Patent US3171233A successfully refreshed from Google Patents.
US3171233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for forming a scalloped edge on doctor blades
Assignee: Individual
•
Filing: 1962-12-21
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Granted: 1965-03-02
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gregory W Doll
- 👤 Brendan L Doll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:04
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
GRINDING APPARATUS FOR FORMING A SCALLOPED EDGE ON AN ELONGATE DOCTOR BLADE AND THE LIKE COMPRISING (A) MEANS FOR SUPPORTING THE DOCTOR BLADE, (B) FIRST GRINDING MEANS DISPOSED ADJACENT SAID SUPPORTING MEANS AND ENGAGEABLE WITH ONE EDGE OF THE DOCTOR BLADE FOR GRINDING A SMOOTH UNIFORM SURFACE THEREON, (C) SECOND GRINDING MEANS DISPOSED ADJACENT SAID SUPPORTING MEANS AND INTERMITTENTLY ENGAGEABLE WITH THE GROUND EDGE OF THE DOCTOR BLADE TO FORM UNIFORMLY AND CLOSELY SPACED DEPRESSIONS THEREIN TO FORM A SCALLOPED EDGE, AND (D) MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN SAID DOCTOR BLADE SUPPORTING MEANS AND SAID FIRST AND SECOND GRINDING MEANS AND BEING OPERATIVELY CONNECTED TO SAID SECOND GRINDING MEANS FOR INTERMITTENTLY MOVING SAID SECOND GRINDING MEANS INTO ENGAGEMENT WITH THE EDGE OF THE DOCTOR BLADE.
References Cited (Backward Citations)
US1435514A
Cited
US1766839A
Cited
US1902022A
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US2002812A
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US3036408A
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US3114989A
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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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |