Patent US4586566A successfully refreshed from Google Patents.
US4586566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for joining the tubes of a heat exchanger core with a connecting box particularly for evaporators
Assignee: Mahle Behr GmbH and Co KG
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Filing: 1982-08-17
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Granted: 1986-05-06
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Expires: 2002-08-17
Abstract
Abstract An arrangement is disclosed for joining the tubes of a heat exchanger core to a connecting box, wherein the tubes are fastened to the connecting box and sealed, said tubes being secured to the connecting box by means of a friction joint and at least one space being provided for each tube surrounding the end of the tube; each said space comprising a cavity bounded by the connecting box and the tube or a corresponding recess, and being filled and sealed with adhesive material.
Inventors
- 👤 Josef Kern
- 👤 Helmut Bardong
- 👤 Bohumil Humpolik
- 👤 Karl-Heinz Staffa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0224; F28F9/0202; F28F9/04; F28F9/16; F28F9/162; F28F2275/00; F28F2275/02; F28F2275/025; F28F2275/08; F28F2275/085; F28F2275/14; F28F2275/16; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/492; Y10S165/905; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T29/00; Y10T29/49; Y10T29/49396
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
An arrangement sealingly joining tubes of a heat exchanger core to a connecting box, wherein said connecting box comprises a bottom with cylindrical openings through which the ends of the tubes extend, and the tubes are spread in said openings and joined to said bottom in said openings in a press fit, wherein at least one space is provided inside the connecting box surrounding each tube, each said space comprising a cavity bounded by the connecting box bottom and the tube and being filled with adhesive material, and wherein said bottom is joined to said connecting box in a joint area and has a plurality of projections annularly surrounding each tube end, said projections engaging recesses in the connecting box to form a plurality of tongue and groove joints in the joint area between the connecting box and the bottom.
Claim 2
Dependent Claim
140 words
An arrangement sealingly joining tubes of a heat exchanger core to a connecting box, wherein said connecting box comprises a bottom with cylindrical openings through which the ends of the tubes extend, and the tubes are spread in said openings and joined to said bottom in said openings in a press fit, wherein at least one space is provided inside the connecting box surrounding each tube, each said space comprising a cavity bounded by the connecting box bottom and the tube and being filled with adhesive material, and wherein said bottom is joined to said connecting box in a joint area and has a plurality of projections annularly surrounding each tube end, said projections engaging recesses in the connecting box to form a plurality of tongue and groove joints in the joint area between the connecting box and the bottom.
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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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |