Patent US4928756A successfully refreshed from Google Patents.
US4928756A
Expired / Lapsed
US
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Heat dissipating fin and method for making fin assembly
Assignee: Newport Corp USA
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Filing: 1988-08-04
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Granted: 1990-05-29
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Expires: 2008-08-04
Abstract
Abstract A compressible heat-dissipating fin, a compressed heat-dissipating fin assembly, and a method for making a fin assembly for cooling an electromechanical device such as a transverse-flow forced air-cooled ion gas laser are disclosed. Each fin preferably has a slit running through its center except for a small hinge. The slit provides the fin with compressibility and increased contact pressure when the fin is fitted directly to and compressed against the tube, preferably by clamping, during the brazing cycle.
Inventors
- 👤 William Shull
- 👤 Rudolph Nissen
- 👤 Alexander Drobshoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:22
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/30; F28F2215/00; F28F2215/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
122 words
A compressible heat-dissipating fin, attached to a tube, comprising a metal plate having a flange and a peripheral edge, said flange defining an aperture adapted to compress against the tube, said peripheral edge of the plate defining a pair of opposed substantially parallel lips, and wherein the plate, the pair of lips, and the flange are formed from a single piece of metal, said plate further comprising a first slit defined by the plate and extending from the aperture to the peripheral edge of the plate and a second slit defined by the plate and extending from the flange to the peripheral edge of the plate, and wherein the compressible heat-dissipating fin is attached to the tube by means other than welding.
Claim 2
Dependent Claim
122 words
A compressible heat-dissipating fin, attached to a tube, comprising a metal plate having a flange and a peripheral edge, said flange defining an aperture adapted to compress against the tube, said peripheral edge of the plate defining a pair of opposed substantially parallel lips, and wherein the plate, the pair of lips, and the flange are formed from a single piece of metal, said plate further comprising a first slit defined by the plate and extending from the aperture to the peripheral edge of the plate and a second slit defined by the plate and extending from the flange to the peripheral edge of the plate, and wherein the compressible heat-dissipating fin is attached to the tube by means other than welding.
Claim 3
Dependent Claim
131 words
A compressible heat-dissipating fin assembly attached to a tube, comprising a plurality of heat-dissipating fins, each fin having a metal plate having a flange and a peripheral edge, said flange defining an aperture adapted to compress against the tube, said peripheral edge of the plate defining a pair of opposed substantially parallel lips, and wherein the plate, the pair of lips, and the flange are formed from a single piece of metal, said plate further comprising a first slit defined by the plate and extending from the aperture to the peripheral edge of the plate and a second slit defined by the plate and extending from the flange to the peripheral edge of the plate, and wherein each compressible heat-dissipating fin is attached to the tube by means other than welding.
Claim 4
Dependent Claim
131 words
A compressible heat-dissipating fin assembly attached to a tube, comprising a plurality of heat-dissipating fins, each fin having a metal plate having a flange and a peripheral edge, said flange defining an aperture adapted to compress against the tube, said peripheral edge of the plate defining a pair of opposed substantially parallel lips, and wherein the plate, the pair of lips, and the flange are formed from a single piece of metal, said plate further comprising a first slit defined by the plate and extending from the aperture to the peripheral edge of the plate and a second slit defined by the plate and extending from the flange to the peripheral edge of the plate, and wherein each compressible heat-dissipating fin is attached to the tube by means other than welding.
Claim 5
Dependent Claim
17 words
The fin of claim 1 wherein the tube to which it is attached is a laser tube.
Claim 6
Dependent Claim
12 words
The fin of claim 3 wherein the metal fin comprises copper metal.
Claim 7
Dependent Claim
12 words
The fin of claim 4 wherein the metal consists essentially of copper.
Claim 8
Dependent Claim
18 words
The fin of claim 5 wherein the second slit is disposed substantially in alignment with the first slit.
Claim 9
Dependent Claim
13 words
The fin of claim 6 wherein the plate is of substantially rectangular shape.
Claim 10
Dependent Claim
20 words
The fin of claim 7, wherein the fin is in an abutting relationship to at least one other like fin.
Claim 11
Dependent Claim
19 words
The fin of claim 8, wherein the fin is one of a series of three or more like fins.
Claim 12
Dependent Claim
19 words
The fin of claim 9, wherein each fin in the series is connected to the tube with copper-silver alloy.
Claim 13
Dependent Claim
22 words
The compressible heat dissipating fin assembly of claim 2 wherein the tube to which the assembly is attached is a laser tube.
Claim 14
Dependent Claim
23 words
The assembly of claim 11 wherein each fin in the assembly is in an abutting relationship to at least one other like fin.
Claim 15
Dependent Claim
11 words
The assembly of claim 12 wherein each fin comprises copper metal.
Claim 16
Dependent Claim
13 words
The assembly of claim 13 wherein each fin consists essentially of copper metal.
Claim 17
Dependent Claim
16 words
The assembly of claim 14 wherein each fin is connected to the tube with copper-silver alloy.
Claim 18
Dependent Claim
20 words
The assembly of claim 15 wherein each fin has the second slit disposed substantially in alignment with the first slit.
Claim 19
Dependent Claim
13 words
The assembly of claim 16 wherein each fin is substantially rectangular in shape.
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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |