Face mask with exchangeable filter

Details Face mask with exchangeable filter Face mask with exchangeable filter

1977-01-19

1978-05-23

Michell, Robert W.

Surgery

Truss

Pad

A62B 710

Patent

active

040905101

ABSTRACT:
A facemask for covering the nose and mouth of a user including a perforated cover member made of leather, plastics, or another suitable material and having fastening devices opposingly secured at opposing peripheral edges thereof, an outside filter layer for intercepting coarse particles, an inside filter layer for intercepting fine particles and secured to the outside filter layer at an intermediate location thereof, each fastening device clamping the outside filter layer to the inside surface of the cover member, the inside filter layer also serving to protect the face of the wearer against the fastening device and a band secured to opposing peripheral edges of tee cover member for securing the mask to the face of the user.

REFERENCES:
patent: 1579449 (1926-04-01), Hubbell
patent: 2067026 (1937-01-01), Schwartz
patent: 2296150 (1942-09-01), Dockson et al.
patent: 2681060 (1954-06-01), Swindell

Affiliated with

Also associated with

Rating

Face mask with exchangeable filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Face mask with exchangeable filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Face mask with exchangeable filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-559476