US2700467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reducing precious metals
Assignee: Individual
•
Filing: 1953-05-11
•
Granted: 1955-01-25
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Harry W Dorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A CENTRIFUGAL SEPARATOR COMPRISING AN ELONGATED CYLINDER HAVING SEMICYLINDRICAL SECTIONS RELEASABLY UNITED; AN ANNULAR SLEEVE DISPOSED WITHIN THE CYLINDER; SAID SLEEVE HAVING AN INWARDLY DISPOSED ANNULAR RIDGE DEFINING COMPARTMENTS; MERCURY COATING THE INNER FACE OF SAID SLEEVE; OUTWARDLY EXTENDING ANNULAR FLANGES ON THE MARGINAL ENDS OF SAID CYLINDER AND SLEEVE; END CAPS SECURED IN CLOSING RELATION TO THE ENDS OF THE CYLINDER AND CLAMPING SAID FLANGES; AND INLET AND OUTLET PIPES COMMUNICATING WITH THE CYLINDER THROUGH SAID END CAPS.
Claim 2
Dependent Claim
79 words
A CENTRIFUGAL SEPARATOR COMPRISING AN ELONGATED CYLINDER HAVING SEMICYLINDRICAL SECTIONS RELEASABLY UNITED; AN ANNULAR SLEEVE DISPOSED WITHIN THE CYLINDER; SAID SLEEVE HAVING AN INWARDLY DISPOSED ANNULAR RIDGE DEFINING COMPARTMENTS; MERCURY COATING THE INNER FACE OF SAID SLEEVE; OUTWARDLY EXTENDING ANNULAR FLANGES ON THE MARGINAL ENDS OF SAID CYLINDER AND SLEEVE; END CAPS SECURED IN CLOSING RELATION TO THE ENDS OF THE CYLINDER AND CLAMPING SAID FLANGES; AND INLET AND OUTLET PIPES COMMUNICATING WITH THE CYLINDER THROUGH SAID END CAPS.
Claim 3
Dependent Claim
29 words
A CENTRIFUGAL SEPARATOR COMPRISING A PAIR OF INTERCOMMUNICATING CENTRIFUGES, ONE CONTAINING MERCURY FOR AMALGAMATION AND THE OTHER CONTAINING A FABRIC SLEEVE FOR CONFINING AMALGAM ESCAPED FROM THE FIRST CENTRIFUGE.
Claim 4
Dependent Claim
29 words
A CENTRIFUGAL SEPARATOR COMPRISING A PAIR OF INTERCOMMUNICATING CENTRIFUGES, ONE CONTAINING MERCURY FOR AMALGAMATION AND THE OTHER CONTAINING A FABRIC SLEEVE FOR CONFINING AMALGAM ESCAPED FROM THE FIRST CENTRIFUGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |