Patent US3334352A successfully refreshed from Google Patents.
US3334352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal recording
Assignee: BLH Electronics Inc
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Filing: 1965-03-18
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Granted: 1967-08-01
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Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Abbondante Cosmo
- 👤 Albion P Bjork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:20
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G01K1/022; G01D; G01D15/00; G01D15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
RECORDER APPARATUS OR THE LIKE OF THE TYPE WHICH UTILIZES A THERMALLY-RESPONSIVE RECORD MEDIUM TO PROVIDE VISIBLE RECORDS UPON EXPOSURE TO TEMPERATURES ABOVE A PREDETERMINED LEVEL, COMPRISING PEN MEANS INCLUDING A RELATIVELY SMALL-AREA THERMOELECTRIC JUNCTION BETWEEN DISSIMILAR-MATERIAL ELEMENTS, MEANS FOR MAINTAINING THE MATERIAL OF SAID JUNCTION IN A HEAT-EXCHANGING WRITING RELATIONSHIP WITH THE RECORD MEDIUM, AN ELECTRICAL POWER SOURCE INCLUDING MEANS FOR CONTINUOUSLY FORCING THROUGH SAID JUNCTION CURRENT ENERGIZING SAID JUNCTION IN A HEATEMITTING MODE WHEREIN IT CONTINUOUSLY EMITS HEAT AND DEVELOPS TEMPERATURES ABOVE SAID PREDETERMINED LEVEL AT SAID JUNCTIONS, AND MEANS FOR MOVING SAID PEN MEANS AND THE RECORD MEDIUM IN RELATION TO ONE ANOTHER SIMULTANEOUSLY WITH OPERATION OF THE CURRENT-FORCING MEANS TO PRODUCE CONTINUOUSLY THE HEAT-EMITTING EFFECTS AND TEMPERATURES ABOVE SAID LEVEL.
Claim 2
Dependent Claim
124 words
RECORDER APPARATUS OR THE LIKE OF THE TYPE WHICH UTILIZES A THERMALLY-RESPONSIVE RECORD MEDIUM TO PROVIDE VISIBLE RECORDS UPON EXPOSURE TO TEMPERATURES ABOVE A PREDETERMINED LEVEL, COMPRISING PEN MEANS INCLUDING A RELATIVELY SMALL-AREA THERMOELECTRIC JUNCTION BETWEEN DISSIMILAR-MATERIAL ELEMENTS, MEANS FOR MAINTAINING THE MATERIAL OF SAID JUNCTION IN A HEAT-EXCHANGING WRITING RELATIONSHIP WITH THE RECORD MEDIUM, AN ELECTRICAL POWER SOURCE INCLUDING MEANS FOR CONTINUOUSLY FORCING THROUGH SAID JUNCTION CURRENT ENERGIZING SAID JUNCTION IN A HEATEMITTING MODE WHEREIN IT CONTINUOUSLY EMITS HEAT AND DEVELOPS TEMPERATURES ABOVE SAID PREDETERMINED LEVEL AT SAID JUNCTIONS, AND MEANS FOR MOVING SAID PEN MEANS AND THE RECORD MEDIUM IN RELATION TO ONE ANOTHER SIMULTANEOUSLY WITH OPERATION OF THE CURRENT-FORCING MEANS TO PRODUCE CONTINUOUSLY THE HEAT-EMITTING EFFECTS AND TEMPERATURES ABOVE SAID LEVEL.
References Cited (Backward Citations)
US2739030A
Cited
US2957315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |