Patents
US 7947932 B2: Open coil electric resistance heater with offset coil support and method of use
- Granted
- 2011-05-24
- Filed
- 2007-11-30 application 11987542
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An open coil electrical resistance heater uses a number of offset insulators to support the coil of the heater. The offset insulators configure the run of coil in a sinusoidal shape to hold the insulators in a more secure manner and reduce vibration and noise generation during heat operation. The sinusoidal configuration of the coil also reduces the problem of shadowing of portions of the resistance wire coil.
Source: PVGPATDIS, file of 2026-04-10 (ipg110524.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 L. Sherrill | Cookeville, TN | 2 | PVGPATDIS, file of 2026-04-10 | |
| R. Devin Ridley | Cookeville, TN | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H05B | Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general | H05B3/06 | 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 |
| 2008-03-08 | Assignment Assignment of assignor's interest | RIDLEY, R. DEVIN signed 2007-11-27 SHERRILL, JAMES L. signed 2007-11-27 | TUTCO, INC. COOKEVILLE, TN | 20619/427 | 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.