US3779274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: Robertshaw Controls Co
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Filing: 1972-11-21
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Granted: 1973-12-18
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Expires: 1992-11-21
Abstract
Abstract A pressure regulator including a housing having inlet and outlet ports and a valve seat communicating with the inlet port, a flexing member mounted in the housing to form a chamber therein and a cover press fitted in the housing to retain the flexing member and having an annular fulcrum engaging the flexing member, the flexing member being flexed at a ring disposed within the fulcrum to move a valve face portion of the flexing member toward and away from the valve seat to regulate outlet pressure. In one embodiment the flexing member includes a rubber diaphragm with a metal spring disc secured thereto, and in another embodiment the flexing member is a thin, flexible metal disc providing the functions of both spring and diaphragm.
Inventors
- 👤 S Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:34
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; F16K7/00; F16K7/12; F16K7/14; F16K7/17; G05D16/0675; G05D16/0683; G05D16/0686; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
139 words
A pressure regulator comprising; a housing having inlet and outlet ports therein and a valve seat communicating with said inlet port; flexing means including diaphragm means having a peripheral margin mounted in said housing and valve face means disposed to cooperate with said valve seat to control flow therethrough and spring means having a flexure ring surrounding said valve face means, said flexing means being flexible about said flexure ring; and cover means for retaining said flexing means in said housing and including fulcrum means engaging said flexing means at a position between said peripheral margin and said flexure ring whereby flexing of the area of said flexing means between said position engaging said fulcrum means and said peripheral margin in a first direction causes movement of said valve face means in a second direction opposite said first direction.
Claim 2
Dependent Claim
139 words
A pressure regulator comprising; a housing having inlet and outlet ports therein and a valve seat communicating with said inlet port; flexing means including diaphragm means having a peripheral margin mounted in said housing and valve face means disposed to cooperate with said valve seat to control flow therethrough and spring means having a flexure ring surrounding said valve face means, said flexing means being flexible about said flexure ring; and cover means for retaining said flexing means in said housing and including fulcrum means engaging said flexing means at a position between said peripheral margin and said flexure ring whereby flexing of the area of said flexing means between said position engaging said fulcrum means and said peripheral margin in a first direction causes movement of said valve face means in a second direction opposite said first direction.
Claim 3
Dependent Claim
54 words
The pressure regulator as recited in claim 1 wherein said housing has a side wall having a cylindrical inner surface, and said cover means has an outer rim having a diameter substantially equal to the diameter of said inner surface and frictionally engaging said inner surface to retain said flexing means in said housing.
Claim 4
Dependent Claim
45 words
The pressure regulator as recited in claim 2 wherein said inner surface of said side wall terminates at an annular shoulder, and said outer rim has a bottom surface clamping said peripheral margin of said flexing means against said shoulder with a fluid tight seal.
Claim 5
Dependent Claim
49 words
The pressure regulator as recited in claim 3 wherein said shoulder includes an annular bead defining a recess in said shoulder, and said diaphragm means includes a rubber diaphragm having said peripheral margin clamped between said bottom surface of said rim of said cover means and said annular bead.
Claim 6
Dependent Claim
22 words
The pressure regulator as recited in claim 4 wherein said spring means is a thin, flexible metal disc secured to said diaphragm.
Claim 7
Dependent Claim
40 words
The pressure regulator as recited in claim 5 wherein said disc has a plurality of radial ribs extending from flexure ring to the periphery of said disc and said fulcrum means has an annular configuration and engages said radial ribs.
Claim 8
Dependent Claim
37 words
The pressure regulator as recited in claim 6 wherein said disc has a central annular rib, and said flexure ring is defined by the depressed portion between said annular rib and the ends of said radial ribs.
Claim 9
Dependent Claim
37 words
The pressure regulator as recited in claim 3 wherein said shoulder has an annular recess therein, and said flexing means includes an O-ring disposed in said recess to seal against said peripheral margin of said diaphragm means.
Claim 10
Dependent Claim
49 words
The pressure regulator as recited in claim 8 wherein said diaphragm means and said spring means are integrally formed in a single, thin flexible metal disc, said disc having strengthening rib means surrounding said flexure ring, and said fulcrum means has an annular configuration and engages said rib means.
Claim 11
Dependent Claim
30 words
The pressure regulator as recited in claim 1 wherein said diaphragm means is a rubber diaphragm and said spring means is a thin flexible metal disc secured to said diaphragm.
Claim 12
Dependent Claim
27 words
The pressure regulator as recited in claim 10 wherein said cover means is press fitted in said housing and has an annular projection forming said fulcrum means.
Claim 13
Dependent Claim
24 words
The pressure regulator as recited in claim 11 wherein said disc has strengthening rib means surrounding said flexure ring and engaging said fulcrum means.
Claim 14
Dependent Claim
26 words
The pressure regulator as recited in claim 1 wherein said diaphragm means and said spring means are integrally formed in a single, thin, flexible metal disc.
Claim 15
Dependent Claim
27 words
The pressure regulator as recited in claim 13 wherein said cover means is press fitted in said housing and has an annular projection forming said fulcrum means.
Claim 16
Dependent Claim
24 words
The pressure regulator as recited in claim 14 wherein said disc has strengthening rib means surrounding said flexure ring and engaging said fulcrum means.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |