US3850236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Peerless of America Inc
•
Filing: 1973-03-26
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Granted: 1974-11-26
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Expires: 1993-03-26
Abstract
Abstract A heat exchanger embodying an elongated tubular member with integral elongated fins having elongated bases extending transversely thereacross, and with the fins disposed in a flexure wherein the free ends thereof are disposed in abutting engagement with adjacent fins.
Inventors
- 👤 Connor J O
- 👤 S Pasternak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F28F1/04; B; B21; B21J; B21J5/00; B21J5/06; B21J5/068; F28F1/10; F28F1/12; F28F1/24; F28F1/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A heat transfer element comprising a. an elongated tubular member substantially rectangular in transverse cross-section, having two oppositely disposed elongated walls, b. a plurality of elongated fins projeCting from said walls and extending transversely to the length thereof, c. said fins having 1. elongated base portions a. integral with said walls, and b. spaced from each other longitudinally of said walls, 2. convex surfaces facing away from one end portion of said tubular member, and 3. free end portions a. disposed at the sides of said fins remote from said walls, and b. disposed in abutting engagement with said convex surfaces of adjacent ones of said fins, d. adjacent ones of said fins together with said walls defining elongated tubular passages extending traversely to the length of said walls.
Claim 2
Dependent Claim
129 words
A heat transfer element comprising a. an elongated tubular member substantially rectangular in transverse cross-section, having two oppositely disposed elongated walls, b. a plurality of elongated fins projeCting from said walls and extending transversely to the length thereof, c. said fins having 1. elongated base portions a. integral with said walls, and b. spaced from each other longitudinally of said walls, 2. convex surfaces facing away from one end portion of said tubular member, and 3. free end portions a. disposed at the sides of said fins remote from said walls, and b. disposed in abutting engagement with said convex surfaces of adjacent ones of said fins, d. adjacent ones of said fins together with said walls defining elongated tubular passages extending traversely to the length of said walls.
Claim 3
Dependent Claim
24 words
A heat transfer element as defined in claim 1, and in which a. the extremities of said free end portions face toward said walls.
Claim 4
Dependent Claim
13 words
convex surfaces facing away from one end portion of said tubular member, and
Claim 5
Dependent Claim
13 words
convex surfaces facing away from one end portion of said tubular member, and
Claim 6
Dependent Claim
28 words
A heat transfer element as defined in claim 1, and in which a. said tubular passages are interrupted along their lengths to define a plurality of spaced sections.
Claim 7
Dependent Claim
53 words
free end portions a. disposed at the sides of said fins remote from said walls, and b. disposed in abutting engagement with said convex surfaces of adjacent ones of said fins, d. adjacent ones of said fins together with said walls defining elongated tubular passages extending traversely to the length of said walls.
Claim 8
Dependent Claim
53 words
free end portions a. disposed at the sides of said fins remote from said walls, and b. disposed in abutting engagement with said convex surfaces of adjacent ones of said fins, d. adjacent ones of said fins together with said walls defining elongated tubular passages extending traversely to the length of said walls.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |