Patent US3086544A successfully refreshed from Google Patents.
US3086544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve
Assignee: Motors Liquidation Co
•
Filing: 1960-10-12
•
Granted: 1963-04-23
•
Expires: 1980-10-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Yost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
B; B60; B60K; B60K25/00; B60K25/04; F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6086; Y10T137/7722; Y10T137/7837; Y10T137/7897; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
156 words
CHECK VALVE MEANS COMPRISING IN COMBINATION, A VALVE HOUSING FORMED OF A RESILIENT MATERIAL, A VALVE CHAMBER FORMED IN SAID VALVE HOUSING, CONDUIT MEANS LEADING TO AND FROM SAID VALVE CHAMBER, VALVE MEANS WITHIN SAID VALVE HOUSING, AN END PLATE, AN ANNULAR RECESS FORMED AROUND THE INNER PERIPHERY OF SAID RESILIENT VALVE HOUSING AND PROVIDED WITH A COMPRESSIBLE WALL AT ONE EDGE THEREOF AND A RADIALLY EXPANDABLE WALL AT THE OTHER EDGE THEREOF AND HAVING A SMALLER FREE AXIAL DIMENSION BETWEEN THE EDGES THEREOF THAN SAID END PLATE, SAID END PLATE HAVING A DIAMETER GREATER THAN THE DIAMETER OF THE EDGES OF SAID RECESS FOR RECEPTION WITHIN SAID ANNULAR RECESS IN ENGAGING RELATION WITH THE EDGES OF SAID RECESS TO FIRST RADIALLY EXPAND SAID RADIALLY EXPANDABLE WALL AND THEN AXIALLY COMPRESS A PORTION OF SAID COMPRESSIBLE WALL TO PROVIDE A POSITIVE SEAL WHEN SAID END PLATE IS RECEIVED WITHIN SAID ANNULAR RECESS OF SAID VALVE HOUSING.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |