Patent US4454383A successfully refreshed from Google Patents.
Patent US3872877A successfully refreshed from Google Patents.
US3872877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control system and pressure regulator construction therefor and method for operating the same
Assignee: Robertshaw Controls Co
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Filing: 1974-02-25
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Granted: 1975-03-25
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Expires: 1994-02-25
Abstract
Abstract A fuel control system for a cooking apparatus having a source of fuel, main burner means and pilot burner means. A first pressure regulator for regulating the pressure of the fuel delivered from the source to the main burner means and a second pressure regulator for regulating the pressure of the fuel delivered from the source to the pilot burner means for both the operation of the standby flame means of the pilot burner means and the operation of the heater flame means of the pilot burner means independently of the pressure regulation of the fuel for the main burner means.
Inventors
- 👤 Charles D Branson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/06; F23N5/067; F23N2227/00; F23N2227/22; F23N2235/00; F23N2235/12; F23N2235/16; F23N2235/20; F23N2235/24; F23N2241/00; F23N2241/08; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2663; Y10T137/2665; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7768
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
A pressure regulator construction comprising housing means having an inlet and an outlet, a first pressure regulator between said inlet and said outlet for regulating the fluid pressure of the fluid delivered to said outlet, said housing means having an inlet means in fluid communication with said inlet upstream from said first pressure regulator and having an outlet means, and a seoncd pressure regulator between said inlet means and said outlet means for regulating the pressure of the fluid delivered to said outlet means, said second pressure regulator controlling the operation of said first pressure regulator, said first pressure regulator having a fluid biasing chamber, said first pressure regulator having a valve member carried by a flexible diaphragm that defines part of said chamber, said valve member having a passage means therethrough that is adapted to direct fluid pressure from a point intermediate said second pressure regulator and said outlet means to said chamber.
Claim 2
Dependent Claim
154 words
A pressure regulator construction comprising housing means having an inlet and an outlet, a first pressure regulator between said inlet and said outlet for regulating the fluid pressure of the fluid delivered to said outlet, said housing means having an inlet means in fluid communication with said inlet upstream from said first pressure regulator and having an outlet means, and a seoncd pressure regulator between said inlet means and said outlet means for regulating the pressure of the fluid delivered to said outlet means, said second pressure regulator controlling the operation of said first pressure regulator, said first pressure regulator having a fluid biasing chamber, said first pressure regulator having a valve member carried by a flexible diaphragm that defines part of said chamber, said valve member having a passage means therethrough that is adapted to direct fluid pressure from a point intermediate said second pressure regulator and said outlet means to said chamber.
Claim 3
Dependent Claim
17 words
A pressure regulator construction as set forth in claim 1 wherein said second pressure regulator is adjustable.
Claim 4
Dependent Claim
41 words
A pressure regulator construction as set forth in claim 1 wherein said second pressure regulator has a valve member with a relatively small effective surface area in relation to the surface area of said valve member of said first pressure regulator.
References Cited (Backward Citations)
US3550623A
Cited
US3654948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |