Patent US3328041A successfully refreshed from Google Patents.
US3328041A
Expired / Lapsed
US
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Slipper and loading element fluid seal
Assignee: Douglas Aircraft Co Inc
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Filing: 1964-01-22
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Granted: 1967-06-27
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 John C Bloom
- 👤 James V Walker
- 👤 Jeanette D Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:10
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/909; Y10S277/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN IMPROVED FLUID SEAL COMPRISING: AN ANNULAR SLIPPER HAVING A CROSS SECTIONAL CONFIGURATION WHICH IS SYMMETRICAL ABOUT AN AXIALLY CENTRAL RADIUS, SAID CROSS SECTIONAL CONFIGURATION INCLUDING AN AXIALLY EXTENDING SEALING CONTOUR PORTION DISPOSED SYMMETRICALLY TO SAID CENTRAL RADIUS AND ADAPTED TO CONTACT AN ASSOCIATED MATING CONTOUR PORTION OF THE CROSS SECTIONAL CONFIGURATION OF ANOTHER STRUCTURE, AND A FULLY CURVED, GUIDING CONTOUR PORTION DISPOSED SYMMETRICALLY IN ITS RELAXED STATE TO SAID CENTRAL RADIUS; AND AN ANNULAR LOADING ELEMENT HAVING A CROSS SECTIONAL CONFIGURATION INCLUDING A CONTACTING CONTOUR PORTION ADAPTED TO CONTACT AT LEAST A PART OF SAID FULLY CURVED CONTOUR PORTION OF THE CROSS SECTIONAL CONFIGURATION OF SAID SLIPPER, SAID FULLY CURVED CONTOUR PORTION ACTING TO CENTER AND RADIALLY ALIGN SAID CONTACTING CONTOUR PORTION SYMMETRICALLY ABOUT SAID CENTRAL RADIUS FOR EVEN COMPRESSION SAID CONTACTING CONTOUR PORTION DURING INSTALLATION OF SAID FLUID SEAL AND THEREAFTER WHEREBY SAID FLUID SEAL CAN BE PROPERLY AND EASILY INSTALLED IN CONVENTIONAL CLOSED, UNSPLIT GROOVES OF VERY RELATIVELY SMALL TO VERY RELATIVELY LARGE SIZES.
Claim 2
Dependent Claim
167 words
AN IMPROVED FLUID SEAL COMPRISING: AN ANNULAR SLIPPER HAVING A CROSS SECTIONAL CONFIGURATION WHICH IS SYMMETRICAL ABOUT AN AXIALLY CENTRAL RADIUS, SAID CROSS SECTIONAL CONFIGURATION INCLUDING AN AXIALLY EXTENDING SEALING CONTOUR PORTION DISPOSED SYMMETRICALLY TO SAID CENTRAL RADIUS AND ADAPTED TO CONTACT AN ASSOCIATED MATING CONTOUR PORTION OF THE CROSS SECTIONAL CONFIGURATION OF ANOTHER STRUCTURE, AND A FULLY CURVED, GUIDING CONTOUR PORTION DISPOSED SYMMETRICALLY IN ITS RELAXED STATE TO SAID CENTRAL RADIUS; AND AN ANNULAR LOADING ELEMENT HAVING A CROSS SECTIONAL CONFIGURATION INCLUDING A CONTACTING CONTOUR PORTION ADAPTED TO CONTACT AT LEAST A PART OF SAID FULLY CURVED CONTOUR PORTION OF THE CROSS SECTIONAL CONFIGURATION OF SAID SLIPPER, SAID FULLY CURVED CONTOUR PORTION ACTING TO CENTER AND RADIALLY ALIGN SAID CONTACTING CONTOUR PORTION SYMMETRICALLY ABOUT SAID CENTRAL RADIUS FOR EVEN COMPRESSION SAID CONTACTING CONTOUR PORTION DURING INSTALLATION OF SAID FLUID SEAL AND THEREAFTER WHEREBY SAID FLUID SEAL CAN BE PROPERLY AND EASILY INSTALLED IN CONVENTIONAL CLOSED, UNSPLIT GROOVES OF VERY RELATIVELY SMALL TO VERY RELATIVELY LARGE SIZES.
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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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |