Patents
US 9939171 B2: Universal electric duct heater and method of use
- Granted
- 2018-04-10
- Filed
- 2014-01-20 application 14159434
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A duct heater has a unique and symmetric arrangement of an auto limit and a pair of back up limits to permit the duct heater to be mounted in a duct in a number of different orientations. The duct heater can include a diffuser screen and have a particular size with respect to an upstream piece of equipment such as a single duct variable air volume damper box so that it can be used in these types of applications as well as stand alone applications in a duct.
Source: PVGPATDIS, file of 2026-04-10 (ipg180410.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| TUTCO, LLC 16 patents | US company or organization | Cookeville, TN | TUTCO INC State business registration FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| James Patrick Lollar | Cookeville, TN | 12 | PVGPATDIS, file of 2026-04-10 | |
| Devin Ridley | Cookeville, TN | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F24H | Fluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general | F24H3/0411 | 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 |
|---|---|---|---|---|---|
| 2018-05-19 | Name change Change of name | TUTCO, INC. signed 2017-07-18 | TUTCO, LLC COOKEVILLE, TN | 47678/157 | ECORSEXC, file of 2026-09-25 |
| 2014-01-20 | Assignment Assignment of assignor's interest | LOLLAR, JAMES PATRICK signed 2014-01-17 RIDLEY, DEVIN signed 2014-01-17 | TUTCO, INC. COOKEVILLE, TN | 32005/458 | 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.