Patents by Inventor Albert F. Zwolinsky

Albert F. Zwolinsky 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 BREATHING APPARATUS
    Publication number: 20230310907
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Powered air breathing apparatus
    Patent number: 11707638
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: July 25, 2023
    Assignee: 3M Innovative Properties Company
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • POWERED AIR BREATHING APPARATUS
    Publication number: 20200276461
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 3, 2020
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Powered air breathing apparatus
    Patent number: 10695592
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 30, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Breathing apparatus
    Patent number: 10668307
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 2, 2020
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • POWERED AIR BREATHING APPARATUS
    Publication number: 20180221691
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 9, 2018
    Inventors: Albert F. ZWOLINSKY, Richard D. MARSHALL, Christopher G. HALL
  • POWERED AIR BREATHING APPARATUS
    Publication number: 20160317845
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: June 10, 2016
    Publication date: November 3, 2016
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Improvements to powered air breathing apparatus
    Patent number: 9387299
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two points in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 12, 2016
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • IMPROVEMENTS TO POWERED AIR BREATHING APPARATUS
    Publication number: 20130319408
    Abstract: A safety breathing apparatus has a sensor for measuring the difference in pressure between two point 1a, 1b in the gas delivered to a head unit 9. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
    Type: Application
    Filed: October 27, 2010
    Publication date: December 5, 2013
    Inventors: Albert F. Zwolinsky, Richard D. Marshall, Christopher G. Hall
  • Breathing mask
    Patent number: D676127
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 12, 2013
    Assignee: Scott Health & Safety Ltd.
    Inventors: Kevin Dolan, Sally Leyland, Albert F. Zwolinsky, Robert Carr
  • Breathing mask
    Patent number: D676128
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 12, 2013
    Assignee: Scott Health & Safety Ltd.
    Inventors: Kevin Dolan, Sally Leyland, Albert F. Zwolinsky, Robert Carr
  • Breathing mask
    Patent number: D676129
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 12, 2013
    Assignee: Scott Health & Safety Ltd.
    Inventors: Kevin Dolan, Sally Leyland, Albert F. Zwolinsky, Robert Carr
  • Blower unit for breathing mask
    Patent number: D687944
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: August 13, 2013
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Christopher G. Hall, Richard D. Marshal, Sally Leyland, Robert Carr, Frank Angear
  • Breathing mask
    Patent number: D758563
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: June 7, 2016
    Assignee: Scott Health & Safety Ltd.
    Inventors: Albert F. Zwolinsky, Kevin Dolan, Sally Leyland, Robert Carr