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:
Jun. 02, 2026
Filed:
Apr. 10, 2023
Grainproteintech Climate Control Air Treatment Us Llc, Wilmington, DE (US);
Thomas Mohr, Swartz Creek, MI (US);
GrainProteinTech Climate Control Air Treatment US LLC, Wilmington, DE (US);
Abstract
A dark-out apparatus is provided for use with a ventilation fan disposed on the wall of an agricultural building for passing ventilation air from one side to the other. The dark-out apparatus includes light-trapping media and first and second door members for holding the light-trapping media and being movable between open and closed positions and being openable away from the wall. When in the closed positions, the first and second door members cover a ventilation port of the fan, and when in the open positions, the first and second door members expose the ventilation port. When in the closed positions, distal sides of the first and second door members define an air gap. The air gap allows ventilation air to pass through, but does not allow ambient exterior light to pass through.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile