US3345076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiper-scraper seal
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1965-04-21
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Granted: 1967-10-03
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Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Edward A Wheelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3204; F16J15/3232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A SEALING DEVICE FOR A ROD PASSING THROUGH AN OPENING IN A HOUSING, SAID DEVICE COMPRISING A RIGID SINGLE-PIECE ANNULAR HOLDER FOR ENCIRCLING SAID ROD, SAID HOLDER BEING PRESS-FITTED INTO SAID HOUSING AND HAVING A CONICAL NOSE SECTION IN WHICH IS FORMED A CONICAL RECESS OPENING UPON SAID ROD, A SHEET-METAL HELICALLY WOUND STRIP LOOSELY RETAINED IN SAID RECESS AND HAVING AN INTERNAL DIAMETER IN ITS FREE STATE SMALLER THAN THE OUTER DIAMETER OF SAID ROD TO BEAR RESILIENTLY UPON AND SCRAPE SAID ROD, AND AN ELASTOMERIC WIPER REMOVABLY RETAINED IN SAID HOLDER ADJACENT SAID HELICALLY WOUND STRIP.
Claim 2
Dependent Claim
98 words
A SEALING DEVICE FOR A ROD PASSING THROUGH AN OPENING IN A HOUSING, SAID DEVICE COMPRISING A RIGID SINGLE-PIECE ANNULAR HOLDER FOR ENCIRCLING SAID ROD, SAID HOLDER BEING PRESS-FITTED INTO SAID HOUSING AND HAVING A CONICAL NOSE SECTION IN WHICH IS FORMED A CONICAL RECESS OPENING UPON SAID ROD, A SHEET-METAL HELICALLY WOUND STRIP LOOSELY RETAINED IN SAID RECESS AND HAVING AN INTERNAL DIAMETER IN ITS FREE STATE SMALLER THAN THE OUTER DIAMETER OF SAID ROD TO BEAR RESILIENTLY UPON AND SCRAPE SAID ROD, AND AN ELASTOMERIC WIPER REMOVABLY RETAINED IN SAID HOLDER ADJACENT SAID HELICALLY WOUND STRIP.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |