US2992142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic cleaning method
Assignee: Detrex Corp
•
Filing: 1958-01-17
•
Granted: 1961-07-11
•
Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Kearney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B08B3/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD OF CLEANING A WORK OBJECT COMPRISING THE STEPS OF IMMERSING THE WORK OBJECT IN A CHLORINATED HYDROCARBON LIQUID, PIEZOELECTRICALLY CREATING A BEAM OF ULTRASONIC WAVES HAVING A FREQUENCY IN THE RANGE OF FROM 200 TO 100 KILOCYCLES BY ELECTRICALLY ENERGIZING PIEZOELECTRIC MEANS WHICH IS SUBMERGED IN SAID CHLORINATED HYDROCARBON LIQUID, SAID PIEZOELECTRIC MEANS BEING OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, FOCUSING SAID BEAM OF ULTRASONIC WAVES TOWARD A FOCUS POINT, AND MOVING SAID WORK OBJECT THROUGH SAID LIQUID BETWEEN SAID PIEZOELECTRIC MEANS AND SAID FOCUS POINT, THEREBY TO STRIKE SAID WORK OBJECT WITH SAID BEAM WHILE SAID BEAM IS CONVERGING TOWARD THE FOCUS POINT.
Claim 2
Independent Claim
109 words
A METHOD OF CLEANING A WORK OBJECT COMPRISING THE STEPS OF IMMERSING THE WORK OBJECT IN A CHLORINATED HYDROCARBON LIQUID, PIEZOELECTRICALLY CREATING A BEAM OF ULTRASONIC WAVES HAVING A FREQUENCY IN THE RANGE OF FROM 200 TO 100 KILOCYCLES BY ELECTRICALLY ENERGIZING PIEZOELECTRIC MEANS WHICH IS SUBMERGED IN SAID CHLORINATED HYDROCARBON LIQUID, SAID PIEZOELECTRIC MEANS BEING OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, FOCUSING SAID BEAM OF ULTRASONIC WAVES TOWARD A FOCUS POINT, AND MOVING SAID WORK OBJECT THROUGH SAID LIQUID BETWEEN SAID PIEZOELECTRIC MEANS AND SAID FOCUS POINT, THEREBY TO STRIKE SAID WORK OBJECT WITH SAID BEAM WHILE SAID BEAM IS CONVERGING TOWARD THE FOCUS POINT.
References Cited (Backward Citations)
US2650872A
Cited
US2784119A
Cited
US2854012A
Cited
US2802476A
Cited
US2814575A
Cited
US2845077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |