Various embodiments of web adjusters are disclosed herein. In one embodiment, a web adjuster includes a spring-loaded cam member having a bore through which a mounting shaft or pin extends for rotatably or pivotally mounting the cam member to a frame. The cam member can extend along a central axis and include a first engagement feature positioned at a first radial distance from the central axis, and a second engagement feature positioned at a second radial distance from the central axis, larger than the first radial distance. The cam member can be rotated to engage the web to restrict movement of the web. The web adjuster can also include a handle or cover portion and a strap attached to the handle for gripping by a user to adjust the web adjuster.

A closing device is provided for a container of a respirator with two container shells (2, 2) joining each other at front surfaces, with at least one tightening strap (4), which encloses a part of a container shell outer surface located at right angles to the front surfaces. Two holding elements (5, 5) are each provided with a recess (6, 6) and are formed at the free ends of the tightening strap (4). A closing element (7) is formed in a U-shaped pattern with two legs (8) and meshes with each recess (6, 6) of the holding elements (5, 5). The legs (8) of the closing element (7) can be pulled out of the recess (6, 6) of the holding elements (5, 5) to take off the tightening strap (4).

A closing device is provided for a container of a respirator with two container shells (2, 2) joining each other at front surfaces, with at least one tightening strap (4), which encloses a part of a container shell outer surface located at right angles to the front surfaces. Two holding elements (5, 5) are each provided with a recess (6, 6) and are formed at the free ends of the tightening strap (4). A closing element (7) is formed in a U-shaped pattern with two legs (8) and meshes with each recess (6, 6) of the holding elements (5, 5). The legs (8) of the closing element (7) can be pulled out of the recess (6, 6) of the holding elements (5, 5) to take off the tightening strap (4).

A closing device is provided for a container of a respirator with two container shells (2, 2) joining each other at front surfaces, with at least one tightening strap (4), which encloses a part of a container shell outer surface located at right angles to the front surfaces. Two holding elements (5, 5) are each provided with a recess (6, 6) and are formed at the free ends of the tightening strap (4). A closing element (7) is formed in a U-shaped pattern with two legs (8) and meshes with each recess (6, 6) of the holding elements (5, 5). The legs (8) of the closing element (7) can be pulled out of the recess (6, 6) of the holding elements (5, 5) to take off the tightening strap (4).

A flat strap holding apparatus includes a body and a rotating hub that rotates in an interior of the body. A gripping surface of the rotating hub is proximate to a gripping area in the interior of the body. The rotating hub is configured to rotate towards and away from the gripping area. The body has an attachment area, the attachment area having a plurality of apertures and a plurality of bars. The attachment area is located on a first side of the body and the rotating hub, and the interior is located on a second side of the body.

A buckle device includes a securing member, a frame, and at least one resilient member. The securing member is adapted to be fixedly mounted on a base. The frame includes a pivoting portion pivotally connected to the securing member to enable the frame to rotate relative to the securing member, a pair of side arms respectively connected to two opposite ends of the pivoting portion, and a forearm disposed oppositely to the pivoting portion and having opposite ends that are respectively connected to the side arms. The resilient member has a secured end portion that is secured at the securing member, and an abutting end portion in abutment with the frame for biasing the frame to rotate toward the base.