Patents by Inventor T. Mick Sayers

T. Mick 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
    Publication number: 20130092164
    Abstract: A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed.
    Type: Application
    Filed: March 3, 2011
    Publication date: April 18, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Desmond T. Curran, Andrew Murphy, Garry J. Walker, T. Mick Sayers, Christopher P. Henderson, Bengt Kallman
  • Powered air purifying respirator with battery passivation sensing/correction and method therefor
    Patent number: 7947109
    Abstract: A powered air purifying respirator and method for directing a forced flow of air to a wearer. A battery operatively powers a fan fluidly coupled with the air flow path which exhibits, in some circumstances, a passivation. A voltage delay sensing circuit, operatively coupled to the battery, provides an indication related to the passivation. A signal may provide an indication to a user of the passivation of the power source. A correction circuit may correct such passivation.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: May 24, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: T. Mick Sayers, Desmond T. Curran