US 7,320,144 B2
Protective mask with removable lens
Robert Katz, Montréal (Canada); and Sylvain Duchesne, Bromont (Canada)
Assigned to Procaps LP, Saint-Laurent (Canada)
Filed on May 09, 2005, as Appl. No. 11/53,860.
Claims priority of application No. 2496868 (CA), filed on Feb. 10, 2005.
Prior Publication US 2006/0176441 A1, Aug. 10, 2006
Int. Cl. A42B 3/04 (2006.01)
U.S. Cl. 2—9 20 Claims
OG exemplary drawing
 
1. A protective mask, comprising:
a face mask adapted to be worn by a user person, the face mask having a body shaped so as to generally cover a face of the user person, the body defining an opening opposite the eyes of the user person when the face mask is worn;
a removable lens having a lens portion of see-through material covering the opening so as to protect the eyes of the user person while allowing visibility of the user person therethrough, and connector portions at opposed ends of the lens portion; and
clamping devices positioned in the face mask at opposed ends of the opening, the clamping devices each having a clip, each of the clips having a front end adjacent to the lens portion, a rear end away from the lens portion, and a catch being positioned at the rear end of the respective clip, the clips each being pivotally mounted to the face mask so as to be displaceable between a locking position, in which the catch engages with the respective connector portion to releasably secure the removable lens to the face mask, and a release position, in which the catch is away from the connector portion, to enable removal of the removable lens from the face mask, wherein at least one finger is provided at the front end of the clip, for snap-fitting engagement of the clips to the face mask when the clips reach the locking position.