US3746086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Peerless of America Inc
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Filing: 1971-08-27
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Granted: 1973-07-17
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Expires: 1991-08-27
Abstract
Abstract A heat exchanger embodying an elongated tubular member with integral fins, in the form of spines, projecting outwardly therefrom in rows, with the transversely adjacent fins in adjacent rows being disposed different distances from an end of the tubular member.
Inventors
- 👤 S Pasternak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:19
CPC Classifications
B; B21; B21D; B21D31/00; B21D53/00; B21D53/02; B21J; B21J5/00; B21J5/06; B21J5/068; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49385
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
100 words
A heat transfer element comprising a. a tubular member having an elongated wall, b. a plurality of fins projecting outwardly from said wall in a plurality of laterally spaced rows, c. said fins in each of said rows 1. having base portions extending transversely to their respective row, and 2. having free end portions projecting outwardly of said base portions, d. said free end portions of said fins in certain of said rows projecting toward one end of said wall a greater distance than do said free end portions of immediately transversely adjacent fins in the other of said rows.
Claim 2
Dependent Claim
100 words
A heat transfer element comprising a. a tubular member having an elongated wall, b. a plurality of fins projecting outwardly from said wall in a plurality of laterally spaced rows, c. said fins in each of said rows 1. having base portions extending transversely to their respective row, and 2. having free end portions projecting outwardly of said base portions, d. said free end portions of said fins in certain of said rows projecting toward one end of said wall a greater distance than do said free end portions of immediately transversely adjacent fins in the other of said rows.
Claim 3
Dependent Claim
47 words
turning said fins outwardly into outwardly projecting position wherein said free end portions of said fins on alternate ones of said rows project further toward one end of said tubular member than the free end portions on immediately transversely adjacent fins in the outer of said rows.
Claim 4
Dependent Claim
47 words
turning said fins outwardly into outwardly projecting position wherein said free end portions of said fins on alternate ones of said rows project further toward one end of said tubular member than the free end portions on immediately transversely adjacent fins in the outer of said rows.
Claim 5
Dependent Claim
50 words
having free end portions projecting outwardly of said base portions, d. said free end portions of said fins in certain of said rows projecting toward one end of said wall a greater distance than do said free end portions of immediately transversely adjacent fins in the other of said rows.
Claim 6
Dependent Claim
50 words
having free end portions projecting outwardly of said base portions, d. said free end portions of said fins in certain of said rows projecting toward one end of said wall a greater distance than do said free end portions of immediately transversely adjacent fins in the other of said rows.
Claim 7
Dependent Claim
43 words
A heat transfer element as defined in claim 1, and in which a. said base portions of said fins in said certain rows are disposed in substantially longitudinal alignment with said base portions of said immediately transversely adjacent fins in said other rows.
Claim 8
Dependent Claim
21 words
has two substantially parallel outer faces, and b. said rows of fins are disposed on at least one of said faces.
Claim 9
Dependent Claim
21 words
has two substantially parallel outer faces, and b. said rows of fins are disposed on at least one of said faces.
Claim 10
Dependent Claim
47 words
A heat transfer element as defined in claim 1, and in which a. said base portIons of said fins in said certain rows are disposed in substantially parallel relation to a longitudinal projection of said base portions of said immediately transversely adjacent fins in said other rows.
Claim 11
Dependent Claim
26 words
A heat transfer element as defined in claim 1, and in which a. said laterally spaced rows are alternately said certain rows and said other rows.
Claim 12
Dependent Claim
43 words
A heat transfer element as defined in claim 4, and in which a. said base portions of said fins in said certain rows are disposed in substantially longitudinal alignment with said base portions of said immediately transversely adjacent fins in said other rows.
Claim 13
Dependent Claim
47 words
A heat transfer element as defined in claim 4, and in which a. said base portions of said fins in said certain rows are disposed in substantially parallel relation to a longitudinal projection of said base portions of said immediately transversely adjacent fins in said other rows.
Claim 14
Dependent Claim
16 words
A heat transfer element as defined in claim 1, and in which a. said tubular member
Claim 15
Dependent Claim
26 words
A heat transfer element as defined in claim 7, and in which a. said laterally spaced rows are alternately said certain rows and said other rows.
Claim 16
Dependent Claim
43 words
A heat transfer element as defined in claim 8, and in which a. said base portions of said fins in said certain rows are disposed in substantially longitudinal alignment with said base portions of said immediately transversely adjacent fins in said other rows.
Claim 17
Dependent Claim
47 words
A heat transfer element as defined in claim 8, and in which a. said base portions of said fins in said certain rows are disposed in substantially parallel relation to a longitudinal projection of said base portions of said immediately transversely adjacent fins in said other rows.
Claim 18
Dependent Claim
41 words
A heat transfer element as defined in claim 8, and in which a. said one face has a plurality of outwardly projecting, substantially parallel spaced ribs thereon, and b. said rows of fins are disposed on respective ones of said ribs.
Claim 19
Independent Claim
46 words
The method of making a heat transfer element, comprising a. forming an elongated tubular member having a wall portion with spaced elongated ribs extending longitudinally of said tubular member, and b. successively, from one end portion of said tubular member toward the other end portion thereof,
Claim 20
Independent Claim
46 words
The method of making a heat transfer element, comprising a. forming an elongated tubular member having a wall portion with spaced elongated ribs extending longitudinally of said tubular member, and b. successively, from one end portion of said tubular member toward the other end portion thereof,
Claim 21
Dependent Claim
32 words
The method of making a heat transfer element as defined in claim 12, and in which a. the immediately transversely adjacent fins on adjacent rows are formed with longitudinally aligned base portions.
Claim 22
Dependent Claim
31 words
The method of making a heat transfer element as defined in claim 12, and in which a. the fins in said alternate rows are formed with said base portions thereof disposed
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |