US3391941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft-sealing system
Assignee: DONLEY PRODUCTS Inc
•
Filing: 1963-10-16
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Granted: 1968-07-09
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Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Philip F Donley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:39
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F16J15/363
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A MACHINE HAVING A HOUSING, A SHAFT EXTENDING THROUGH AN OPENING IN THE HOUSING, AND FIRST AND SECOND END MEMBERS ENCOMPASSING THE SHAFT IN SPACED RELATION TO EACH OTHER, THE COMBINATION OF A SEALING UNIT FLOATING ON THE SHAFT AND, BETWEEN SAID SEALING UNIT AND SAID FIRST AND SECOND END MEMBERS, TWO GENERALLY SIMILAR SUB-ASSEMBLIES EACH OF WHICH COMPRISES (A) AN ANNULAR SEATING ELEMENT IN SEALING ENGAGEMENT WITH THE SEALING UNIT, (B) A MODERATELY FLEXIBLE CARRIER FORMED AFTER THE FASHION OF A CIRCULAR CHANNEL, SAID CARRIER SUPPORTING THE SEATING ELEMENT IN SUCH SEALING ENGAGEMENT, AND (C) A SUBSTANTIALLY RIGID SPACER SUPPORTING THE CARRIER IN TELESCOPIC FASHION AND EXTENDING IN A GENERALLY AXIAL DIRECTION FROM THE CARRIER TO THE ADJACENT END MEMBER.
Claim 2
Dependent Claim
122 words
IN A MACHINE HAVING A HOUSING, A SHAFT EXTENDING THROUGH AN OPENING IN THE HOUSING, AND FIRST AND SECOND END MEMBERS ENCOMPASSING THE SHAFT IN SPACED RELATION TO EACH OTHER, THE COMBINATION OF A SEALING UNIT FLOATING ON THE SHAFT AND, BETWEEN SAID SEALING UNIT AND SAID FIRST AND SECOND END MEMBERS, TWO GENERALLY SIMILAR SUB-ASSEMBLIES EACH OF WHICH COMPRISES (A) AN ANNULAR SEATING ELEMENT IN SEALING ENGAGEMENT WITH THE SEALING UNIT, (B) A MODERATELY FLEXIBLE CARRIER FORMED AFTER THE FASHION OF A CIRCULAR CHANNEL, SAID CARRIER SUPPORTING THE SEATING ELEMENT IN SUCH SEALING ENGAGEMENT, AND (C) A SUBSTANTIALLY RIGID SPACER SUPPORTING THE CARRIER IN TELESCOPIC FASHION AND EXTENDING IN A GENERALLY AXIAL DIRECTION FROM THE CARRIER TO THE ADJACENT END MEMBER.
References Cited (Backward Citations)
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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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |