Patent US3734168A successfully refreshed from Google Patents.
US3734168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water or like boiler
Assignee: United Aircraft Products Inc
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Filing: 1971-12-03
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Granted: 1973-05-22
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Expires: 1991-12-03
Abstract
Abstract A water boiler type cooling device in which provision is made for continuing operation of the device despite temporary inverted attitude or negative gravity conditions of operation. Continuous venting without loss of liquid is provided for as well as means continuously to present liquid for vaporization at heated surfaces.
Inventors
- 👤 Groote R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:03
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0226; B; B64; B64G; B64G1/00; B64G1/22; B64G1/46; F24; F24H; F24H1/00; F28D15/00; F28D15/02; Y; Y10; Y10S; Y10S165/00; Y10S165/001; Y10S165/004
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
A liquid boiler type cooling device, including a closed tank containing a body of vaporizable liquid which in use provides a vapor space in the normally upper part of the tank having regard to a normal attitude of use thereof, a vapor outlet from said tank in the normally upper part thereof, a heat exchanger disposing in a fixed position in the tank and connected for flow of a heated fluid therethrough for cooling by rejecting heat to said liquid, said heat exchanger in a normal tank attitude and under positive gravity conditions being positioned to be submerged by the liquid in said tank, manifold means in said tank defining a chamber through which the tank interior communicates with said vapor outlet, a gravity responsive valve controlling communication of the vapor space in the normally upper part of said tank with said chamber, and a continuously open tube extending from said chamber to the normally lower part of the tank to communicate with a vapor space created therein by displacement of the body of liquid to the normally upper part of the tank as caused by an inverting of the tank or by negative gravity.
Claim 2
Dependent Claim
195 words
A liquid boiler type cooling device, including a closed tank containing a body of vaporizable liquid which in use provides a vapor space in the normally upper part of the tank having regard to a normal attitude of use thereof, a vapor outlet from said tank in the normally upper part thereof, a heat exchanger disposing in a fixed position in the tank and connected for flow of a heated fluid therethrough for cooling by rejecting heat to said liquid, said heat exchanger in a normal tank attitude and under positive gravity conditions being positioned to be submerged by the liquid in said tank, manifold means in said tank defining a chamber through which the tank interior communicates with said vapor outlet, a gravity responsive valve controlling communication of the vapor space in the normally upper part of said tank with said chamber, and a continuously open tube extending from said chamber to the normally lower part of the tank to communicate with a vapor space created therein by displacement of the body of liquid to the normally upper part of the tank as caused by an inverting of the tank or by negative gravity.
Claim 3
Dependent Claim
49 words
A cooling device according to claim 1, characterized by means in a substantially surrounding relation to said heat exchanger forming a liquid reservoir retaining liquid at said heat exchanger under inverted attitude and negative gravity conditions for a limited time period irrespective of displacement of the body of liquid.
Claim 4
Dependent Claim
63 words
A cooling device according to claim 2, wherein said heat exchanger is comprised of a bundle of tubes mounted in the tank in the normally lower part thereof and opening at its ends through opposed tank walls, the tubes in said bundle being in spaced parallel relation to one another and normally in directly contacting relation to liquid in said body of liquid.
Claim 5
Dependent Claim
73 words
A cooling device according to claim 3, wherein said means forming a liquid reservoir comprises perforate wall means installed in a surrounding relation to the tube bundle normally within the contained body of liquid and cloth-like means held between a pair of walls in said perforate wall means whereby to establish a barrier maintaining a supply of liquid at the tube bundle, which barrier is permeable to replacement liquid and to liberated vapor.
Claim 6
Dependent Claim
49 words
A cooling device according to claim 1, wherein said gravity responsive valve is a check valve, said manifold means providing an opening through which said chamber communicates with the upper part of the tank interior, said valve seating in to close said opening under inverted or negative gravity conditions.
Claim 7
Dependent Claim
69 words
A cooling device according to claim 1, characterized by a pressure regulating valve controlling said vapor outlet, said pressure regulating valve normally blocking vapor flow to and through said vapor outlet and being an absolute pressure relief valve of the damped bellows type providing a valve closing spring pressure yielding a force equal to a selected pressure at which it is desired to open flow through said vapor outlet.
Claim 8
Dependent Claim
59 words
A cooling device according to claim 6, wherein said manifold means disposed in a substantially enclosing relation to said vapor outlet and is formed with an opening into the tank intErior, said manifold means providing a cage in suspended relation thereto below said opening, said gravity responsive valve having the form of a ball freely movable in said cage.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |