US2616820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory cleansing of objects
Assignee: Compagnie de Saint Gobain SA
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Filing: 1948-05-14
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Granted: 1952-11-04
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Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 Bourgeaux Maurice Marce Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:36
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE METHOD OF CLEANING AND PHOSPHATING A METAL OBJECT THAT INCLUDES THE STEP OF SUBJECTING THE OBJECT TO ELASTIC, MECHANICAL VIBRATIONS IN THE RANGE BETWEEN 16,000 AND 50,000 PERIODS PER SECOND IN CONTACT WITH PHOSPHORIC ACID SOLUTION.
Claim 2
Independent Claim
89 words
THE METHOD OF CLEANING A RIGID, IMPERVIOUS BODY OF AN ADHERING FOREGIN DEPOSIT THAT COMPRISES SUBJECTING SUCH BODY TO ELASTIC VIBRATIONS IN A CLEANING LIQUID, PROPAGATING THEMSELVES INSIDE OF SAID DEPOSIT AND REFLECTING THEMSELVES AT LEAST PARTIALLY TOWARDS THE INSIDE OF SAID DEPOSIT ON THE SURFACE TO WHICH THE DEPOSIT ADHERES, SAID VIBRATIONS HAVING A PERIODICITY CIRCA 20,000 PERIODS PER SECOND, THE VALUES OF THE FREQUENCY AND ENERGY OF SAID VIBRATIONS BEING CHOSEN SO AS TO CREATE INSIDE SAID DEPOSIT INSTANTANEOUS MECHANICAL STRAINS GREATER THAN THE RUPTURE LIMITS THEREOF.
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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) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |