US3103950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow limiting valve
Assignee: Individual
•
Filing: 1960-09-19
•
Granted: 1963-09-17
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 William K Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A VALVE FOR LIMITING A FLOW OF A FLUID IN A HYDRAULIC SYSTEM HAVING A CONSTANT PRESSURE COMPRISING, A HOUSING HAVING A PASSAGEWAY THERETHROUGH, ONE END OF SAID PASSAGEWAY BEING DESIGNATED AS AN INLET PORT THE OTHER END BEING DESIGNATED AS AN EXIT PORT, MEANS IN SAID PASSAGEWAY ADJACENT SAID INLET PORT FORMING A CYLINDER, A PISTON ADAPTED FOR MOVEMENT IN SAID CYLINDER, SAID MEANS INCLUDING A CHAMBER BEHIND SAID CYLINDER, SPRING MEANS WITHIN SAID CHAMBER FOR BIASING SAID PISTON TOWARD SAID INLET PORT, SAID HOUSING AND CYLINDER FORMING MEANS DEFINING AN ANNULAR PASSAGEWAY HAVING OPENINGS CONNECTING SAID CYLINDER AND INLET WITH SAID EXIT PORT, THE OPENING IN SAID CYLINDER FORMING A METERING ORIFICE CONTROLLED BY THE POSITION OF SAID PISTON, AND CAPILLARY MEANS CONNECTING SAID INLET AND SAID CHAMBER FOR INTRODUCING A PRESSURE AIDING THE FORCE OF SAID BIASING SPRING TO CAUSE A CLOSING OF SAID METER-
Claim 2
Dependent Claim
148 words
A VALVE FOR LIMITING A FLOW OF A FLUID IN A HYDRAULIC SYSTEM HAVING A CONSTANT PRESSURE COMPRISING, A HOUSING HAVING A PASSAGEWAY THERETHROUGH, ONE END OF SAID PASSAGEWAY BEING DESIGNATED AS AN INLET PORT THE OTHER END BEING DESIGNATED AS AN EXIT PORT, MEANS IN SAID PASSAGEWAY ADJACENT SAID INLET PORT FORMING A CYLINDER, A PISTON ADAPTED FOR MOVEMENT IN SAID CYLINDER, SAID MEANS INCLUDING A CHAMBER BEHIND SAID CYLINDER, SPRING MEANS WITHIN SAID CHAMBER FOR BIASING SAID PISTON TOWARD SAID INLET PORT, SAID HOUSING AND CYLINDER FORMING MEANS DEFINING AN ANNULAR PASSAGEWAY HAVING OPENINGS CONNECTING SAID CYLINDER AND INLET WITH SAID EXIT PORT, THE OPENING IN SAID CYLINDER FORMING A METERING ORIFICE CONTROLLED BY THE POSITION OF SAID PISTON, AND CAPILLARY MEANS CONNECTING SAID INLET AND SAID CHAMBER FOR INTRODUCING A PRESSURE AIDING THE FORCE OF SAID BIASING SPRING TO CAUSE A CLOSING OF SAID METER-
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |