Patent US3307789A successfully refreshed from Google Patents.
US3307789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic spraying of two components
Assignee: Berger Jenson and Nicholson Ltd
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Filing: 1964-01-08
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Granted: 1967-03-07
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Expires: 1984-01-08
Abstract
No abstract record available.
Inventors
- 👤 Clark Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/10; B05B3/1057; B05B5/00; B05B5/025; B05B5/04; B05B5/0403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
AN APPARATUS FOR FORMING A SPRAY OF TWO REACTIVE COMPONENTS OF A SURFACE COATING COMPOSITION AND WHICH IS ADAPTED TO BE USED IN AN ELECTROSTATIC SPRAY APPARATUS, SAID APPARATUS COMPRISING A DISC, A HOLLOW ROTATING SHAFT ON WHICH SAID DISC IS MOUNTED, MEANS COUPLED TO SAID SHAFT FOR DRIVING SAID SHAFT, SAID SHAFT HAVING A DELIVERY ORIFICE ADJACENT THE UPPER SURFACE OF SAID DISC FOR DELIVERING A STREAM OF ONE COMPONENT OF THE SURFACE COATING COMPOSITION BEING FED THROUGH THE HOLLOW SHAFT TO THE UPPER SURFACE OF SAID DISC, A CIRCULAR TROUGH MOUNTED COAXIALLY WITH SAID DISC AND HAVING AN INNER EDGE IN RUBBING ENGAGEMENT WITH THE UNDER SIDE OF SAID DISC AND HAVING AN OUTER EDGE SPACED FROM THE UNDER SIDE OF SAID DISC A DISTANCE SUFFICIENT TO ALLOW THE SECOND COMPONENT OF THE SURFACE COATING COMPOSITION TO FLOW IN A THIN LAYER FROM SAID CIRCULAR TROUGH ONTO THE UNDER SIDE OF SAID DISC, A CONDUIT OPENING INTO SAID TROUGH FOR FEEDING THE SECOND COMPONENT TO SAID TROUGH, AND FEED MEANS COUPLED TO SAID CONDUIT AND SAID HOLLOW SHAFT FOR FEEDING ONE OF THE TWO COMPONENTS TO SAID HOLLOW SHAFT AND SEPARATELY FEEDING THE OTHER COMPONENT TO SAID CONDUIT AND SAID CIRCULAR TROUGH.
Claim 2
Independent Claim
204 words
AN APPARATUS FOR FORMING A SPRAY OF TWO REACTIVE COMPONENTS OF A SURFACE COATING COMPOSITION AND WHICH IS ADAPTED TO BE USED IN AN ELECTROSTATIC SPRAY APPARATUS, SAID APPARATUS COMPRISING A DISC, A HOLLOW ROTATING SHAFT ON WHICH SAID DISC IS MOUNTED, MEANS COUPLED TO SAID SHAFT FOR DRIVING SAID SHAFT, SAID SHAFT HAVING A DELIVERY ORIFICE ADJACENT THE UPPER SURFACE OF SAID DISC FOR DELIVERING A STREAM OF ONE COMPONENT OF THE SURFACE COATING COMPOSITION BEING FED THROUGH THE HOLLOW SHAFT TO THE UPPER SURFACE OF SAID DISC, A CIRCULAR TROUGH MOUNTED COAXIALLY WITH SAID DISC AND HAVING AN INNER EDGE IN RUBBING ENGAGEMENT WITH THE UNDER SIDE OF SAID DISC AND HAVING AN OUTER EDGE SPACED FROM THE UNDER SIDE OF SAID DISC A DISTANCE SUFFICIENT TO ALLOW THE SECOND COMPONENT OF THE SURFACE COATING COMPOSITION TO FLOW IN A THIN LAYER FROM SAID CIRCULAR TROUGH ONTO THE UNDER SIDE OF SAID DISC, A CONDUIT OPENING INTO SAID TROUGH FOR FEEDING THE SECOND COMPONENT TO SAID TROUGH, AND FEED MEANS COUPLED TO SAID CONDUIT AND SAID HOLLOW SHAFT FOR FEEDING ONE OF THE TWO COMPONENTS TO SAID HOLLOW SHAFT AND SEPARATELY FEEDING THE OTHER COMPONENT TO SAID CONDUIT AND SAID CIRCULAR TROUGH.
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |