US3085275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doctor blade and holder
Assignee: Individual
•
Filing: 1961-04-12
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Granted: 1963-04-16
•
Expires: 1981-04-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
D; D21; D21G; D21G3/00; D21G3/005; B; B41; B41F; B41F9/00; B41F9/06; B41F9/08; B41F9/10; B41F9/1036; B41F9/1045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A DOCTOR BLADE HOLDER COMPRISING A MAIN BAR, A SECONDARY BAR, EACH OF SAID BARS HAVING A LONGITUDINAL AXIS AND A FRONT PORTION AND A REAR PORTION, SAID AXES BEING PARALLEL, ONE OF SAID BARS HAVING A KEY-WAY TO RECEIVE A KEYED DOCTOR BLADE ASSEMBLY INCLUDING A DOCTOR BLADE AND WITH THE BLADE EDGE IN FRONT OF THE FRONT PORTIONS OF SAID BARS, SAID KEY-WAY EXTENDING SUBSTANTIALLY THE ENTIRE LENGTH OF SAID ONE BAR FOR THE INSERTION OF SAID DOCTOR BLADE FROM ONE END OF SAID KEY-WAY AND SAID BARS, MEANS FOR HOLDING SAID BARS SO THAT ONE MAY ROCK WITH RESPECT TO THE OTHER AGAINST A FULCRUM BETWEEN THE FRONT AND REAR PORTIONS OF SAID BARS, MEANS SELECTIVELY FOR EXERTING A FORCE OF SEPARATION BETWEEN SAID REAR PORTIONS AND FOR RELEASING SAID FORCE, WHEREBY WHEN SAID FORCE IS EXERTED A DOCTOR BLADE KEYED IN PLACE IS GRASPED BETWEEN THE FRONT PORTIONS OF SAID BARS FOR DOCTOR BLADE OPERATION IN SAID HOLDER, AND WHEREBY WHEN SAID FORCE IS RELEASED, THE DOCTOR BLADE MAY BE FREELY SLIDABLY WITHDRAWN OR INSERTED IN PLACE FROM SAID ONE END.
Claim 2
Dependent Claim
185 words
A DOCTOR BLADE HOLDER COMPRISING A MAIN BAR, A SECONDARY BAR, EACH OF SAID BARS HAVING A LONGITUDINAL AXIS AND A FRONT PORTION AND A REAR PORTION, SAID AXES BEING PARALLEL, ONE OF SAID BARS HAVING A KEY-WAY TO RECEIVE A KEYED DOCTOR BLADE ASSEMBLY INCLUDING A DOCTOR BLADE AND WITH THE BLADE EDGE IN FRONT OF THE FRONT PORTIONS OF SAID BARS, SAID KEY-WAY EXTENDING SUBSTANTIALLY THE ENTIRE LENGTH OF SAID ONE BAR FOR THE INSERTION OF SAID DOCTOR BLADE FROM ONE END OF SAID KEY-WAY AND SAID BARS, MEANS FOR HOLDING SAID BARS SO THAT ONE MAY ROCK WITH RESPECT TO THE OTHER AGAINST A FULCRUM BETWEEN THE FRONT AND REAR PORTIONS OF SAID BARS, MEANS SELECTIVELY FOR EXERTING A FORCE OF SEPARATION BETWEEN SAID REAR PORTIONS AND FOR RELEASING SAID FORCE, WHEREBY WHEN SAID FORCE IS EXERTED A DOCTOR BLADE KEYED IN PLACE IS GRASPED BETWEEN THE FRONT PORTIONS OF SAID BARS FOR DOCTOR BLADE OPERATION IN SAID HOLDER, AND WHEREBY WHEN SAID FORCE IS RELEASED, THE DOCTOR BLADE MAY BE FREELY SLIDABLY WITHDRAWN OR INSERTED IN PLACE FROM SAID ONE END.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |