US3076990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary wiper
Assignee: Individual
•
Filing: 1962-03-23
•
Granted: 1963-02-12
•
Expires: 1982-03-23
Abstract
No abstract record available.
Inventors
- 👤 William R Dapprich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:20
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/56; B60S1/60; B60S1/04; B60S1/0494
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN AN AIR-DRIVEN WIPER FOR REMOVING DIRT FROM A SURFACE WHICH IS EXPOSED TO AIR CURRENTS; A SUPPORTING ELEMENT ADAPTED FOR ATTACHMENT TO THE APPROXIMATE CENTER OF THE SURFACE TO BE CLEANED; A FLEXIBLE CORD-LIKE MEMBER NON-ROTATABLY SECURED TO SAID SUPPORTING ELEMENT; A MULTI-VANED ELONGATE BRUSH SECURED TO SAID FLEXIBLE CORDLIKE MEMBER; THE OUTER PORTIONS OF THE VANES OF SAID ELONGATE MULTI-VANED BRUSH BEING OF SPIRAL FORMATION AND CURVED TO PROVIDE AN AIR-SCOOPING EFFECT; AND BRISTLES ON THE OUTER EDGES OF SAID VANES.
Claim 2
Dependent Claim
83 words
IN AN AIR-DRIVEN WIPER FOR REMOVING DIRT FROM A SURFACE WHICH IS EXPOSED TO AIR CURRENTS; A SUPPORTING ELEMENT ADAPTED FOR ATTACHMENT TO THE APPROXIMATE CENTER OF THE SURFACE TO BE CLEANED; A FLEXIBLE CORD-LIKE MEMBER NON-ROTATABLY SECURED TO SAID SUPPORTING ELEMENT; A MULTI-VANED ELONGATE BRUSH SECURED TO SAID FLEXIBLE CORDLIKE MEMBER; THE OUTER PORTIONS OF THE VANES OF SAID ELONGATE MULTI-VANED BRUSH BEING OF SPIRAL FORMATION AND CURVED TO PROVIDE AN AIR-SCOOPING EFFECT; AND BRISTLES ON THE OUTER EDGES OF SAID VANES.
References Cited (Backward Citations)
US2749568A
Cited
US2884656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |