1
Trenton A Niemeyer: Respiratory protective device. Filcon Corporation, James V Harman, February 11, 1992: US05086768 (47 worldwide citation)

The respiratory protective device minimizes dead space by locating the exhalation valve mechanism slightly spaced from, but directly in front of the mouth. The inhalation valve mechanism surrounds the streamlined flow path leading to the exhalation valve mechanism. The inhalation valve mechanism is ...


2
Blackwood Thomas, Govan Kenneth Mcintosh, Wilkie Jacqueline, Deacon Alastair Mcdonald, Grant Andrew Douglas, Stickland Matthew Thomas: Respiratory protective device.. Msa Britain, October 26, 1994: EP0621056-A1 (18 worldwide citation)

There is disclosed a respiratory protective device, and a related powered filtering device. Known devices, suffer from a number of problems, such as liability to failure, overworking and lack of fault indication. Accordingly, one aspect of the present invention provides a respiratory protective devi ...


3
Jansson David Guild: Respiratory protective device. December 2, 1975: US3923053 (18 worldwide citation)

A respiratory protective device is disclosed. The device is of a type which may be used in a noxious environment, such as a firefighting environment. The invention is characterized by a vented chamber of substantially fixed volume, two compliant breathing bags in the chamber, each having a filled vo ...


4
David Guild Jansson: Multi-user extended operation respirator. August 10, 1976: US03973562 (11 worldwide citation)

A respiratory protective device is disclosed. The device is of a type which may be used by several persons for an extended length of time in a noxious environment. The invention is characterized by a source of oxygen-rich gas, a breathing bag means, a valving system to vent and replenish the breathi ...


5
Todd A Resnick: Drink tube system for respiratory protective device. TMR E, Design IP, October 12, 2010: US07810493 (2 worldwide citation)

A retractable drink system for providing fluid delivery to a wearer with a donned protective mask covering the mouth, the drink system including a drink tube mounted within the interior of the mask, the drink tube having a retracted position and a deployed position; and an actuation coupling externa ...


6
Suzuki Masao, Sato Akihiro: Respiratory protective device. Koken, April 30, 2009: JP2009-089794 (2 worldwide citation)

PROBLEM TO BE SOLVED: To provide a respiratory protective device protecting an exhaust valve and a speaking tube provided on a face mouth part using a blower device detachably mounted to a face body.SOLUTION: This respiratory protective device is provided with the exhaust valve 3 and the speaking tu ...


7
HOWIE Robin Middlemass, ROBINSON Derek Mervyn: [fr] ENSEMBLE BOÎTE DE FILTRE ET FILTRE, [en] FILTER BOX ASSEMBLY AND FILTER UNIT. HOWIE Robin Middlemass, ROBINSON Derek Mervyn, LAWRIE IP, January 31, 2013: WO/2013/014472 (2 worldwide citation)

[en] A filter unit for use in a filter box assembly, the filter unit comprising a particulate filter layer and a gas filter layer, the particulate filter layer being configured to bias towards the gas filter layer, exerting pressure thereon. There is also described filter box assemblies (including a ...


8
Klaus Dieter Dahrendorf, Lothar Brauer, Volker Hunnebeck: Respiratory protective device in the form of an oxygen self-rescuer. Auergesellschaft, LI RUOJUAN, November 19, 1986: CN85103668 (2 worldwide citation)

The described invention is a respiratory protective device in the form of an oxygen self-rescuer containing a chemical cartridge for the generation of oxygen, the cartridge being accommodated inside the breathing bag and completely enclosed thermally. The chemical cartridge is ensheathed by a therma ...


9
Muller Manfred, Szagun Rudolf: Plug-in coupling for the releasable joining of connecting pieces to respiratory apparatuses.. Auergesellschaft, December 1, 1982: EP0065754-A1 (1 worldwide citation)

1. Plug-in connector for detachable connection of attachments (3) to respiratory protective equipment (5) with expanders (2) accommodated on the circumference of a turning ring (1), which engage behind a recess (5a) of the respiratory protective device when moved in axial direction, the expanders (2 ...


10
Robin Middlemass Howie: Low profile filter respirator. Thomas Y Kendrick, Benesch Friedlander Coplan & Aronoff, October 1, 2013: US08544469

A respiratory protective device in which a face piece (11) is located within the volume of a filter canister (10). The filter canister (10) can be in the form of a hollow section or sections which fit around all or part of the face piece (11) or on either side thereof. Contaminated air that has been ...