US3901312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers and method of making same
Assignee: Peerless of America Inc
•
Filing: 1974-02-01
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Granted: 1975-08-26
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Expires: 1994-02-01
Abstract
Abstract A heat exchanger embodying an elongated tubular member with integral elongated fins extending transversely thereacross and projecting outwardly therefrom, the fins having internal openings extending therethrough.
Inventors
- 👤 Stephen F Pasternak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/26; B; B21; B21J; B21J5/00; B21J5/06; B21J5/068; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
A heat transfer element comprising a. an elongated tubular member, b. said tubular member having an integral side wall having a substantially rectangular-shaped outer face, c. a plurality of fins 1. spaced from each other longitudinally of said wall, and 2. projecting outwardly from said outer face, d. said fins having 1. elongated base portions a. integral to said wall, b. extending transversely to the length of said wall and of said tubular member, 2. outer longitudinal edges, and 3. a plurality of openings therethrough a. spaced from each other transversely to the length of said wall, and b. spaced from said outer longitudinal edges.
Claim 2
Dependent Claim
105 words
A heat transfer element comprising a. an elongated tubular member, b. said tubular member having an integral side wall having a substantially rectangular-shaped outer face, c. a plurality of fins 1. spaced from each other longitudinally of said wall, and 2. projecting outwardly from said outer face, d. said fins having 1. elongated base portions a. integral to said wall, b. extending transversely to the length of said wall and of said tubular member, 2. outer longitudinal edges, and 3. a plurality of openings therethrough a. spaced from each other transversely to the length of said wall, and b. spaced from said outer longitudinal edges.
Claim 3
Dependent Claim
10 words
projecting outwardly from said outer face, d. said fins having
Claim 4
Dependent Claim
10 words
projecting outwardly from said outer face, d. said fins having
Claim 5
Dependent Claim
4 words
outer longitudinal edges, and
Claim 6
Dependent Claim
4 words
outer longitudinal edges, and
Claim 7
Dependent Claim
32 words
A heat exchanger as defined in claim 1, and in which a. said openings are elongated in a direction transverse to the lengths of said base portions and of said longitudinal edges.
Claim 8
Dependent Claim
20 words
substantially the same length as said base portions of the respective ones of said fins on which they are disposed.
Claim 9
Dependent Claim
20 words
substantially the same length as said base portions of the respective ones of said fins on which they are disposed.
Claim 10
Dependent Claim
20 words
A heat exchanger as defined in claim 2, and in which a. said openings are spaced from said base portions.
Claim 11
Dependent Claim
25 words
a plurality of openings therethrough a. spaced from each other transversely to the length of said wall, and b. spaced from said outer longitudinal edges.
Claim 12
Dependent Claim
25 words
a plurality of openings therethrough a. spaced from each other transversely to the length of said wall, and b. spaced from said outer longitudinal edges.
Claim 13
Dependent Claim
22 words
A heat exchanger as defined in claim 3, and in which a. said face is substantially flat, b. said longitudinal edges are
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |