US3763739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High rate of flow port for spool valves
Assignee: General Electric Co
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Filing: 1971-06-01
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Granted: 1973-10-09
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Expires: 1991-06-01
Abstract
Abstract A feature of this invention is a spool valve which has a spool with an O-ring seal, said seal having a given longitudinal dimension, the spool operating in a bore in a housing to open and close a port opening into said bore, said port formed of a plurality of apertures, each aperture having a diameter, parallel to the longitudinal axis of said O-ring, which is smaller than said given longitudinal dimension of said seal.
Inventors
- 👤 Douglas P Tassie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:59
CPC Classifications
F; F41; F41A; F41A1/00; F41A1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
A gun comprising: a conduit for passing a fluid; a valve coupled to said conduit for controlling the passage of the fluid therethrough; said valve including: a valve chamber having a surface having a port means for fluid therein, a valve spool having a ring type seal abuting said surface for closing and for exposing said port means, said valve spool disposed for movement along an axis, said ring type seal having a cross-section diameter parallel to said axis, said port means comprising a plurality of apertures, each having a respective diameter parallel to said axis which is smaller than said cross-section diameter of said ring type seal, said plurality of apertures being arranged in a pattern of acceleration of cross-sectional port area such that as said valve spool moves at a constant velocity to open said port, an increasing cross-sectional port area is exposed per unit time.
Claim 2
Dependent Claim
148 words
A gun comprising: a conduit for passing a fluid; a valve coupled to said conduit for controlling the passage of the fluid therethrough; said valve including: a valve chamber having a surface having a port means for fluid therein, a valve spool having a ring type seal abuting said surface for closing and for exposing said port means, said valve spool disposed for movement along an axis, said ring type seal having a cross-section diameter parallel to said axis, said port means comprising a plurality of apertures, each having a respective diameter parallel to said axis which is smaller than said cross-section diameter of said ring type seal, said plurality of apertures being arranged in a pattern of acceleration of cross-sectional port area such that as said valve spool moves at a constant velocity to open said port, an increasing cross-sectional port area is exposed per unit time.
Claim 3
Dependent Claim
148 words
A gun comprising: a conduit for passing a fluid; a valve coupled to said conduit for Controlling the passage of the fluid therethrough; said valve including: a valve chamber having a surface having a port means for fluid therein, a valve spool having a ring type seal abuting said surface for closing and for exposing said port means, said valve spool disposed for movement along an axis, said ring type seal having a cross-section diameter parallel to said axis, said port means comprising a plurality of apertures, each having a respective diameter parallel to said axis which is smaller than said cross-section diameter of said ring type seal, said plurality of apertures being arranged in a pattern of deceleration of cross-sectional port area such that as said valve spool moves at a constant velocity to close said port, a decreasing cross-sectional port area is closed per unit time.
Claim 4
Dependent Claim
148 words
A gun comprising: a conduit for passing a fluid; a valve coupled to said conduit for Controlling the passage of the fluid therethrough; said valve including: a valve chamber having a surface having a port means for fluid therein, a valve spool having a ring type seal abuting said surface for closing and for exposing said port means, said valve spool disposed for movement along an axis, said ring type seal having a cross-section diameter parallel to said axis, said port means comprising a plurality of apertures, each having a respective diameter parallel to said axis which is smaller than said cross-section diameter of said ring type seal, said plurality of apertures being arranged in a pattern of deceleration of cross-sectional port area such that as said valve spool moves at a constant velocity to close said port, a decreasing cross-sectional port area is closed per unit time.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |