Patents
US 8113823 B2: Apparatus and method for controlling a damper in a gas-fired appliance
- Granted
- 2012-02-14
- Filed
- 2008-01-29 application 12011944
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A damper mechanism for a gas-fired appliance is disclosed. The damper mechanism is mechanically operated in response to changes in pressure within a portion of the appliance. Changes in gas pressure operate to displace a diaphragm, thereby moving a linkage attached to a flue damper, such that the damper can be moved between open and closed positions. An interim damper control activation arm can pivot in response to movement of the linkage to actuate electrical switches, which act to close a magnetic pilot valve when the damper is in a partially-opened or partially-closed position.
Source: PVGPATDIS, file of 2026-04-10 (ipg120214.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Field Controls, LLC 20 patents | US company or organization | Kinston, NC | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Steven E. Guzorek | Kinston, NC | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F23L | Supplying air or non-combustible liquids or gases to combustion apparatus in general ; valves or dampers specially adapted for controlling air supply or draught in combustion apparatus ; inducing draught in combustion apparatus; tops for chimneys or ventilating shafts; terminals for flues | F23L11/005 | PVGPATDIS, file of 2026-04-10 |
| F23N | Regulating or controlling combustion | F23N5/102 | 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 |
|---|---|---|---|---|---|
| 2008-04-15 | Assignment Assignment of assignor's interest | GUZOREK, STEVEN E. signed 2008-04-01 | FIELD CONTROLS LLC KINSTON, NC | 20812/543 | 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.