Patents by Inventor Keith K. McLaughlin
Keith K. McLaughlin 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).
-
Publication number: 20230285778Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.Type: ApplicationFiled: April 28, 2023Publication date: September 14, 2023Inventors: Keith K. Mclaughlin, Douglas D. Jensen, Sean R. Kilmer, Andrew Murphy
-
Patent number: 11666785Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.Type: GrantFiled: February 14, 2022Date of Patent: June 6, 2023Assignee: 3M Innovative Properties CompanyInventors: Keith K. Mclaughlin, Douglas D. Jensen, Sean R. Kilmer, Andrew Murphy
-
Publication number: 20220355132Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a variable speed electric motor, the motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) monitoring system loading; and (b) decreasing a speed of the electric motor when system loading reaches a predetermined value. There is also provided an air purifying respirator blower system using such a method.Type: ApplicationFiled: July 8, 2022Publication date: November 10, 2022Inventors: Sean R. Kilmer, Douglas D. Jensen, Keith K. Mclaughlin, Andrew Murphy
-
Patent number: 11413479Abstract: Methods and systems for controlling a powered air purifying respirator blower system where volumetric airflow is stepped down into predetermined discrete ranges based on system loading and desired runtime.Type: GrantFiled: April 5, 2017Date of Patent: August 16, 2022Assignee: 3M Innovative Properties CompanyInventors: Sean R. Kilmer, Douglas D. Jensen, Keith K. Mclaughlin, Andrew Murphy
-
Publication number: 20220219021Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.Type: ApplicationFiled: February 14, 2022Publication date: July 14, 2022Inventors: Keith K. Mclaughlin, Douglas D. Jensen, Sean R. Kilmer, Andrew Murphy
-
Patent number: 11278749Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.Type: GrantFiled: April 11, 2017Date of Patent: March 22, 2022Assignee: 3M Innovative Properties CompanyInventors: Keith K. Mclaughlin, Douglas D. Jensen, Sean R. Kilmer, Andrew Murphy
-
Publication number: 20220001220Abstract: The present invention relates to powered air purifying respirators (PAPRs) and methods to overcome issues associated with their use in high magnetic field environments.Type: ApplicationFiled: December 5, 2019Publication date: January 6, 2022Inventors: Keith K. McLaughlin, Douglas D. Jensen
-
Publication number: 20190126076Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.Type: ApplicationFiled: April 11, 2017Publication date: May 2, 2019Applicant: 3 Innovative Properties ComapanyInventors: Keith K. MCLAUGHLIN, Douglas D. JENSEN, Sean R. KILMER, Andrew MURPHY
-
Publication number: 20190126077Abstract: There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a variable speed electric motor, the motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) monitoring system loading; and (b) decreasing a speed of the electric motor when system loading reaches a predetermined value. There is also provided an air purifying respirator blower system using such a method.Type: ApplicationFiled: April 5, 2017Publication date: May 2, 2019Inventors: Sean R. Kilmer, Douglas D. Jensen, Keith K. Mclaughlin, Andrew Murphy
-
Patent number: 9481424Abstract: A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.Type: GrantFiled: August 4, 2015Date of Patent: November 1, 2016Assignee: 3M Innovative Properties CompanyInventors: Ronald A. Hagen, Keith K. McLaughlin
-
Publication number: 20150335921Abstract: A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.Type: ApplicationFiled: August 4, 2015Publication date: November 26, 2015Inventors: Ronald A. Hagen, Keith K. McLaughlin
-
Patent number: 9127691Abstract: A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.Type: GrantFiled: September 1, 2011Date of Patent: September 8, 2015Assignee: 3M Innovative Properties CompanyInventors: Ronald A. Hagen, Keith K. McLaughlin
-
Publication number: 20120051904Abstract: A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.Type: ApplicationFiled: September 1, 2011Publication date: March 1, 2012Inventors: Ronald A. Hagen, Keith K. McLaughlin
-
Patent number: 5773839Abstract: A cassette for use in an electronic radiographic imaging system having electronic components. The cassette includes a positioned photoreceptive medium, a light-tight frame, at least one power storage device, and an electronic interface structure for connection to electronic components within the radiographic imaging system. The cassette can also include an electrical interface structure for connection to a power source within the radiographic imaging system.Type: GrantFiled: August 18, 1995Date of Patent: June 30, 1998Assignee: Imation Corp.Inventors: Kenneth J. Krepel, Joseph A. Hoffman, Anthony B. Ferguson, Daniel J. Severson, Keith K. McLaughlin, Walter S. Federation, Wayne M. Wirth, Owen L. Nelson, John E. Potts, James E. Steffen
-
Patent number: 5637882Abstract: A detector plate for use in a radiation imaging system includes a first conductive layer, a dielectric layer, a photoconductive layer and a second conductive layer, arranged as a stack in that order. The first conductive layer and the dielectric layer are substantially transparent to radiation energy so as to allow the energy to pass therethrough to be received by the photoconductive layer. The first conductive layer has a periphery defined by a first edge and the dielectric layer has a periphery defined by a second edge, wherein the first edge is offset inward of the second edge defining a margin between the first and second edges. In use, this margin helps inhibit electrical arcing from the first conductive layer to the second conductive layer when a high voltage is applied between these two layers.Type: GrantFiled: December 1, 1995Date of Patent: June 10, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Ranjith Divigalpitiya, Bimsara W. Disanayaka, William B. Robbins, Earl L. Cook, Keith K. McLaughlin