Patents
US 12631195 B1: Ventilation fan
- Granted
- 2026-05-19
- Filed
- 2025-05-19 application 19211940
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A ventilation fan having a fan housing with at least one outer wall defining an interior space, the fan housing defining an inlet and an outlet. A scroll having an outer wall defines an interior space, an inlet opening into the interior space, and an outlet spaced apart from the inlet. The scroll interior space is configured to house a fan wheel having an axis of rotation and capable of moving air from the scroll inlet to the scroll outlet. The scroll outer wall has an inner peripheral wall extending about the axis of rotation at a constant radius and an outer peripheral wall extending about the axis of rotation at a growing radius according to an expansion angle.
Source: PTBLXML, file of 2026-05-19 (ipgb20260519.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Broan-NuTone LLC 190 patents | US company or organization | Hartford, WI | PTBLXML, file of 2026-05-19 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Robert J. Woodruff | Hartford, WI | PTBLXML, file of 2026-05-19 | ||
| Anup Nikam | Hartford, WI | 8 | PTBLXML, file of 2026-05-19 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F04D | Non-positive-displacement pumps | F04D29/4226 | PTBLXML, file of 2026-05-19 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-03-13 | Assignment Assignment of assignor's interest | WOODRUFF, ROBERT J. signed 2025-05-23 NIKAM, ANUP signed 2025-05-23 | BROAN-NUTONE LLC HARTFORD, WI | 74067/516 | PASDL, file of 2026-10-15 |
| 2025-07-17 | Assignment Assignment of assignor's interest | WOODRUFF, ROBERT J. signed 2025-05-23 NIKAM, ANUP signed 2025-05-23 | BROAN-NUTONE LLC HARTFORD, WI | 71741/340 | PASDL, file of 2026-10-15 |
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.