Respirator

Patent metadata

Field	Value
Publication number	US-2022249883-A1
Application number	US-202217650016-A
Country	US
Kind code	A1
Filing date	Feb 4, 2022
Priority date	Feb 5, 2021
Publication date	Aug 11, 2022
Grant date	—

Abstract

The present invention provides a respirator. The respirator (100) has an outer housing (103), a filter, and an end cover (104). The filter is arranged on the outer housing (103). Position-limiting devices matching each other are respectively provided on the end cover (104) and the outer housing (103), and are used for fixing the filter at the outer housing (103).

First claim

What is claimed is:

1 . A respirator ( 100 ), wherein the respirator ( 100 ) has an outer housing ( 103 ), a filter, and an end cover ( 104 ), the filter being arranged on the outer housing ( 103 ), wherein position-limiting devices matching each other are respectively provided on the end cover ( 104 ) and the outer housing ( 103 ), and are used for fixing the filter at the outer housing ( 103 ).

2 . The respirator ( 100 ) according to claim 1 , wherein the position-limiting device on the outer housing ( 103 ) comprises a rod ( 105 ), the rod ( 105 ) being fixed at the filter, a plurality of ribs ( 1051 ) being formed in a longitudinal direction of the rod ( 105 ) and provided on an outer peripheral edge of the rod ( 105 ), the position-limiting devices on the end cover ( 104 ) being recesses ( 1041 ), and one end of the rib ( 1051 ) engaging with the recess ( 1041 ).

3 . The respirator ( 100 ) according to claim 2 , wherein the ribs ( 1051 ) are evenly distributed on the outer peripheral edge of the rod ( 105 ).

4 . The respirator ( 100 ) according to claim 2 , wherein an opening ( 1042 ) is provided in a middle portion of the end cover ( 104 ), and the recesses ( 1041 ) are provided on the outer periphery of the opening ( 1042 ).

5 . The respirator ( 100 ) according to claim 2 , wherein a through hole ( 3 ) is provided in the middle of the filter, and the rod ( 105 ) passes through the through hole ( 3 ).

6 . The respirator ( 100 ) according to claim 4 , wherein the respirator ( 100 ) further has a threaded fastener ( 106 ) having an unthreaded segment and a threaded segment, an aperture ( 1052 ) being provided in the middle of the rod ( 105 ), and the opening ( 1042 ) being provided with an inner thread, wherein the threaded fastener ( 106 ) is inserted into the aperture ( 1052 ) by means of the unthreaded segment thereof, and engages with the inner thread by means of the threaded segment thereof.

7 . The respirator ( 100 ) according to claim 2 , wherein the rod ( 105 ) is configured to retain a filter medium ( 1 ) of the filter.

8 . The respirator ( 100 ) according to claim 1 , wherein the end cover ( 104 ) is configured to be in the shape of a curved disc.

9 . The respirator ( 100 ) according to claim 1 , wherein the filter is configured to be an inhalation filter ( 10 ).

10 . The respirator ( 100 ) according to claim 9 , wherein the outer housing ( 103 ) has a recessed portion that is recessed relative to an outside surface thereof, and the inhalation filter ( 10 ) is accommodated in the recessed portion.

Assignees

• Honeywell Int Inc

Inventors

• Han Xiaojin
• Xiang Hongbing
• Duan Licong
• Shi Wei
• Tian Hang

Classifications

• A62B18/02

  Masks (gas-masks for animals A62B18/06; masks for welders A61F9/06) · CPC title

• A62B23/02 Primary

  for respirators · CPC title

• A62B18/08

  Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices (eye-pieces for protective goggles A61F9/02; composition of materials for the windows or other transparent parts A62D7/00) · CPC title

• A62B7/10 Primary

  with filter elements · CPC title

• B01D46/4227

  Manipulating filters or filter elements, e.g. handles or extracting tools · CPC title