Patents
US 11808452 B2: Intermittent pilot ignition gas valve having protection against negative pressure for internal diaphragms
- Granted
- 2023-11-07
- Filed
- 2020-07-17 application 16932142
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Provided are embodiments of a gas valve for an intermittent pilot ignition system. The gas valve includes features designed to address the buildup of negative pressure in a fuel line connected to the gas valve that could cause internal valve diaphragms to open, drawing fuel from the gas valve. In embodiments, the gas valve includes a system of check valves designed to seal off the gas valve when a negative pressure develops. In other embodiments, the gas valve includes a relief valve having a relief port so that air is able to enter the valve proximate to the inlet port so as to avoid building a negative pressure sufficient to open the diaphragms. In both cases, the valve remains primed with fuel for subsequent ignition. The gas valve is envisioned to be useful for a variety of pilot operated systems.
Source: PVGPATDIS, file of 2026-04-10 (ipg231107.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ROBERTSHAW CONTROLS PRIVATE LIMITED 69 patents | Foreign company or organization | Itasca, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| James E. Pearson | Downers Grove, IL | 21 | PVGPATDIS, file of 2026-04-10 | |
| Stephen Sapp | Soddy-Daisy, TN | 3 | PVGPATDIS, file of 2026-04-10 | |
| Tony Leeseberg | Elgin, IL | 7 | PVGPATDIS, file of 2026-04-10 | |
| Brandon Cole | Chicago, IL | 3 | PVGPATDIS, file of 2026-04-10 | |
| Moises Contreras Hernandez | Itasca, IL | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F23N | Regulating or controlling combustion | F23N1/00 | PVGPATDIS, file of 2026-04-10 |
| F23K | Feeding fuel to combustion apparatus | F23K2900/05001 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-10-02 | Security interest Security interest Security interest | RANGE RED OPERATING, INC. signed 2024-10-01 | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT CHICAGO, IL | 69092/195 | PASDL, file of 2026-10-15 |
| 2024-10-01 | Security interest Security interest Term loan patent security agreement | RANGE RED OPERATING, INC. signed 2024-10-01 | CSC DELAWARE TRUST COMPANY WILMINGTON, DE | 69084/281 | PASDL, file of 2026-10-15 |
| 2024-10-01 | Release of security interest Omnibus termination and release of debtor-in-possession security interest in intellectual property | CSC DELAWARE TRUST COMPANY (F/K/A DELAWARE TRUST COMPANY) signed 2024-10-01 | ROBERTSHAW US HOLDING CORP. ITASCA, IL ROBERTSHAW CONTROLS COMPANY ITASCA, IL BURNER SYSTEMS INTERNATIONAL, INC. ITASCA, IL | 69084/266 | PASDL, file of 2026-10-15 |
| 2024-10-01 | Release of security interest Omnibus termination and release of security interest in intellectual property | CSC DELAWARE TRUST COMPANY (F/K/A DELAWARE TRUST COMPANY AND SUCCESSOR AGENT TO ACQUIOM AGENCY SERVICES LLC) signed 2024-10-01 | ROBERTSHAW US HOLDING CORP. ITASCA, IL ROBERTSHAW CONTROLS COMPANY ITASCA, IL BURNER SYSTEMS INTERNATIONAL, INC. ITASCA, IL | 69084/150 | PASDL, file of 2026-10-15 |
| 2024-02-05 | Security interest Security interest Omnibus assignment of intellectual property security agreements | ACQUIOM AGENCY SERVICES LLC signed 2024-01-31 | DELAWARE TRUST COMPANY WILMINGTON, DE | 66493/146 | PASDL, file of 2026-10-15 |
| 2023-05-12 | Security interest Security interest Security interest | ROBERTSHAW CONTROLS COMPANY signed 2023-05-09 ROBERTSHAW US HOLDINGS CORP. signed 2023-05-09 BURNER SYSTEMS INTERNATIONAL, INC. signed 2023-05-09 | ACQUIOM AGENCY SERVICES LLC DENVER, CO | 63632/614 | PASDL, file of 2026-10-15 |
| 2020-10-16 | Assignment Assignment of assignor's interest | COLE, BRANDON signed 2019-10-02 CONTRERAS, MOISES signed 2019-10-02 LEESEBERG, TONY signed 2019-10-02 PEARSON, JAMES E. signed 2019-10-02 SAPP, STEPHEN signed 2019-10-02 | ROBERTSHAW CONTROLS COMPANY ITASCA, IL | 54077/845 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.