1
David Cook, Raymond Odell, Ian T Petherbridge, Pierre Legare, Robert P Lapointe, Kenneth J Krepel, David M Blomberg, Derek S Baker, James R Betz, Thomas I Insley: Apparatus and method for breathing apparatus component coupling. 3M Innovative Properties Company, Karl G Hanson, James L Young, June 10, 2003: US06575165 (76 worldwide citation)

The present invention relates to a fan-forced positive pressure breathing apparatus commonly known as a Powered Air Purifying Respirators (PAPR) system, and specifically concerns the connecting of the breathing components of such equipment. The invention is a method and apparatus for rapid engagemen ...


2
John Maruscak, Pierre Legare, Thomas C Welch Jr: Plastic scrim. Her Majesty the Queen in right of Canada represented by the Minister of National Defence of Canadian Government, Nixon & Vanderhye, August 13, 1991: US05038775 (36 worldwide citation)

The invention disclosed is an improved scrim means for use in a breathing gas filter assembly which includes a pleated web filter medium. The improved scrim means is of a non-woven microorganism resistant synthetic polymeric material of sufficient rigidity to provide substantially continuous support ...


3
Paul A Greer, Joseph D Slack, Pierre Legare: Conformal filter cartridges and methods. 3M Innovative Properties Company, Karl G Hanson, September 2, 2008: US07419526 (35 worldwide citation)

Conformal filter cartridges, filtering apparatus using the conformal filter cartridges, and methods of manufacturing the conformal filter cartridges are disclosed. The conformal filter cartridges may include a bed of filter material between a pair of support plates, wherein the major surfaces of the ...


4
Pierre Legare, Britton G Billingsley: Filter cartridge having central plenum and housing sidewall. 3M Innovative Properties Company, Karl G Hanson, June 11, 2013: US08460423 (16 worldwide citation)

A filter cartridge 12 that has a first and second layer of filter media 38, 40 that each have first and second major surfaces 32, 44 and a perimeter 46 and that each contain active particulate that is bonded together. A plenum 42 is disposed between the first and second layers of filter media 38, 40 ...


5
Lisa M Croll, Pierre Legare, David E Livingstone: Portable blower system. 3M Innovative Properties Company, Anna A Wetzels, July 6, 2010: US07748381 (15 worldwide citation)

A portable cooling or respiratory blower system of the type carried by a user's body includes a housing having two air flow chambers. An impeller is rotatably disposed between the two air flow chambers and includes a base wall that places the two air flow chambers in non-fluidic communication when t ...


6
Michael Pereira, Anthony Ricci, Pierre Legare: Respiratory filter. Sampson & Associates, June 25, 2002: US06408845 (15 worldwide citation)

An improved respirator filter assembly includes an integral fit seal check mechanism easily controlled by the user. Upon release, the seal check mechanism permits free airflow through the filter assembly. The seal check mechanism includes an air passageway having a sealing rim and a blocking member ...


7
Pierre Legare, David W Pike: Filter sealing apparatus. Her Majesty the Queen in right of Canada represented by the Minister of National Defence of Her Majesty s Canadian Government, Jerry A Miller, November 5, 1991: US05062874 (9 worldwide citation)

A filter canister assembly utilizes a sealant deflector to seal a particulate filter to the canister wall, even after the canister is sealed. The canister housing has a wall and an aperture with a particulate filter disposed therein. The particulate filter has an edge adjacent the wall, and is desig ...


8
Pierre Legare: Synthetic filter media and method for manufacturing same. Minnesota Mining and Manufacturing Company, Ridout & Maybee, November 9, 1999: US05979030 (7 worldwide citation)

A composite filter media (100 includes a meltblown/spunbond composite fiber material and a mixed fiber triboelectric material are preferably attached to each other by needling the mixed fiber material with the meltblown/spunbond composite fiber material. A netting (104) is then attached by preferabl ...


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Britton G Billingsley, Pierre Legare: Method of making filter cartridge having roll-based housing sidewall. 3M Innovative Properties Company, March 24, 2015: US08984753 (6 worldwide citation)

A method of making a filter cartridge, which method includes: (a) providing first and second filter media layers that each contain active particulate that is bonded together and that each comprise a perimeter; (b) stacking the filter media layers in a spaced apart relationship; and (c) securing a ro ...