Patent US3682437A successfully refreshed from Google Patents.
US3682437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing valve for pressure regulator
Assignee: Airco Inc
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Filing: 1971-03-30
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Granted: 1972-08-08
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Expires: 1991-03-30
Abstract
Abstract A novel seat arrangement for a gas pressure regulator having an O-ring seat positioned in a retainer cap on the high pressure side of the regulating orifice wherein the regulated gas pressure is transmitted through the valve stem to the space in the retainer cap behind the O-ring seat.
Inventors
- 👤 Henry A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:18
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; F17; F17C; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0338; F17C2205/0388; F17C2205/0391; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825; Y10T137/7826
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
A pressure regulator having high and low pressure chambers connected by a valve having soft and hard seats and operable in response to the pressure in the low pressure chamber wherein said valve comprises a retaining cap, a valve stem with one end thereof positioned within said retaining cap, said soft seat comprised of an O-ring of resilient material around the said one end of said stem and positioned within the cap for making sealing contact with the hard valve seat in the valve closed position, the stem including fluid passage means connecting the low pressure area of said regulator and the inner-peripheral surface of said O-ring adjacent the retainer cap whereby the pressure in the high pressure chamber holds the O-ring against the stem and retainer cap during the initial opening movement of the valve for breaking the pressure seal.
Claim 2
Dependent Claim
141 words
A pressure regulator having high and low pressure chambers connected by a valve having soft and hard seats and operable in response to the pressure in the low pressure chamber wherein said valve comprises a retaining cap, a valve stem with one end thereof positioned within said retaining cap, said soft seat comprised of an O-ring of resilient material around the said one end of said stem and positioned within the cap for making sealing contact with the hard valve seat in the valve closed position, the stem including fluid passage means connecting the low pressure area of said regulator and the inner-peripheral surface of said O-ring adjacent the retainer cap whereby the pressure in the high pressure chamber holds the O-ring against the stem and retainer cap during the initial opening movement of the valve for breaking the pressure seal.
Claim 3
Dependent Claim
24 words
A pressure regulator as specified in claim 1 wherein the valve stem is of tubular form and is laterally vented at said one end.
Claim 4
Dependent Claim
30 words
A pressure regulator as specified in claim 2 wherein the valve stem has a longitudinal seam whereby the pressure on the outside and inside of the stem are the same.
Claim 5
Dependent Claim
30 words
A pressure regulator valve as specified in claim 1 wherein the operating stem is composed of a gas permeable material at the portion between said cap and low pressure region.
Claim 6
Dependent Claim
18 words
A pressure regulator valve as specified in claim 4 wherein the gas permeable material is a sintered mixture.
Claim 7
Dependent Claim
26 words
A pressure regulator as specified in claim 1 wherein said valve stem includes longitudinal grooves along at least a portion of the said one end thereof.
Claim 8
Dependent Claim
24 words
A pressure regulator as specified in claim 1 wherein said valve stem has an enlarged diameter over a portion of said one end thereof.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |