Patent US3142830A successfully refreshed from Google Patents.
US3142830A
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Desiccant container with desiccant saturation indicator
Assignee: ALPHA RES AND DEV Inc
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Filing: 1961-07-20
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Granted: 1964-07-28
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Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 Robert L Patrick
- 👤 Carmie T Esposito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:51
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/331; B; B01; B01L; B01L1/00; B01L1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
A DEVICE COMPRISING A CONTAINER HAVING PERFORATED SIDES AND AN IMPERFORATE BOTTOM AND AN ANNULAR SPACE THEREIN FOR DESICCANT MATERIALS, MEANS TO HOLD AND EXPOSE SAID DESICCANT MATERIALS AND MEANS TO CATCH AND RETAIN MOISTURE DESCENDING FROM SAID DESICCANT, A COVER FOR SAID CONTAINER, A PAIR OF SPACED ELECTRODES POSITIONED WITHIN SAID CONTAINER, THE LOWER ENDS OF SAID ELECTRODES BEING DISPOSED CLOSE TO THE BOTTOM OF SAID CONTAINER IN WHICH EXCESS MOISTURE MAY ACCUMULATE TO FORM AN ELECTRICAL CONDUCTING MEDIUM, THE OTHER ENDS OF SAID ELECTRODES BEING ADAPTED FOR CONNECTION THROUGH SAID CONTAINER COVER TO AN EXTERNAL SOURCE OF ALTERNATING CURRENT AND AN ELECTRICALLY ACTUATED ALARM MEANS, WHEREBY CLOSURE OF THE ELECTRICAL CIRCUIT BY FORMATION OF SAID CONDUCTING MEDIUM BRIDGING SAID SPACED ELECTRODES RESULTS IN ACTUATION OF SAID ALARM MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |