US3237777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desander
Assignee: Individual
•
Filing: 1962-06-19
•
Granted: 1966-03-01
•
Expires: 1982-06-19
Abstract
No abstract record available.
Inventors
- 👤 Delmont D Brown
- 👤 George W Lown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:28
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
APPARATUS FOR REMOVING ABRASIVE, SOLID PARTICLES FROM LIQUIDS WHICH COMPRISES A METAL HEAD CASING, SAID HEAD CASING INCLUDING A HOLLOW, CYLINDRICAL PORTION AND A RECTANGULA, HOLLOW EXTENSION PROJECTING TANGENTIALLY FROM SAID CYLINDRICAL PORTION AND COMMUNICATING AT ITS INNER END WITH SAID CYLINDRICAL PORTION, SAID CYLINDRICAL PORTION AND SAID EXTENSION BEING OPEN AT THE BOTTOMS THEREOF, SAID CYLINDRICAL PORTION HAVING A TOP WALL WITH A CENTRAL OPENING THEREIN, SAID EXTENSION HAVING A FRONT WALL WITH AN OPENING THEREON, A REMOVABLE, CYLINDRICAL LINER OF AN ABRASION-RESISTANT SYNTHETIC RESIN MOUNTED IN SAID HEAD CASING, SAID LINER BEING OPEN AT THE BOTTOM AND HAVING A TOP WALL WITH A CENTRAL OPENING THEREIN, A RECTANGULAR BLOCK MADE OF SAID SYNTHETIC RESIN AND PROJECTING TANGENTIALLY FROM SAID CYLINDRICAL LINER, SAID BLOCK BEING SEATED IN SAID RECTANGULAR, HOLLOW EXTENSION AND HAVING AN AXIAL PASSAGE FOR ADMITTING A LIQUID UNDER PRESSURE TANGENTIALLY AGAINST THE INNER SIDE OF THE CYLINDRICAL WALL OF SAID LINER, A PLATE REMOVABLY MOUNTED OVER SAID OPENING OF SAID FRONT WALL OF SAID HOLLOW EXTENSION, SAID PLATE HAVING A
Claim 2
Dependent Claim
174 words
APPARATUS FOR REMOVING ABRASIVE, SOLID PARTICLES FROM LIQUIDS WHICH COMPRISES A METAL HEAD CASING, SAID HEAD CASING INCLUDING A HOLLOW, CYLINDRICAL PORTION AND A RECTANGULA, HOLLOW EXTENSION PROJECTING TANGENTIALLY FROM SAID CYLINDRICAL PORTION AND COMMUNICATING AT ITS INNER END WITH SAID CYLINDRICAL PORTION, SAID CYLINDRICAL PORTION AND SAID EXTENSION BEING OPEN AT THE BOTTOMS THEREOF, SAID CYLINDRICAL PORTION HAVING A TOP WALL WITH A CENTRAL OPENING THEREIN, SAID EXTENSION HAVING A FRONT WALL WITH AN OPENING THEREON, A REMOVABLE, CYLINDRICAL LINER OF AN ABRASION-RESISTANT SYNTHETIC RESIN MOUNTED IN SAID HEAD CASING, SAID LINER BEING OPEN AT THE BOTTOM AND HAVING A TOP WALL WITH A CENTRAL OPENING THEREIN, A RECTANGULAR BLOCK MADE OF SAID SYNTHETIC RESIN AND PROJECTING TANGENTIALLY FROM SAID CYLINDRICAL LINER, SAID BLOCK BEING SEATED IN SAID RECTANGULAR, HOLLOW EXTENSION AND HAVING AN AXIAL PASSAGE FOR ADMITTING A LIQUID UNDER PRESSURE TANGENTIALLY AGAINST THE INNER SIDE OF THE CYLINDRICAL WALL OF SAID LINER, A PLATE REMOVABLY MOUNTED OVER SAID OPENING OF SAID FRONT WALL OF SAID HOLLOW EXTENSION, SAID PLATE HAVING A
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |