US3128055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refiner plate
Assignee: Bauer Brothers Co
•
Filing: 1961-05-31
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Granted: 1964-04-07
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Donald P Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/30; D21D1/306; B; B02; B02C; B02C7/00; B02C7/11; B02C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A REFINER PLATE FOR APPLICATION TO A BACKING PLATE OF A DISC REFINER OR THE LIKE HAVING ON ONE FACE A WORKING SURFACE AND, ON THE OPPOSITE FACE, MEANS PROJECTED FOR FIRM ABUTMENT THEREOF TO A BACKING PLATE, SAID MEANS DEFINING RECESSES HAVING A FILLING OF CHEMICALLY INERT, COMPRESSIBLE SUBSTANCE NORMALLY ARRANGED TO PROJECT THEREFROM AND FORM A SEAL WITH THE BACKING PLATE ON APPLICATION OF THE REFINER PLATE THERETO, SAID SEALING SUBSTANCE BEING OPERATIVE TO PREVENT SIFTING AND BUILD UP OF THE MATERIAL BEING REFINED TO THE REAR OF THE REFINER PLATE.
Claim 2
Dependent Claim
93 words
A REFINER PLATE FOR APPLICATION TO A BACKING PLATE OF A DISC REFINER OR THE LIKE HAVING ON ONE FACE A WORKING SURFACE AND, ON THE OPPOSITE FACE, MEANS PROJECTED FOR FIRM ABUTMENT THEREOF TO A BACKING PLATE, SAID MEANS DEFINING RECESSES HAVING A FILLING OF CHEMICALLY INERT, COMPRESSIBLE SUBSTANCE NORMALLY ARRANGED TO PROJECT THEREFROM AND FORM A SEAL WITH THE BACKING PLATE ON APPLICATION OF THE REFINER PLATE THERETO, SAID SEALING SUBSTANCE BEING OPERATIVE TO PREVENT SIFTING AND BUILD UP OF THE MATERIAL BEING REFINED TO THE REAR OF THE REFINER PLATE.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |