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:
Aug. 01, 1995
Filed:
Oct. 12, 1993
Lindgren L Chyi, Fairlawn, OH (US);
Thomas J Quick, Peninsula, OH (US);
Other;
Abstract
An apparatus for exhausting contaminant-laden air from a building area includes a monitoring device for determining when a contaminant level has exceeded a preselected value and which provides an output signal when the contaminant level has exceeded said preselected value, a motor-driven exhaust fan and associated conduit means for expelling air from the building area, and a timer-control circuit for actuating the exhaust fan for a predetermined period of time in response to an output signal from the monitor that the concentration of the contaminant has exceeded the preselected level. The apparatus allows for the removal of contaminants from an occupancy area of a building only when the level of the contaminant exceeds a preselected level, and only for a maximum predetermined period of time effective to reduce the amount of contaminant in the air to a safe level, thereby providing effective, energy efficient means for maintaining contaminant concentrations below a desired level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile