US3940348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction catalyst for the elimination of oxyhydrogen gas in lead-acid storage batteries
Assignee: Accumulatorenwerk Hoppecke Carl Zoellner and Sohn KG
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Filing: 1973-03-15
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Granted: 1976-02-24
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Expires: 1993-03-15
Abstract
Abstract A reaction catalyst for the recombination of the oxyhydrogen gas produced by lead-acid storage batteries into water in a controlled, exothermic reaction, where the catalyst element is a solid rod element with a central heat conducting core, the catalyst rod being positioned inside a gas-tight housing in communication with the battery gas space. This rod element is produced by a fabricating method in which granular catalyst carrier material is worked into a paste which is then shaped and dried, the metallic catalyst being deposited on the surface of the carrier grains.
Inventors
- 👤 Norbert Lahme
- 👤 Gunter Sassmannshausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
75 words
A unitary catalyst element for catalytically recombining into water a gas mixture of oxygen and hydrogen formed during operation of a lead-acid storage battery, comprising a single elongated catalyst carrier body in the form of a permeable coherent solid; an active metallic catalyst material of the platinum group carried on the surface of the permeable catalyst carrier body; and an axially disposed core member of highly heat conductive material enclosed within said catalyst carrier body.
Claim 2
Dependent Claim
75 words
A unitary catalyst element for catalytically recombining into water a gas mixture of oxygen and hydrogen formed during operation of a lead-acid storage battery, comprising a single elongated catalyst carrier body in the form of a permeable coherent solid; an active metallic catalyst material of the platinum group carried on the surface of the permeable catalyst carrier body; and an axially disposed core member of highly heat conductive material enclosed within said catalyst carrier body.
Claim 3
Dependent Claim
17 words
A unitary catalyst element as defined by claim 1, wherein said active metallic catalyst material comprises palladium.
Claim 4
Dependent Claim
16 words
A unitary catalyst element as defined by claim 1, wherein said catalyst carrier body comprises alumina.
Claim 5
Dependent Claim
26 words
A unitary catalyst element as defined by claim 1, wherein said catalyst carrier body comprises a granular base material bonded together to form a coherent solid.
Claim 6
Dependent Claim
42 words
A unitary catalyst element as defined by claim 1, wherein said catalyst carrier body comprises a cylindrical rod having a hollow longitudinal center bore and said core member of highly heat conductive material comprises a metallic rod tightly fitted within said bore.
Claim 7
Dependent Claim
17 words
A unitary catalyst element as defined by claim 5, wherein said metallic rod is a copper rod.
Claim 8
Independent Claim
95 words
A method for fabricating a unitary catalyst element for catalytically reconverting into water a gas mixture of hydrogen and oxygen resulting from operation of a lead-acid storage batter, comprising the steps of: admixing water with a granular catalyst carrier material to form a paste; shaping said paste into a three-dimensional form of elongated configuration; drying the shaped carrier material; providing said elongated form with a longitudinally disposed central core of a highly heat conductive metallic material; and applying an active metallic catalyst material of the platinum group to the surface of said catalyst carrier material.
Claim 9
Independent Claim
95 words
A method for fabricating a unitary catalyst element for catalytically reconverting into water a gas mixture of hydrogen and oxygen resulting from operation of a lead-acid storage batter, comprising the steps of: admixing water with a granular catalyst carrier material to form a paste; shaping said paste into a three-dimensional form of elongated configuration; drying the shaped carrier material; providing said elongated form with a longitudinally disposed central core of a highly heat conductive metallic material; and applying an active metallic catalyst material of the platinum group to the surface of said catalyst carrier material.
Claim 10
Dependent Claim
50 words
A method for fabricating a unitary catalyst element as defined by claim 7, wherein said step of providing said elongated form with a core of highly heat conductive material comprises providing said elongated form with a centrally disposed hollow bore and inserting into said bore a rod of metallic material.
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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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |