Patents
US 11703221 B2: Flue damper having a float coupled to a damper gate
- Granted
- 2023-07-18
- Filed
- 2020-09-16 application 17023005
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A flue damper may include a flue pipe with a first side leading to an outlet of the flue damper and a second side leading to an inlet of the flue damper. A damper gate may be included and have an open state and a closed state, where in the open state, the first side of the flue pipe is in fluid communication with the second side, and where in the closed state, the damper gate interrupts fluid communication between the first side and the second side. A float may be secured to an upper surface of the damper gate. The upper surface of the damper gate may face the first side of the flue pipe when the damper gate is in the closed state such that the damper gate at least partially opens when condensate collects within the first side of the flue pipe.
Source: PVGPATDIS, file of 2026-04-10 (ipg230718.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 |
|---|---|---|---|---|
| Mark R. Lundberg | Greenville, NC | 3 | PVGPATDIS, file of 2026-04-10 | |
| Cory A. Weiss | Warren, MI | 6 | PVGPATDIS, file of 2026-04-10 | |
| Kyle R. Glover | Kinston, NC | 2 | PVGPATDIS, file of 2026-04-10 | |
| Takashi Nozaki | Montgomery, AL | 19 | 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 | F23L17/14 | PVGPATDIS, file of 2026-04-10 |
| F23J | Removal or treatment of combustion products or combustion residues; flues | F23J2211/20 | 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 |
|---|---|---|---|---|---|
| 2023-10-31 | Assignment Assignment of assignor's interest | NOZAKI, TAKASHI signed 2020-09-18 | RHEEM MANUFACTURING COMPANY ATLANTA, GA | 65399/889 | ECORSEXC, file of 2026-09-25 |
| 2023-05-01 | Assignment Assignment of assignor's interest | LUNDBERG, MARK R. signed 2023-04-27 WEISS, CORY A. signed 2023-04-27 GLOVER, KYLE R. signed 2023-05-01 | FIELD CONTROLS, L.L.C. KINSTON, NC | 63490/761 | 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.