Patent US3351350A successfully refreshed from Google Patents.
US3351350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure rod seal
Assignee: Beazer East Inc
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Filing: 1966-06-22
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Granted: 1967-11-07
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Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Paul R Shepler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:10
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16J15/185; Y; Y10; Y10S; Y10S277/00; Y10S277/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A DUAL STAGE HIGH PRESSURE SEAL ASSEMBLY FOR A ROD SORROUNDING BY A CAVITY DEFINED BY A HOUSING HAVING AN END PORTION OF REDUCED DIAMETER, COMPRISING: A FIRST STAGE THAT INCLUDES A SEAL RING HAVING AN INNER PORTION OF PLOYTETRAFLUROETHYLENE SURROUNDING BY AN OUTER PORTION OF ELASTOMERIC MATEIAL, SAID SEAL RING POSTIONED AROUND SAID ROD AND WITHIN SAID CAVITY AND ADJACENT SAID HOUSING END PORTION OF REDUCED DIAMETER; AN INNER TUBULAR CASING HAVING AN END PORTION OF REDUCED DIAMETER SECURED WITHIN SAID CAVITY AND AROUND SAID ROD AND URGING SAID SEAL RING TOWARD SAID HOUSING END PORTION TO SQUEEZE SAID ELASTOMERIC MATERIAL WHEREBY SAID INNER PORTION OF PLOYTETRAFLUOROETHYLENE IS COMPRESSED INTO SEALING ENGAGEMENT AGAINST SAID ROD AND SAID HOUSING AT ONE UNIT PRESSURE; A SECOND STAGE HAVING A PLURALITY OF V-SHAPED RINGS AROUND SAID ROD AND WITHIN SAID TUBULAR CASING ENGAGING SAID ROD AND SAID CASING END PORTION OF REDUCED DIAMETER; BIASING MEANS URGING SAID CASING TOWARDS SAID SEAL RING A PREDETERMINED AMOUNT AND URGING SAID V-SHAPED RINGS AGAINST SAID CASING END PORTION ANOTHER PREDETERMINED AMOUNT WHEREBY SAID SEAL RING IS PRESSED INTO SEALING ENGAGEMENT WITH SAID RING IS PRESSED INTO SURE AND SAID V-SHAPED RINGES ARE PRESSED INTO SEALING ENGAGEMENT WITH SAID ROD AT A SEOND UNIT PRESSURE LESS THAN SAID FIRST UNIT PRESSURE; AND
Claim 2
Dependent Claim
216 words
A DUAL STAGE HIGH PRESSURE SEAL ASSEMBLY FOR A ROD SORROUNDING BY A CAVITY DEFINED BY A HOUSING HAVING AN END PORTION OF REDUCED DIAMETER, COMPRISING: A FIRST STAGE THAT INCLUDES A SEAL RING HAVING AN INNER PORTION OF PLOYTETRAFLUROETHYLENE SURROUNDING BY AN OUTER PORTION OF ELASTOMERIC MATEIAL, SAID SEAL RING POSTIONED AROUND SAID ROD AND WITHIN SAID CAVITY AND ADJACENT SAID HOUSING END PORTION OF REDUCED DIAMETER; AN INNER TUBULAR CASING HAVING AN END PORTION OF REDUCED DIAMETER SECURED WITHIN SAID CAVITY AND AROUND SAID ROD AND URGING SAID SEAL RING TOWARD SAID HOUSING END PORTION TO SQUEEZE SAID ELASTOMERIC MATERIAL WHEREBY SAID INNER PORTION OF PLOYTETRAFLUOROETHYLENE IS COMPRESSED INTO SEALING ENGAGEMENT AGAINST SAID ROD AND SAID HOUSING AT ONE UNIT PRESSURE; A SECOND STAGE HAVING A PLURALITY OF V-SHAPED RINGS AROUND SAID ROD AND WITHIN SAID TUBULAR CASING ENGAGING SAID ROD AND SAID CASING END PORTION OF REDUCED DIAMETER; BIASING MEANS URGING SAID CASING TOWARDS SAID SEAL RING A PREDETERMINED AMOUNT AND URGING SAID V-SHAPED RINGS AGAINST SAID CASING END PORTION ANOTHER PREDETERMINED AMOUNT WHEREBY SAID SEAL RING IS PRESSED INTO SEALING ENGAGEMENT WITH SAID RING IS PRESSED INTO SURE AND SAID V-SHAPED RINGES ARE PRESSED INTO SEALING ENGAGEMENT WITH SAID ROD AT A SEOND UNIT PRESSURE LESS THAN SAID FIRST UNIT PRESSURE; AND
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |