US3693374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable temperature cooling apparatus
Assignee: Honeywell Inc
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Filing: 1970-11-18
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Granted: 1972-09-26
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Expires: 1990-11-18
Abstract
Abstract Variable temperature cooling apparatus in which a cooling element and an element to be cooled are provided with interfitting thermally conducting members arranged so that relative movement between the elements varies the area of contact between the members and hence the rate of heat transfer therethrough. Means for accomplishing the relative movement may be incorporated in or independent of the contact area varying arrangement.
Inventors
- 👤 Toivo A Juvonen
- 👤 Gene A Robillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:06
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25; F25D; F25D3/00; F25D3/10; F28; F28F; F28F27/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A variable temperature cooling apparatus comprising, in combination: a first hollow elongated heat conducting member having a closed end; a heat load mounted on said end; a second elongated heat conducting member maintained at a desired temperature and located within said hollow heat conducting member in continuous variable area; means providing a conductive heat transfer path of variable area between said heat conducting members; and means varying the area of contact between said heat conducting members, thereby increasing or decreasing the heat transferred from said heat load to said second heat conducting member.
Claim 2
Dependent Claim
93 words
A variable temperature cooling apparatus comprising, in combination: a first hollow elongated heat conducting member having a closed end; a heat load mounted on said end; a second elongated heat conducting member maintained at a desired temperature and located within said hollow heat conducting member in continuous variable area; means providing a conductive heat transfer path of variable area between said heat conducting members; and means varying the area of contact between said heat conducting members, thereby increasing or decreasing the heat transferred from said heat load to said second heat conducting member.
Claim 3
Dependent Claim
117 words
A variable temperature cooling apparatus comprising in combination: a first elongated hollow dewar having a closed end and an open end, and a heat conducting portion located within said open end; a heat load mounted on said heat conducting portion; an elongated heat conducting member maintained at a desired temperature and located within said open end of said dewar, and having a heat conducting end which is in variable area contact with said heat conducting portion of said dewar; and means varying throughout a predetermined range the area of contact between said heat conducting portion and said heat conducting end, thereby increasing or decreasing the heat transferred from said heat load to said second heat conducting member.
Claim 4
Dependent Claim
117 words
A variable temperature cooling apparatus comprising in combination: a first elongated hollow dewar having a closed end and an open end, and a heat conducting portion located within said open end; a heat load mounted on said heat conducting portion; an elongated heat conducting member maintained at a desired temperature and located within said open end of said dewar, and having a heat conducting end which is in variable area contact with said heat conducting portion of said dewar; and means varying throughout a predetermined range the area of contact between said heat conducting portion and said heat conducting end, thereby increasing or decreasing the heat transferred from said heat load to said second heat conducting member.
Claim 5
Dependent Claim
106 words
A variable temperature cooling apparatus comprising in combination: a first elongated hollow dewar having a closed end and an open end, and a heat conducting portion located within said open end; a heat load mounted on said heat conducting portion; a second elongated dewar, maintained at a desired temperature and located within said hollow heat conducting member, including a heat conducting end which is in variable area contact with said heat conducting portion; and means varying the area of contact between said heat conducting portion and said heat conducting end thereby increasing or decreasing the heat transferred from said heat load to said second elongated dewar.
Claim 6
Dependent Claim
106 words
A variable temperature cooling apparatus comprising in combination: a first elongated hollow dewar having a closed end and an open end, and a heat conducting portion located within said open end; a heat load mounted on said heat conducting portion; a second elongated dewar, maintained at a desired temperature and located within said hollow heat conducting member, including a heat conducting end which is in variable area contact with said heat conducting portion; and means varying the area of contact between said heat conducting portion and said heat conducting end thereby increasing or decreasing the heat transferred from said heat load to said second elongated dewar.
Claim 7
Dependent Claim
27 words
The variable temperature dewar arrangement of claim 3 including threAds located within said open end of first dewar which mesh with threads located on said second dewar.
Claim 8
Dependent Claim
41 words
The variable temperature cooling apparatus of claim 4 wherein said means for varying the area of contact comprises means rotating said second dewar relative to said first dewar thereby providing longitudinal movement of said second dewar relative to said first dewar.
Claim 9
Dependent Claim
36 words
The variable temperature dewar arrangement of claim 5 including a spiral thread located on said heat conducting end of said second dewar which threads are in contact with said heat conductive portion of said first dewar.
Claim 10
Dependent Claim
33 words
The variable temperature dewar arrangement of claim 3 wherein said heat conducting portion of said first dewar contains threads which mesh with threads located on said heat conducting end of said second dewar.
Claim 11
Dependent Claim
41 words
The variable temperature cooling apparatus of claim 4 wherein said means for varying the area of contact comprises: means rotating said second dewar relative to said first dewar thereby providing longitudinal movement of said second dewar relative to said first dewar.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |