Patent US3281022A successfully refreshed from Google Patents.
US3281022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding cup injector
Assignee: Individual
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Filing: 1965-10-20
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Granted: 1966-10-25
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jarnett Frank D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:10
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
IN A MECHANISM TO INTRODUCE ADDITIVES IN VARIOUS FORMS INTO A STREAM OF HIGHLY PRESSURIZED FLUID FLOWING IN A GIVEN DIRECTION IN A CONDUIT, WITH A LATERAL PASSAGEWAY INTERSECTING THE CONDUIT, WHEREIN A FEED BAR FORMED WITH A DIAMETRICAL FEED PASSAGE THERETHROUGH IS LONGITUDINALLY SLIDABLE THROUGH SURROUNDING ANNULAR SEALING MEANS IN THE LATERAL PASSAGEWAY BETWEEN A LOADING POSITION WITH THE FEED PASSAGE EXPOSED OUTSIDE OF THE LATERAL PASSAGEWAY AND AN UNLOADING POSITION WITH THE FEED PASSAGE ALIGNED WITH THE INTERIOR OF THE CONDUIT FOR FLOW OF THE FLUID STREAM THERETHROUGH, THE IMPROVEMENT COMPRISING: CYLINDRICAL MEANS COOPERATIVE WITH THE LATERAL PASSAGEWAY AND SURROUNDING THE LATERAL PASSAGEWAY BETWEEN THE ANNULAR SEALING MEANS AND THE OUTER END OF THE LATERAL PASSAGEWAY TO FORM AN ANNULAR EXPANSION CHAMBER RADIALLY OUTWARDLY OF THE INTERIOR OF THE LATERAL PASSAGEWAY, SAID EXPANSION CHAMBER HAVING AN INNER WALL APERTURED FOR COMMUNICATION WITH INTERIOR OF THE LATERAL PASSAGEWAY AND HAVING AN OUTER WALL APERTURED FOR COMMUNICATION WITH THE AMBIENT ATMOSPHERE TO CAUSE PRESSURIZED FLUID TAPPED IN THE FEED PASSAGED OF THE FEED BAR TO BE VENTED TO THE ATMOSPHERE THROUGH THE EXPANSION CHAMBER AFTER THE FEED PASSAGE REACHES THE ANNULAR SEALING MEANS AND BEFORE THE FEED PASSAGE REACHES THE OUTER END OF THE TRANSVERSE PASSAGEWAY.
Claim 2
Dependent Claim
206 words
IN A MECHANISM TO INTRODUCE ADDITIVES IN VARIOUS FORMS INTO A STREAM OF HIGHLY PRESSURIZED FLUID FLOWING IN A GIVEN DIRECTION IN A CONDUIT, WITH A LATERAL PASSAGEWAY INTERSECTING THE CONDUIT, WHEREIN A FEED BAR FORMED WITH A DIAMETRICAL FEED PASSAGE THERETHROUGH IS LONGITUDINALLY SLIDABLE THROUGH SURROUNDING ANNULAR SEALING MEANS IN THE LATERAL PASSAGEWAY BETWEEN A LOADING POSITION WITH THE FEED PASSAGE EXPOSED OUTSIDE OF THE LATERAL PASSAGEWAY AND AN UNLOADING POSITION WITH THE FEED PASSAGE ALIGNED WITH THE INTERIOR OF THE CONDUIT FOR FLOW OF THE FLUID STREAM THERETHROUGH, THE IMPROVEMENT COMPRISING: CYLINDRICAL MEANS COOPERATIVE WITH THE LATERAL PASSAGEWAY AND SURROUNDING THE LATERAL PASSAGEWAY BETWEEN THE ANNULAR SEALING MEANS AND THE OUTER END OF THE LATERAL PASSAGEWAY TO FORM AN ANNULAR EXPANSION CHAMBER RADIALLY OUTWARDLY OF THE INTERIOR OF THE LATERAL PASSAGEWAY, SAID EXPANSION CHAMBER HAVING AN INNER WALL APERTURED FOR COMMUNICATION WITH INTERIOR OF THE LATERAL PASSAGEWAY AND HAVING AN OUTER WALL APERTURED FOR COMMUNICATION WITH THE AMBIENT ATMOSPHERE TO CAUSE PRESSURIZED FLUID TAPPED IN THE FEED PASSAGED OF THE FEED BAR TO BE VENTED TO THE ATMOSPHERE THROUGH THE EXPANSION CHAMBER AFTER THE FEED PASSAGE REACHES THE ANNULAR SEALING MEANS AND BEFORE THE FEED PASSAGE REACHES THE OUTER END OF THE TRANSVERSE PASSAGEWAY.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |