9/0256; F28F9/26; F28F9/262; F28F2275/00; F28F2275/12; F28F2275/125
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through said fins for defining a fluid circuit, said assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at said tube-to-tube joint wherein one of said tubes includes an end having an annular outwardly extending shoulder followed by an inwardly tapered portion and said other of said tubes includes an end having an outwardly flared portion for receiving said inwardly tapered portion of said other tube end and an inwardly directed flange clinched over said shoulder of said other tube end, said inwardly directed flange forcibly wedging said tapered portion tightly into said flange portion to lock said tubes together.
Claim 2
Dependent Claim
141 words
A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through said fins for defining a fluid circuit, said assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at said tube-to-tube joint wherein one of said tubes includes an end having an annular outwardly extending shoulder followed by an inwardly tapered portion and said other of said tubes includes an end having an outwardly flared portion for receiving said inwardly tapered portion of said other tube end and an inwardly directed flange clinched over said shoulder of said other tube end, said inwardly directed flange forcibly wedging said tapered portion tightly into said flange portion to lock said tubes together.
Claim 3
Dependent Claim
20 words
An assembly as set forth in claim 1 including sealing means between said tube ends for sealing said tube-to-tube joint.
Claim 4
Dependent Claim
30 words
An assembly as set forth in claim 2 wherein said sealing means includes an annular sealing member and said inwardly tapered end includes a seat for receiving said sealing member.
Claim 5
Dependent Claim
36 words
An assembly as set forth in claim 2 wherein said sealing means includes a layer of sealing material between the exterior surface of said inwardly tapered end and the interior surface of said outwardly flared end.
Claim 6
Dependent Claim
44 words
An assembly as set forth in claim 1 wherein said tube including said inwardly tapered end portion includes at least one outwardly extending projection located immediately adjacent said shoulder which is surrounded by said inwardly directed flange to prevent relative rotation between said tubes.
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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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |