US4846113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power source utilizing lithium and perhalogenated polymers
Assignee: Sundstrand Corp
•
Filing: 1985-12-27
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Granted: 1989-07-11
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Expires: 2005-12-27
Abstract
Abstract The expense of provide pelletized metallic lithium for use in a heat exchanger for a thermal power source is eliminated by a construction including a closeable chamber (10, 12, 20, 22) with an ignition device (28) within the chamber (10, 12, 20, 22), and a reactant inlet (29) to the chamber (10, 12, 20, 22) by disposing a body of fuel (24) in the chamber (10, 12, 20, 22) which is made up of alternating layer of metallic lithium sheet (42, 44) and solid perhalogenated polymer sheet (40, 46).
Inventors
- 👤 David Morgan
- 👤 Donald A. Straznickas, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:52
CPC Classifications
F; F01; F01K; F01K3/00; F01K3/18; F01K3/188
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
45 words
A heat exchanger for a thermal power source comprising; a closeable chamber; an ignition device in said chamber; a reactant inlet to said chamber; and a body of fuel in said chamber comprised of alternating layers of metallic lithium sheet and solid perhalogenated polymer sheet.
Claim 2
Dependent Claim
45 words
A heat exchanger for a thermal power source comprising; a closeable chamber; an ignition device in said chamber; a reactant inlet to said chamber; and a body of fuel in said chamber comprised of alternating layers of metallic lithium sheet and solid perhalogenated polymer sheet.
Claim 3
Dependent Claim
13 words
The heat exchanger of claim 1 wherein said polymer is predominantly fluorine substituted.
Claim 4
Dependent Claim
19 words
The heat exchanger of claim 2 wherein said body is made up of spirally wound ones of said layers.
Claim 5
Dependent Claim
16 words
The heat exchanger of claim 2 wherein said polymer sheet is coated on said lithium sheet.
Claim 6
Dependent Claim
13 words
The heat exchanger of claim 2 wherein said polymer sheet is a fabric.
Claim 7
Dependent Claim
20 words
The heat exchanger of claim 2 wherein said body is formed by spirally winding said layers on said ignition device.
Claim 8
Dependent Claim
22 words
The heat exchanger of claim 2 wherein said body is provided with cut outs to attain a desired ullage within said chamber.
Claim 9
Dependent Claim
23 words
The heat exchanger of claim 2 wherein said reactant inlet comprises nozzles, and said body is provided with cut outs at said nozzles.
Claim 10
Dependent Claim
13 words
The heat exchanger of claim 2 wherein said lithium sheet is lithium foil.
Claim 11
Dependent Claim
16 words
The heat exchanger of claim 1 wherein said chamber includes means defining a liquid flow path.
Claim 12
Dependent Claim
66 words
A vessel for use in a power generating system including: a reaction chamber; a working fluid heating chamber in heat exchange relation to said reaction chamber; at least one oxidant nozzle within said reaction chamber for introducing an oxidant into said reaction chamber; and a body of fuel in said reaction chamber comprised of interleaved sheets of lithium metal and solid perhalogenated predominantly fluorinated polymeric material.
Claim 13
Dependent Claim
66 words
A vessel for use in a power generating system including: a reaction chamber; a working fluid heating chamber in heat exchange relation to said reaction chamber; at least one oxidant nozzle within said reaction chamber for introducing an oxidant into said reaction chamber; and a body of fuel in said reaction chamber comprised of interleaved sheets of lithium metal and solid perhalogenated predominantly fluorinated polymeric material.
Claim 14
Dependent Claim
46 words
The vessel of claim 11 wherein said sheets are spirally wound to encompass an ignition device and include at least one cut out about said nozzle, said cut out allowing oxidant to disperse within said reaction chamber and being sized to provide a desired ullage therein.
Claim 15
Dependent Claim
22 words
The vessel of claim 12 wherein said sheet of polymeric material is formed by coating said polymeric material on said lithium sheet.
Claim 16
Dependent Claim
13 words
The vessel of claim 12 wherein said sheets are separate from one another.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |