US4075400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Over temperature battery deactivation system
Assignee: Organization World Intellectual Property
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Filing: 1977-02-04
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Granted: 1978-02-21
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Expires: 1997-02-04
Abstract
Abstract A battery poisoning agent contained in thermoplastic encapsulating material, positioned adjacent a battery electrode or within the battery separators, which will melt at a predetermined temperature and release the poisoning material, deactivates that portion of a battery that is exceeding the predetermined temperature.
Inventors
- 👤 David H. Fritts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:40
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/4235; H01M10/60; H01M10/64; H01M10/647; H01M10/65; H01M10/656; H01M10/6569; H01M2200/00; H01M2200/10; H01M2200/20; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
The improvement in battery structure to deactivate the battery in locations within the battery where overheating and temperatures exceeding a predetermined safe value occur, the said battery having an electrode and a separator containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said battery poisoning agent; and c. means for positioning the said encapsulant encapsulating the said positioning agent between the said electrode and the said separator.
Claim 2
Dependent Claim
87 words
The improvement in battery structure to deactivate the battery in locations within the battery where overheating and temperatures exceeding a predetermined safe value occur, the said battery having an electrode and a separator containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said battery poisoning agent; and c. means for positioning the said encapsulant encapsulating the said positioning agent between the said electrode and the said separator.
Claim 3
Dependent Claim
106 words
The improvement in battery structure for deactivating the battery in locations within the battery where overheating and temperature exceeding a predetermined safe value occur, the said battery having an electrode, and separator material containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said battery poisoning agent; and c. means, including a mat fabricated from the same material as the said separator material, for positioning the said encapsulant. substantially uniformly throughout the cross section area between the said electrode and the said separator material containing an electrolyte.
Claim 4
Dependent Claim
106 words
The improvement in battery structure for deactivating the battery in locations within the battery where overheating and temperature exceeding a predetermined safe value occur, the said battery having an electrode, and separator material containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said battery poisoning agent; and c. means, including a mat fabricated from the same material as the said separator material, for positioning the said encapsulant. substantially uniformly throughout the cross section area between the said electrode and the said separator material containing an electrolyte.
Claim 5
Dependent Claim
83 words
The improvement in battery structure for deactivating the battery in locations within the battery where overheating and temperature exceeding a predetermined safe value occur, the said battery having an anode, a cathode, and a separator containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said poisoning agent; and c. means for positioning and holding the said encapsulant substantially uniformly over the said anode.
Claim 6
Dependent Claim
83 words
The improvement in battery structure for deactivating the battery in locations within the battery where overheating and temperature exceeding a predetermined safe value occur, the said battery having an anode, a cathode, and a separator containing an electrolyte, the said improvement comprising: a. a battery poisoning agent; b. an encapsulant having a determined melting temperature approximately equal to the said safe value, encapsulating the said poisoning agent; and c. means for positioning and holding the said encapsulant substantially uniformly over the said anode.
Claim 7
Dependent Claim
13 words
The improvement as claimed in claim 3 wherein the said encapsulant comprises globules.
Claim 8
Dependent Claim
19 words
The improvement as claimed in claim 4 wherein the said means for holding the said globules includes an adhesive.
Claim 9
Dependent Claim
20 words
The improvement as claimed in claim 4 wherein the said means for holding the said globules is a woven mat.
References Cited (Backward Citations)
US795325A
Cited
US3877996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |