4/9/2023 0 Comments M40 gas mask![]() Assignors: DAVIES, JOHN Assigned to SELEX COMMUNICATIONS LIMITED reassignment SELEX COMMUNICATIONS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to GB0102232.6 priority Critical Priority to GB0102232A priority patent/GB2371493B/en Priority to PCT/GB2002/000173 priority patent/WO2002060537A1/en Application filed by Selex Communications Ltd filed Critical Selex Communications Ltd Publication of US20040194782A1 publication Critical patent/US20040194782A1/en Assigned to DAVIES INDUSTRIAL COMMUNICATIONS LIMITED reassignment DAVIES INDUSTRIAL COMMUNICATIONS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Selex Communications Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor John Davies Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related, expires Application number US10/626,187 Other versions US20040194782A1 Google Patents Microphone adaptor for a respiratorĭownload PDF Info Publication number US7493899B2 US7493899B2 US10/626,187 US62618703A US7493899B2 US 7493899 B2 US7493899 B2 US 7493899B2 US 62618703 A US62618703 A US 62618703A US 7493899 B2 US7493899 B2 US 7493899B2 Authority US United States Prior art keywords microphone speech respirator sound tube open Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7493899B2 - Microphone adaptor for a respirator We will include a green carrying case, one sealed 40mm cartridge and a butyl rubber second skin along with the mask.US7493899B2 - Microphone adaptor for a respirator A dual eyepiece format permits the respirator to easily interface with optics and to fold for storage. ![]() An integral drinking device permits the user to replenish fluids without having to remove the mask. An optional butyl coated nylon hood is available that covers the head and neck and is easily donned to add additional protection against chemical agents and meets MIL-SPEC-C-51251. The silicone allows for excellent fit testing results and maximum comfort while the optional butyl rubber second skin protects the face piece increasing respirator life and decreasing decontamination costs. This mask comes with several unique design features suited for first responders. The FR-M40 Full Facepiece Respirator has the capability to mount a single FR-C2A1 DIN threaded cartridge on either the right or left side. The FR-C2A1 cartridge meets military specifications MIL-C-51560 and EA-C-1704. This face piece has been NIOSH-approved with the 3M™ Cartridge FR-C2A1 or 3M™ Cartridge FR-64 for acid gases (including chlorine), CN, CS, and P100 particulate filter. There may be minor scratches on the lenses in some cases but not bad enough to interfere with clear vision. These were issued for training of our military and have been rinsed off and inspected for correct fit and function. This listing is for a lightly used M40 gas masks.
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