Patent US3285705A successfully refreshed from Google Patents.
US3285705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contactor with rotor and sector stators
Assignee: Shell USA Inc
•
Filing: 1963-05-22
•
Granted: 1966-11-15
•
Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Frederik J Zuiderweg
- 👤 Stemerding Steven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:28
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0434; B01F; B01F23/00; B01F23/40; B01F23/45; B01F23/453; B01F27/00; B01F27/80; B01F27/94; B01J; B01J19/00; B01J19/18; C10; C10G; C10G21/00; B01F35/00; B01F35/50; B01F35/53; B01F35/531; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00083; B01J2219/00184; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/00777; B01J2219/18; B01J2219/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A ROTOR CONTACTOR FOR CONTACTING AT LEAST TWO FLOWABLE PHASES WHICH COMPRISES: AN UPRIGHT, ELONGATED VESSEL HAVING VERTICALLY SPACED INLET AND OUTLET MEANS; UPRIGHT ROTOR MEANS CENTRALLY MOUNTED WITH SAID VESSEL SO AS TO DEFINE AN ANNULAR REGION BETWEEN SAID ROTOR MEANS AND THE INTERIOR SURFACE OF SAID VESSEL; A SERIES OF STATIONARY, FLAT RING SECTORS AFFIXED TO THE INTERIOR SURFACE OF SAID VESSEL IN SUBSTANTIALLY HORIZONTAL PLANES AT VERTICALLY SPACED POSITIONS BETWEEN SAID INLET AND OUTLET MEANS WITHIN SAID ANNULAR REGION, EACH OF SAID SECTORS HAVING A SECTOR ARC OF NOT MORE THAN 225*, EACH OF SAID SECTORS BEING IN POSITIONS THAT ARE ANGULARLY DISPLACED ONE FROM ANOTHER IN VERTICALLY DISPLACED HORIZONTAL SECTOR PLANES;
Claim 2
Dependent Claim
115 words
A ROTOR CONTACTOR FOR CONTACTING AT LEAST TWO FLOWABLE PHASES WHICH COMPRISES: AN UPRIGHT, ELONGATED VESSEL HAVING VERTICALLY SPACED INLET AND OUTLET MEANS; UPRIGHT ROTOR MEANS CENTRALLY MOUNTED WITH SAID VESSEL SO AS TO DEFINE AN ANNULAR REGION BETWEEN SAID ROTOR MEANS AND THE INTERIOR SURFACE OF SAID VESSEL; A SERIES OF STATIONARY, FLAT RING SECTORS AFFIXED TO THE INTERIOR SURFACE OF SAID VESSEL IN SUBSTANTIALLY HORIZONTAL PLANES AT VERTICALLY SPACED POSITIONS BETWEEN SAID INLET AND OUTLET MEANS WITHIN SAID ANNULAR REGION, EACH OF SAID SECTORS HAVING A SECTOR ARC OF NOT MORE THAN 225*, EACH OF SAID SECTORS BEING IN POSITIONS THAT ARE ANGULARLY DISPLACED ONE FROM ANOTHER IN VERTICALLY DISPLACED HORIZONTAL SECTOR PLANES;
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |