Patent US3237281A successfully refreshed from Google Patents.
US3237281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making thermoelectric devices
Assignee: 3M Co
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Filing: 1961-01-03
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Granted: 1966-03-01
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Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 David L Antonson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:30
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
THE METHOD OF FORMING A THERMOELECTRIC DEVICE COMPRISING THE STEPS OF (1) ARRANGING IN SPACED PARALLEL RELATION AN ELONGATED BAR OF P-TYPE AND AN ELONGATED BAR OF N-TYPE THEREMOELECTRIC MATERIAL; (2) ELECTRICALLY CONDUCTIVELY BONDING FIRST CONTACT PLATE MEANS TO ONE SIDE OF BOTH BARS AND SECOND CONTACT PLATE MEANS TO THE OPPOSITE SIDE OF BOTH BARS; (3) FORMING A PLURALITY OF FIRST SLOTS EXTENDING THROUGH SAID P-TYPE BAR AND THE PORTIONS OF SAID PLATES BONDED THERETO TO DIVIDE THE P-TYPE BAR INTO A PLURALITY OF SPACED P-TYPE THERMOELEMENTS; AND (4) FORMING A PLURALITY OF SECOND SLOTS IN SAID N-TYPE BAR AND IN THE PORTIONS OF SAID PLATES BONDED THERETO TO DIVIDE THE N-TYPE BAR INTO A PLURALITY OF SPACED N-TYPE THERMOELEMENTS, EACH OF WHICH FIRST SLOTS CONNECTS THROUGH THE FIRST PLATE TO ONE OF SAID SECOND SLOTS IN SAID N-TYPE BAR AND ALSO CONNECTS THROUGH THE SECOND PLATE TO A SECOND SLOT IN SAID N-TYPE BAR NEXT ADJACENT SAID ONE OF SAID SECOND SLOTS TO DIVIDE SAID FIRST CONTACT PLATE MEANS INTO A PLURALITY OF SPACED FIRST THERMOJUNCTION MEMBERS AND SAID SECOND CONTACT PLATE MEANS INTO A PLURALITY OF SPACED SECOND THERMOJUNCTION MEMBERS; EACH OF SAID FIRST MEMBERS ELECTRICALLY CONNECTING A P-TYPE THERMOELEMENT TO AN N-TYPE THERMOELEMENT AND EACH OF SAID SECOND MEMBERS ELECTRICALLY CONNECTING ONE P-TYPE THERMOELEMENT TO AN N-TYPE THERMOELEMENT NEXT ADJACENT THE N-TYPE THERMOELEMENT TO WHICH SAID ONE P-TYPE THERMOELEMENT IS CONNECTED BY A SAID FIRST MEMBER, THEREBY PROVIDING A GENERALLY HELICAL CURRENT FLOW PATH THROUGH THE DEVICE.
Claim 2
Independent Claim
251 words
THE METHOD OF FORMING A THERMOELECTRIC DEVICE COMPRISING THE STEPS OF (1) ARRANGING IN SPACED PARALLEL RELATION AN ELONGATED BAR OF P-TYPE AND AN ELONGATED BAR OF N-TYPE THEREMOELECTRIC MATERIAL; (2) ELECTRICALLY CONDUCTIVELY BONDING FIRST CONTACT PLATE MEANS TO ONE SIDE OF BOTH BARS AND SECOND CONTACT PLATE MEANS TO THE OPPOSITE SIDE OF BOTH BARS; (3) FORMING A PLURALITY OF FIRST SLOTS EXTENDING THROUGH SAID P-TYPE BAR AND THE PORTIONS OF SAID PLATES BONDED THERETO TO DIVIDE THE P-TYPE BAR INTO A PLURALITY OF SPACED P-TYPE THERMOELEMENTS; AND (4) FORMING A PLURALITY OF SECOND SLOTS IN SAID N-TYPE BAR AND IN THE PORTIONS OF SAID PLATES BONDED THERETO TO DIVIDE THE N-TYPE BAR INTO A PLURALITY OF SPACED N-TYPE THERMOELEMENTS, EACH OF WHICH FIRST SLOTS CONNECTS THROUGH THE FIRST PLATE TO ONE OF SAID SECOND SLOTS IN SAID N-TYPE BAR AND ALSO CONNECTS THROUGH THE SECOND PLATE TO A SECOND SLOT IN SAID N-TYPE BAR NEXT ADJACENT SAID ONE OF SAID SECOND SLOTS TO DIVIDE SAID FIRST CONTACT PLATE MEANS INTO A PLURALITY OF SPACED FIRST THERMOJUNCTION MEMBERS AND SAID SECOND CONTACT PLATE MEANS INTO A PLURALITY OF SPACED SECOND THERMOJUNCTION MEMBERS; EACH OF SAID FIRST MEMBERS ELECTRICALLY CONNECTING A P-TYPE THERMOELEMENT TO AN N-TYPE THERMOELEMENT AND EACH OF SAID SECOND MEMBERS ELECTRICALLY CONNECTING ONE P-TYPE THERMOELEMENT TO AN N-TYPE THERMOELEMENT NEXT ADJACENT THE N-TYPE THERMOELEMENT TO WHICH SAID ONE P-TYPE THERMOELEMENT IS CONNECTED BY A SAID FIRST MEMBER, THEREBY PROVIDING A GENERALLY HELICAL CURRENT FLOW PATH THROUGH THE DEVICE.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |