Patent US3769229A successfully refreshed from Google Patents.
Patent AU487906B2 successfully refreshed from Google Patents.
AU487906B2
Expired / Lapsed
AU
⏱️ 0.0 years remaining
Heat exchanger fin
Assignee: Linoln David Washington
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Filing: 1974-04-23
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Granted: 1977-10-21
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Expires: 1994-04-23
Abstract
No abstract record available.
Inventors
- 👤 David Washington Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
AU
Data Source
google_patents
Last Synchronized
2026-11-09 04:52
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F28F1/325
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
80,4 22n75 The claims defining the invention are as follows:- i. A fin for a heat exchanger wherein a flow of air moves past a plurality of water tubes, the fin contain- ing a plurality of rows of water tube apertures, a plurality of openings each positioned between a pair of adjacent water tube apertures of a said row thereof, each opening extend- ing in a direction which is transverse to the direction of air flow, characterised by each opening having one edge displaced from the plane of the fin to thereby form a louvre, there being louvres in each transverse row which face respectively toward and away from the direction of air flow.
Claim 2
Dependent Claim
21 words
A fin according to claim 1 wherein each said louvre has a raised portion which is of general part- spherical shape.
Claim 3
Dependent Claim
17 words
A fin according to claim 2 wherein said part- spherical shape is provided with a flat portion.
Claim 4
Dependent Claim
172 words
A fin according to any preceding/claim wherein the centre-line of any one row of louvres co-incides with a respective said row of water tube apertures. A fin according to any preceding claim wherein alternate said louvres of any one row face in opposite directions. 6. A fin according to claim 1 wherein each said opening is formed by the method of first forming a slit 487,906 wE 804 22 in the fin and secondly deforming one edge of the slit in a direction away from the plane of the fin. 7. A fin according to any preceding claim wherein the leading and trailing edges of the fin are folded over and flattened. 8. A fin substantially according to the embodiment described in the specification with reference to and as illustrated in the accompanying drawings. Dated this 6th day of October 1977. LINCOLN DAVID WASHINGTON, By his Patent Attorneys, R.K. MADDERN ASSOCIATES 487.906 80,422/75 II -714 112 F~j 0 4o 1fg1o :11 rMg. Fu~g0 2 487,906 80.4 225 Fi.. ng.cd 4 8 7,.086-
References Cited (Backward Citations)
No citation records indexed.
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