US3606352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal assembly
Assignee: Parker Hannifin Corp
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Filing: 1969-04-18
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Granted: 1971-09-20
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Expires: 1989-04-18
Abstract
Abstract A FLUID SEAL ASSEMBLY HAVING A SEALING PORTION ADAPTED TO BE MOUNTED IN A HOUSING TO MAKE FLUID SEALING ENGAGEMENT WITH A RECIPROCATING AND/OR ROTATING SHAFT WHICH EXTENDS INTO SAID HOUSING, SAID ASSMBLY ALSO HAVING A RIGID TUBULAR SHIELD PORTION WHICH EXTENDS AXIALLY ALONG SAID SHAFT OT PROTECT THE LATTER FROM SCRATCHING, MARRING, OR OTHER DAMAGE THUS TO PROLONG THE LIFE OF THE SEALING PORTION OF SAID ASSEMBLY, BUT WITHOUT IMPEDING ROTATION AND RECIPROCATIONG OF SAID SHAFT.
Inventors
- 👤 Walter A Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/002; Y; Y10; Y10S; Y10S277/00; Y10S277/911; Y10S277/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |