The present invention relates to the field of buckles, and more specifically, to fasteners for adjustably interconnecting belts or straps. The present invention describes a buckle that achieves increased stability and load capacity for loads applied to various belts or straps and mounted with a buckle.

A belt buckle provided includes: a hollow retaining member including an entry end and an opposite exit end; a rotary member pivotally connected to two ears of the exit end and including a recess, a pulling portion protrudes from one side of the recess, an engaging portion is formed at an opposite another side of the recess, and an abutting portion is provided on an outer surface of the rotary member; a pivot disposed in the recess and having two ends inserted through the ears; a spring sleeved onto the pivot and disposed in the recess to push the abutting portion towards the two ears of the exit end; and an engaging member pivotally attached to the two ears of the entry end.

A web-adjustment housing of a buckle member may include a receiving crossbar, a securing crossbar, and a strut. The receiving crossbar may include a ledge that extends in a first direction at a first angle with respect to a plane that contains or is parallel to a longitudinal axis, and first retaining members configured to securely engage webbing. The securing crossbar may include a surface that extends in a second direction at a second angle with respect to the plane, and second retaining members extending from the surface configured to securely engage the webbing. A receiving channel may be defined between the receiving crossbar and the securing crossbar. A release channel may be defined between the securing crossbar and the strut. The receiving channel and the release channel may define at least a portion of a web channel configured to adjustably retain the webbing.

A metal buckle includes a metal receptacle member and a metal clasp. The metal receptacle member includes a first opening and second opening. The metal clasp is configured to be inserted into the first opening of the metal receptacle member, and includes a base member, a locking device and a spring. The spring is configured to bias the locking device outwardly from the base member, and the locking device is configured to engage the second opening of the metal receptacle.

A buckle having an adjustable loop end forming a primary plane with opposing side walls. The adjustable loop end has a central bar positioned between a first strap opening and a second strap opening. A pair of slots operable to receive the terminal ends of the central bar are recessed into the interior surface of the opposing side walls with the bottom edges of the slots being longer than the top edges. A pair of tabs on opposite ends of the central bar extend outward from the central bar along a longitudinal axis of the primary plane and towards the second strap or belt opening. Optionally, a protrusion extends from a lower surface of the fixed loop end wherein the protrusion is positioned at a right angle with respect to a vertical axis of the primary plane.

Disclosed are belt adjustment systems, particularly for wearing around a user's waist, that permit a continuum of belt loop sizes or a larger selection of belt loop sizes. The belt adjustment system includes an elongate belt member having a first end, a second end and a series of teeth positioned on an inner surface near the second end and a fixation member having first and second adjustment elements.

A web-connecting assembly may include a connecting member and a securing member. The connecting member may include a connecting stud and a first web channel. The first web channel is configured to retain a first web. The securing member may include a housing defining a retaining chamber, a button pivotally secured to the housing, and a second web channel. The second web channel is configured to retain a second web. The button is configured to be moved between an open position in which a portion of the connecting stud is able to move into and out of the retaining chamber, and a closed position in which the button securely traps the portion of the connecting stud within the retaining chamber. The connecting member is securely connected to the securing member when the button securely traps the portion of the connecting stud within the retaining chamber.

An adjustable-length tensile member, for example, a strap for a wearable pack, can include a fastener member defining first and second apertures and a cross-member positioned therebetween. A strap can extend through the first aperture in a first direction, over the cross-member and through the second aperture in a direction opposite to the first direction. A cover plate can matingly engage with the fastener member to obscure a segment of the strap from view. Wearable packs can incorporate such adjustable-length tensile members. Methods for assembling such adjustable-length tensile members are also disclosed.

A link or slide for a garment strap includes mutually parallel longitudinal bars and a pair of opposing transverse bars each forming a juncture with ends of the longitudinal bars. The transverse bars curve forward from the junctures away from the rear of the longitudinal bars, reducing potential discomfort to an active wearer. In embodiments, the link is formed of resilient material and the link thickness tapers to a minimum at the junctures, forming flexible zones which provide added comfort. In additional embodiments, the longitudinal bars have angled edges adjoining slots through which the garment strap passes. The angled edges resist undesirable motion of the strap, especially while the wearer is exercising.

A power supply for an item of personal protective equipment and a method and system for removably coupling the power supply to the item of personal protective equipment, such as a respirator mask. The removable battery cartridge is attached to the mask body in the user's chin area, below the location at which a respirator would be or is attached. Thus, the power supply (battery cartridge) is out of the user's way and is at a location that allow the user to couple or uncouple the cartridge from the mask quickly and easily, even when the user is wearing gloves. In one embodiment, a mask body includes a lower surface and power supply that is removably couplable to the mask body lower surface.