Patents by Inventor Terence M. Sayers

Terence M. Sayers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Powered air-purifying respirator
    Patent number: 10441828
    Abstract: A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: October 15, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Desmond T. Curran, Andrew Murphy, Garry J. Walker, Terence M. Sayers, Christopher P. Henderson, Bengt Kallman
  • Powered Air-Purifying Respirator
    Publication number: 20160213955
    Abstract: A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed.
    Type: Application
    Filed: April 5, 2016
    Publication date: July 28, 2016
    Inventors: Desmond T. Curran, Andrew Murphy, Garry J. Walker, Terence M. Sayers, Christopher P. Henderson, Bengt Kallman
  • METHOD OF CONTROLLING A POWERED AIR PURIFYING RESPIRATOR
    Publication number: 20120260918
    Abstract: A method of controlling a powered air purifying respirator blower system to detect a low air pressure high airflow event is disclosed. The blower system comprises a fan powered by an electric motor, controlled by an electronic control unit for delivering a forced flow of filtered air to a user. The electronic control unit has a plurality of data points representing events defining an acceptable operating range in terms of different characteristics of the blower system stored therein. The method comprises sampling a characteristic that represents the operating condition of the blower to obtain a sampled data point; comparing the sampled data point and the stored data point representing a low air-pressure high airflow event, for the same characteristic; repeating the sampling during a fixed time period, and if the comparing step indicates the low air-pressure high airflow event has been reached for the majority of the time period; activating an alarm.
    Type: Application
    Filed: October 29, 2010
    Publication date: October 18, 2012
    Inventors: Terence M. Sayers, Bengt Kallman, Andrew Murphy, Desmond T. Curran