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:
Nov. 24, 2015
Filed:
Oct. 07, 2011
Praveen Kumar Palacharla, Hyderabad, IN;
Madan Mohan Reddy Dumpala, Hyderabad, IN;
Swapnil Gopal Patil, Bhiwandi, IN;
Mehabube Rabbanee Shaik, Hyderabad, IN;
Praveen Kumar Palacharla, Hyderabad, IN;
Madan Mohan Reddy Dumpala, Hyderabad, IN;
Swapnil Gopal Patil, Bhiwandi, IN;
Mehabube Rabbanee Shaik, Hyderabad, IN;
Honeywell International Inc., Morristown, NJ (US);
Abstract
A self-calibrating powered air purifying respirator (PAPR). The PAPR comprises an electric motor mechanically coupled to a blower; an air flow sensor, and a controller coupled to the air flow sensor and to the electric motor. The controller is configured to automatically execute a one-time self-calibration by driving the electric motor to a predefined operation point, receiving an indication from the air flow sensor, determining a reference parameter based on the indication from the air flow sensor, and storing the reference parameter, wherein after completion of the one-time self-calibration the controller controls the electric motor based on the stored reference parameter.