US2831785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jfzgz
Assignee: —
•
Filing: —
•
Granted: 1958-04-22
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Expires: 1975-04-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:44
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A METHOD OF CLEANING A WORK OBJECT COMPRISING IMMERSING THE WORK OBJECT IN A CHLORINATED HYDROCARBON LIQUID, PIEZOELECTRICALLY CREATING ULTRASONIC WAVES BY ELECTRICALLY EMERGIZING PIEXOELECTRIC MEANS SUBMERGED IN SAID CHLORINATED HYDROCARBON LIQUID AT A ZONE WITHIN SAID CHLORINATED HYDROCARBON LIQUID, SAID PIEZOELECTRIC MEANS BEING OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, CAUSING SAID ULTRASONIC WAVES TO DIVERGE, FOCUSING THE WAVES PRIOR TO DIVERGENCE, DIRECTING SAID WAVES TOWARD THE WORK OBJECT, AND STRIKING SAID WORK OBJECT WITH SAID WAVES WHILE SAID WAVES ARE DIVERGING.
Claim 2
Independent Claim
85 words
A METHOD OF CLEANING A WORK OBJECT COMPRISING IMMERSING THE WORK OBJECT IN A CHLORINATED HYDROCARBON LIQUID, PIEZOELECTRICALLY CREATING ULTRASONIC WAVES BY ELECTRICALLY EMERGIZING PIEXOELECTRIC MEANS SUBMERGED IN SAID CHLORINATED HYDROCARBON LIQUID AT A ZONE WITHIN SAID CHLORINATED HYDROCARBON LIQUID, SAID PIEZOELECTRIC MEANS BEING OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, CAUSING SAID ULTRASONIC WAVES TO DIVERGE, FOCUSING THE WAVES PRIOR TO DIVERGENCE, DIRECTING SAID WAVES TOWARD THE WORK OBJECT, AND STRIKING SAID WORK OBJECT WITH SAID WAVES WHILE SAID WAVES ARE DIVERGING.
Claim 3
Dependent Claim
107 words
APPARATUS FOR CLEANING A WORK OBJECT COMPRISING A WELL, SAID WELL CONTAINING A CLEANING LIQUID, A PAIR OF TRANSDUCERS MOUNTED IN SUBSTANTIALLY THE SAME HORIZONTAL PLANE BELOW THE SURFACE OF SAID LIQUID, SUPPORT MEANS SUPPORTING THE WORK OBJECT, BELOW THE SURFACE OF SAID LIQUID AND SPACED FROM THE TRANSDUCERS, EACH OF SAID TRANSDUCERS BEING CURVILINEAR IN CROSS SECTIO TO FOCUS ITS ULTRASONIC WAVES AT A POINT BETWEEN SAID TRANSDUCER AND SAID WORK OBJECT, SAID TRANSDUCERS BEING SPACED APART FROM ONE ANOTHER IN SAID HORIZONTAL PLANE AND THEREBY POSITIONED SO THAT ULTRASONIC WAVES FROM ONE OVERLAP THE WAVES FROM THE OTHER BETWEEN SAID TRANSDUCERS AND SAID WORK OBJECT.
Claim 4
Dependent Claim
107 words
APPARATUS FOR CLEANING A WORK OBJECT COMPRISING A WELL, SAID WELL CONTAINING A CLEANING LIQUID, A PAIR OF TRANSDUCERS MOUNTED IN SUBSTANTIALLY THE SAME HORIZONTAL PLANE BELOW THE SURFACE OF SAID LIQUID, SUPPORT MEANS SUPPORTING THE WORK OBJECT, BELOW THE SURFACE OF SAID LIQUID AND SPACED FROM THE TRANSDUCERS, EACH OF SAID TRANSDUCERS BEING CURVILINEAR IN CROSS SECTIO TO FOCUS ITS ULTRASONIC WAVES AT A POINT BETWEEN SAID TRANSDUCER AND SAID WORK OBJECT, SAID TRANSDUCERS BEING SPACED APART FROM ONE ANOTHER IN SAID HORIZONTAL PLANE AND THEREBY POSITIONED SO THAT ULTRASONIC WAVES FROM ONE OVERLAP THE WAVES FROM THE OTHER BETWEEN SAID TRANSDUCERS AND SAID WORK OBJECT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |