US3085185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic cleaning apparatus
Assignee: Detrex Corp
•
Filing: 1959-05-12
•
Granted: 1963-04-09
•
Expires: 1979-05-12
Abstract
No abstract record available.
Inventors
- 👤 Jacke Stanley Emil
- 👤 John W Collison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:09
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238; B06B2201/00; B06B2201/50; B06B2201/55; B06B2201/70; B06B2201/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN ULTRASONIC CLEANING APPARATUS HAVING A WELL, A LIQUID CHLORINATED HYDROCARBON SOLVENT CONTAINED WITHIN SAID WELL, A PIEZOELECTRIC TRANSDUCER SUBMERGED IN THE SOLVENT OF THE WELL, AND MEANS FOR APPLYING A HIGHFREQUENCY VOLTAGE ACROSS SAID TRANSDUCER TO VIBRATE SAID TRANSDUCER AND TO GENERATE ULTRASONIC WAVES IN SAID SOLVENT; MEANS FOR OPERATING SAID TRANSDUCER AT HIGH TEMPERATURES EXCEEDING THE OTHERWISE SAFE TEMPERATURE LIMITS OF SAID TRANSDUCER MATERIAL, SAID LASTNAMED MEANS COMPRISING MEANS FOR APPLYING A HIGH DIRECT-CURRENT BIASING VOLTAGE ACROSS SAID TRANSDUCER; AND CONTROL MEANS COUPLED BOTH TO SAID DIRECT-CURRENT BIASING VOLTAGE MEANS AND ALSO TO SAID HIGH-FREQUENCY VOLTAGE ACROSS SAID TRANSDUCER UNLESS SAID DIRECT-CURRENT BIASING VOLTAGE EXCEEDS A SELECTED MINIMUM VALUE AND FOR REMOVING SAID HIGH-FREQUENCY VOLTAGE FROM SAID TRANSDUCER WHEN SAID DIRECT-CURRENT BIASING VOLTAGE FALLS BELOW A SELECTED MINIMUM VALUE.
Claim 2
Dependent Claim
131 words
IN ULTRASONIC CLEANING APPARATUS HAVING A WELL, A LIQUID CHLORINATED HYDROCARBON SOLVENT CONTAINED WITHIN SAID WELL, A PIEZOELECTRIC TRANSDUCER SUBMERGED IN THE SOLVENT OF THE WELL, AND MEANS FOR APPLYING A HIGHFREQUENCY VOLTAGE ACROSS SAID TRANSDUCER TO VIBRATE SAID TRANSDUCER AND TO GENERATE ULTRASONIC WAVES IN SAID SOLVENT; MEANS FOR OPERATING SAID TRANSDUCER AT HIGH TEMPERATURES EXCEEDING THE OTHERWISE SAFE TEMPERATURE LIMITS OF SAID TRANSDUCER MATERIAL, SAID LASTNAMED MEANS COMPRISING MEANS FOR APPLYING A HIGH DIRECT-CURRENT BIASING VOLTAGE ACROSS SAID TRANSDUCER; AND CONTROL MEANS COUPLED BOTH TO SAID DIRECT-CURRENT BIASING VOLTAGE MEANS AND ALSO TO SAID HIGH-FREQUENCY VOLTAGE ACROSS SAID TRANSDUCER UNLESS SAID DIRECT-CURRENT BIASING VOLTAGE EXCEEDS A SELECTED MINIMUM VALUE AND FOR REMOVING SAID HIGH-FREQUENCY VOLTAGE FROM SAID TRANSDUCER WHEN SAID DIRECT-CURRENT BIASING VOLTAGE FALLS BELOW A SELECTED MINIMUM VALUE.
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |