US3100508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valves
Assignee: Individual
•
Filing: 1961-05-31
•
Granted: 1963-08-13
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Mercier Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:40
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0402; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A VALVE COMPRISING A CASING HAVING PRESSURE INLET, PRESSURE CONTROL AND PILOT PASSAGEWAYS, A MAIN PISTON SLIDABLY MOUNTED IN SAID CASING AND CONTROLLING SAID PRESSURE INLET AND CONTROL PASSAGEWAYS, SAID MAIN PISTON BEING MOVABLE BETWEEN A FIRST POSITION IN WHICH COMMUNICATION IS CUT OFF BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS AND A SECOND POSITON IN WHICH COMMUNICATION IS AFFORDED BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS, A VALVE HEAD SLIDABLY MOUNTED IN SAID CASING ON ONE SIDE OF SAID PISTON, RESILIENT MEANS NORMALLY RETAINING SAID VALVE HEAD IN POSITION TO DEFINE A RESTRICTED PASSAGEWAY IN SAID CASING IN COMMUNICATION WITH SAID PILOT PASSAGEWAY, SAID CASING HAVING A CHAMBER IN COMMUNICATION WITH SAID RESTRICTED PASSAGEWAY, SAID VALVE HEAD AND SAID MAIN PISTON BEING OPERATIVELY EXPOSED IN SAID CHAMBER FOR MOVEMENT THEREOF WHEN FLUID UNDER PRESSURE FLOWS INTO SAID CHAMBER THROUGH SAID PILOT PASSAGEWAY THEREBY RESPECTIVELY TO INCREASE THE SIZE OF SAID RESTRICTED PASSAGEWAY AND TO PROVIDE COMMUNICATION BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS.
Claim 2
Dependent Claim
164 words
A VALVE COMPRISING A CASING HAVING PRESSURE INLET, PRESSURE CONTROL AND PILOT PASSAGEWAYS, A MAIN PISTON SLIDABLY MOUNTED IN SAID CASING AND CONTROLLING SAID PRESSURE INLET AND CONTROL PASSAGEWAYS, SAID MAIN PISTON BEING MOVABLE BETWEEN A FIRST POSITION IN WHICH COMMUNICATION IS CUT OFF BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS AND A SECOND POSITON IN WHICH COMMUNICATION IS AFFORDED BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS, A VALVE HEAD SLIDABLY MOUNTED IN SAID CASING ON ONE SIDE OF SAID PISTON, RESILIENT MEANS NORMALLY RETAINING SAID VALVE HEAD IN POSITION TO DEFINE A RESTRICTED PASSAGEWAY IN SAID CASING IN COMMUNICATION WITH SAID PILOT PASSAGEWAY, SAID CASING HAVING A CHAMBER IN COMMUNICATION WITH SAID RESTRICTED PASSAGEWAY, SAID VALVE HEAD AND SAID MAIN PISTON BEING OPERATIVELY EXPOSED IN SAID CHAMBER FOR MOVEMENT THEREOF WHEN FLUID UNDER PRESSURE FLOWS INTO SAID CHAMBER THROUGH SAID PILOT PASSAGEWAY THEREBY RESPECTIVELY TO INCREASE THE SIZE OF SAID RESTRICTED PASSAGEWAY AND TO PROVIDE COMMUNICATION BETWEEN SAID PRESSURE INLET AND CONTROL PASSAGEWAYS.
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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |