Patent US3108514A successfully refreshed from Google Patents.
US3108514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means
Assignee: Joy Manufacturing Co
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Filing: 1961-08-14
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Granted: 1963-10-29
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 John E Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN APPARATUS FOR PREVENTING LEAKAGE OF PRESSURE FLUID FROM AN EXPANSIBLE CHAMBER BEING ADAPTED TO FEED A ROCK DRILL COMPRISING, AN ENCLOSED ELONGATED CHAMBER INCLUDING A CLOSELY FITTING BOUNDARY WALL HAVING RELATIVE AXIAL MOVEMENT WITH RESPECT TO SAID CHAMBER IN RESPONSE TO PRESSURE FLUID SELECTIVELY ADMITTED TO AND DISCHARGED FROM SAID CHAMBER, DEFORMABLE SEALING MEANS HAVING THE OUTER PERIPHERY THEREOF COMPLEMENTARY TO AND FRICTIONALLY ENGAGING THE INNER SURFACE OF SAID CHAMBER, MEANS FOR SECURING SAID SEALING MEANS TO SAID BOUNDARY WALL, SAID LAST MENTIONED MEANS INCLUDING AN OFFSET BOSS PORTION FORMED ON SAID BOUNDARY WALL AND AN OPENING EXTENDING THROUGH SAID SEALING MEANS SIMILAR TO SAID BOSS BUT BEING OF GREATER DIMENSION TO PERMIT TRANSVERSE FREEDOM OF MOVEMENT OF SAID BOUNDARY WALL RELATIVE TO SAID SEALING MEANS.
Claim 2
Independent Claim
127 words
AN APPARATUS FOR PREVENTING LEAKAGE OF PRESSURE FLUID FROM AN EXPANSIBLE CHAMBER BEING ADAPTED TO FEED A ROCK DRILL COMPRISING, AN ENCLOSED ELONGATED CHAMBER INCLUDING A CLOSELY FITTING BOUNDARY WALL HAVING RELATIVE AXIAL MOVEMENT WITH RESPECT TO SAID CHAMBER IN RESPONSE TO PRESSURE FLUID SELECTIVELY ADMITTED TO AND DISCHARGED FROM SAID CHAMBER, DEFORMABLE SEALING MEANS HAVING THE OUTER PERIPHERY THEREOF COMPLEMENTARY TO AND FRICTIONALLY ENGAGING THE INNER SURFACE OF SAID CHAMBER, MEANS FOR SECURING SAID SEALING MEANS TO SAID BOUNDARY WALL, SAID LAST MENTIONED MEANS INCLUDING AN OFFSET BOSS PORTION FORMED ON SAID BOUNDARY WALL AND AN OPENING EXTENDING THROUGH SAID SEALING MEANS SIMILAR TO SAID BOSS BUT BEING OF GREATER DIMENSION TO PERMIT TRANSVERSE FREEDOM OF MOVEMENT OF SAID BOUNDARY WALL RELATIVE TO SAID SEALING MEANS.
References Cited (Backward Citations)
US1258471A
Cited
US1606511A
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US2050360A
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US2272631A
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US2512098A
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FR1005224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |