The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2026
Filed:
May. 19, 2025
Broan-nutone Llc, Hartford, WI (US);
Robert J. Woodruff, Hartford, WI (US);
Anup Nikam, Hartford, WI (US);
Broan-NuTone LLC, Hartford, WI (US);
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.