Patent US3190661A successfully refreshed from Google Patents.
US3190661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented seal with stationary spaced sealing members
Assignee: Gits Bros Mfg Co
•
Filing: 1962-02-08
•
Granted: 1965-06-22
•
Expires: 1982-02-08
Abstract
No abstract record available.
Inventors
- 👤 Edward C Wahl
- 👤 Schulz George
- 👤 Raymond H Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/26; F16J15/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A ROTARY SEAL ASSEMBLY COMPRISING, A ROTARY MEMBER HAVING A CYLINDRICAL ROTATING OUTER SURFACE, A PAIR OF CARBON SEALING RINGS EACH HAVING AN INNER CYLINDRICAL SURFACE WITH A NON-ENGAGING CLOSE RUNNING CLEARANCE BETWEEN SAID INNER AND OUTER SURFACES, AND HAVING ANNULAR RADIAL AXIALLY OUTWARDLY FACING SURFACES, SAID RINGS HAVING AN INNER RECESSED GROOVE BETWEEN THEM, AND EACH HAVING A PORTION OF RADIAL PASSAGES TO COACTINGLY FORM PASSAGES THEREBETWEEN LEADING OUTWARDLY FROM BETWEEN THE RINGS FOR THE ESCAPE OF FLUID, A HOUSING SURROUNDING THE RINGS AND HAVING PASSAGES COMMUNICATING WITH SAID RING PASSAGES FOR DUMPING FLUID, A PAIR OF HOLDING RINGS SUPPORTED IN SAID HOUSING HAVING RADIAL SURFACES FACING THE RADIAL SURFACES OF SAID SEALING RINGS, AN ANNULAR RESILIENT RING BETWEEN EACH SEALING RING AND HOLDING RING POSITIONED BETWEEN THE RADIAL SURFACES THEREOF TO FRICTIONALLY HOLD THE SEALING RINGS WITH THE SEALING RINGS BEING RADIALLY DISPLACEABLE TO
Claim 2
Dependent Claim
146 words
A ROTARY SEAL ASSEMBLY COMPRISING, A ROTARY MEMBER HAVING A CYLINDRICAL ROTATING OUTER SURFACE, A PAIR OF CARBON SEALING RINGS EACH HAVING AN INNER CYLINDRICAL SURFACE WITH A NON-ENGAGING CLOSE RUNNING CLEARANCE BETWEEN SAID INNER AND OUTER SURFACES, AND HAVING ANNULAR RADIAL AXIALLY OUTWARDLY FACING SURFACES, SAID RINGS HAVING AN INNER RECESSED GROOVE BETWEEN THEM, AND EACH HAVING A PORTION OF RADIAL PASSAGES TO COACTINGLY FORM PASSAGES THEREBETWEEN LEADING OUTWARDLY FROM BETWEEN THE RINGS FOR THE ESCAPE OF FLUID, A HOUSING SURROUNDING THE RINGS AND HAVING PASSAGES COMMUNICATING WITH SAID RING PASSAGES FOR DUMPING FLUID, A PAIR OF HOLDING RINGS SUPPORTED IN SAID HOUSING HAVING RADIAL SURFACES FACING THE RADIAL SURFACES OF SAID SEALING RINGS, AN ANNULAR RESILIENT RING BETWEEN EACH SEALING RING AND HOLDING RING POSITIONED BETWEEN THE RADIAL SURFACES THEREOF TO FRICTIONALLY HOLD THE SEALING RINGS WITH THE SEALING RINGS BEING RADIALLY DISPLACEABLE TO
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |