US3222798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dryer sensing device
Assignee: Controls Company of America
•
Filing: 1962-11-26
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Granted: 1965-12-14
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Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 James M Thornberry
- 👤 John E Maas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/14; D06F34/18; D06F2103/00; D06F2103/02; D06F2103/08; D06F2103/10; D06F58/00; D06F58/32; D06F58/34; D06F58/36; D06F58/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A DRYER HAVING A DRUM ROTATABLE WITHIN A HOUSING, AN ELECTRICALLY CONDUCTIVE SENSOR INSULATED FROM AND MOUNTED ON THE DRUM FOR ROTATION THEREWITH AND HAVING A SENSING SURFACE EXPOSED TO THE DRUM INTERIOR AND A CONTACT SURFACE LYING WITHIN A SMALL ARC, MEANS CARRIED IN THE HOUSING AND PERIODICALLY ENGAGED BY THE CONTACT SURFACE OF THE SENSOR AS THE DRUM ROTATES TO ALTERNATELY IMPRESS A FIXED CHARGE ON THE SENSOR AND TO SENSE THE RESIDUAL CHARGE ON THE SENSOR AFTER THE DRUM HAS ROTATED SUBSEQUENT TO IMPRESSION OF THE CHARGE TO ALLOW LEAKAGE FROM THE SENSOR AT A RATE DEPENDENT UPON THE MOISTURE CONTENT OF THE MATERIAL BEING DRIED, SAID SENSOR BEING MECHANICALLY AND ELECTRICALLY ISOLATED FROM SAID MEANS DURING THE INTERVAL BETWEEN IMPRESSING AND SENSING THE CHARGE ON THE SENSOR, AND MEANS CONNECTED WITH SAID LAST-MENTIONED MEANS AND RESPONSIVE TO A SENSED RESIDUAL CHARGE OF PREDETERMINED VALUE TO EFFECT A DRYER CONTROL FUNCTION.
Claim 2
Dependent Claim
155 words
IN A DRYER HAVING A DRUM ROTATABLE WITHIN A HOUSING, AN ELECTRICALLY CONDUCTIVE SENSOR INSULATED FROM AND MOUNTED ON THE DRUM FOR ROTATION THEREWITH AND HAVING A SENSING SURFACE EXPOSED TO THE DRUM INTERIOR AND A CONTACT SURFACE LYING WITHIN A SMALL ARC, MEANS CARRIED IN THE HOUSING AND PERIODICALLY ENGAGED BY THE CONTACT SURFACE OF THE SENSOR AS THE DRUM ROTATES TO ALTERNATELY IMPRESS A FIXED CHARGE ON THE SENSOR AND TO SENSE THE RESIDUAL CHARGE ON THE SENSOR AFTER THE DRUM HAS ROTATED SUBSEQUENT TO IMPRESSION OF THE CHARGE TO ALLOW LEAKAGE FROM THE SENSOR AT A RATE DEPENDENT UPON THE MOISTURE CONTENT OF THE MATERIAL BEING DRIED, SAID SENSOR BEING MECHANICALLY AND ELECTRICALLY ISOLATED FROM SAID MEANS DURING THE INTERVAL BETWEEN IMPRESSING AND SENSING THE CHARGE ON THE SENSOR, AND MEANS CONNECTED WITH SAID LAST-MENTIONED MEANS AND RESPONSIVE TO A SENSED RESIDUAL CHARGE OF PREDETERMINED VALUE TO EFFECT A DRYER CONTROL FUNCTION.
References Cited (Backward Citations)
US2045381A
Cited
GB877553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |