Back to results
US 2026/0295309 A1Published application
Respiratory Mask Having a Filter Unit and a Removable Cap for the Filter Unit
AssigneeDräger Safety AG & Co. KGaA
InventorsHelge Goldenbaum, Ludwig Lorenzen
Life of this patent
Estimating the term…
Abstract
The main body of a respiratory mask bears against the face of a user in a fluid-tight manner. A filter unit is detachably connected to the main body. A cap can be placed on the filter unit and can be removed again from the filter unit. If the cap is placed, a projection of the cap engages in a corresponding receiving element of the filter unit. The placed cap protrudes beyond the filter unit and can be reversibly compressed. If the placed cap is compressed, the projection slides out of the corresponding receiving element, and the cap can be removed. Preferably, the user can breathe purified ambient air even if the cap is placed.
Claims11
An assembly comprising a respiratory mask and a cap, wherein the respiratory mask comprises:
- a main body;
- and
- a filter unit,
- wherein the main body is configured to bear against the face of a user of the respiratory mask in a fluid-tight manner,
- wherein the filter unit:
- is configured to be connected to the main body, and
- is configured to filter out at least one of particles and harmful substances from a gas mixture that flows from an environment surrounding the respiratory mask, through the filter unit, toward the main body,
- wherein the cap:
- is configured to be placed on the filter unit and to be removed again from the filter unit, and
- is reversibly deformable,
- wherein, in a first alternative, the cap comprises a first projection and the filter unit comprises a corresponding first receiving element, and, in a second alternative, the filter unit comprises a second projection and the cap comprises a corresponding second receiving element,
- wherein, if the cap is placed on the filter unit:
- in the first alternative, the first projection engages in the first receiving element, and
- in the second alternative, the second projection engages in the second receiving element,
- wherein the placed cap:
- protrudes along a compression axis beyond the filter unit;
- and
- is configured to be reversibly compressed along the compression axis,
- wherein, in the first alternative, the first projection and, in the second alternative, the second receiving element is arranged at a respective distance from the compression axis, and
- wherein, as a result of the cap being compressed along the compression axis:
- in the first alternative, the first projection slides out of the corresponding first receiving element,
- in the second alternative, the second projection slides out of the corresponding second receiving element, and
- the cap can be removed from the filter unit.
20 more elements
A method for operating an assembly comprising a respiratory mask and a cap:
- wherein the respiratory mask comprises:
- a main body;
- and
- a filter unit,
- wherein the main body is configured to bear against the face of a user of the respiratory mask in a fluid-tight manner,
- wherein the cap:
- is configured to be placed on the filter unit and to be removed again from the filter unit, and
- is reversibly deformable,
- wherein, in a first alternative, the cap comprises a first projection and the filter unit comprises a corresponding first receiving element, and, in a second alternative, the filter unit comprises a second projection and the cap comprises a corresponding second receiving element,
- wherein, if the cap is placed on the filter unit:
- in the first alternative, the first projection engages in the first receiving element, and
- in the second alternative, the second projection engages in the second receiving element,
- wherein the placed cap:
- protrudes along a compression axis beyond the filter unit;
- and
- is configured to be reversibly compressed along the compression axis,
- wherein, in the first alternative, the first projection and, in the second alternative, the second receiving element is arranged at a respective distance from the compression axis,
- wherein, as a result of the cap being compressed along the compression axis:
- the cap can be removed,
- in the first alternative, the first projection slides out of the corresponding first receiving element, and
- in the second alternative, the second projection slides out of the corresponding second receiving element,
- wherein, before starting the method, the cap is removed from the filter unit, and
- wherein the method comprises:
- placing the cap on the filter unit;
- and
- pressing the cap against the filter unit until:
- in the first alternative, the first projection engages in the first receiving element of the filter unit;
- and
- in the second alternative, the second projection engages in the second receiving element.
26 more elements
Dependencies are inferred from the claim text.