A tangless buckle system for straps for watches, fitness monitors, and other limb-worn devices. In such tangless buckle systems, a buckle with a tooth is provided. In contrast to a traditional buckle, the tooth and the buckle are fixed with respect to one another, i.e., the tooth does not rotate relative to the buckle. As this new buckle design does not include the rotating tang that extends all the way across the buckle loop in a traditional buckle design, the new design may be referred to as a tangless buckle. Such buckles may provide a simpler, yet highly secure, mechanism for securing such devices.

An elastic attachment for a belt having an outer body, an inner body slidingly arranged in an inner compartment of the outer body, and an elastic element that allows the inner body to return to the inner compartment is provided. Advantageously, the elastic attachment provides longitudinal elasticity to the belt to which the elastic attachment is applied without compromising aesthetic appearance of the belt.

An elastic attachment for a belt having an outer body, an inner body slidingly arranged in an inner compartment of the outer body, and an elastic element that allows the inner body to return to the inner compartment is provided. Advantageously, the elastic attachment provides longitudinal elasticity to the belt to which the elastic attachment is applied without compromising aesthetic appearance of the belt.

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.

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.

Disclosed is a connecting buckle with a return device, including an upper cover and a lower cover disposed correspondingly, where a buckled cavity is formed between the upper cover and the lower cover, a rotating shaft, a locking device and a return device are disposed in the buckled cavity. The locking device includes an upper locking tongue and a lower locking tongue. A locking spring is disposed at the bottom of the buckled cavity, and the return device includes an upper return tongue and a lower return tongue, the upper return tongue is hinged to the lower locking tongue, the lower return tongue is hinged to the upper locking tongue, and the upper return tongue and the lower return tongue are hinged to each other. The connecting buckle with the return device has the advantages of convenience in locking and unlocking, relatively good safety and stability, and good versatility.

Disclosed is a connecting buckle with a return device, including an upper cover and a lower cover disposed correspondingly, where a buckled cavity is formed between the upper cover and the lower cover, a rotating shaft, a locking device and a return device are disposed in the buckled cavity. The locking device includes an upper locking tongue and a lower locking tongue. A locking spring is disposed at the bottom of the buckled cavity, and the return device includes an upper return tongue and a lower return tongue, the upper return tongue is hinged to the lower locking tongue, the lower return tongue is hinged to the upper locking tongue, and the upper return tongue and the lower return tongue are hinged to each other. The connecting buckle with the return device has the advantages of convenience in locking and unlocking, relatively good safety and stability, and good versatility.

Disclosed is a connecting buckle with a return device, including an upper cover and a lower cover disposed correspondingly, where a buckled cavity is formed between the upper cover and the lower cover, a rotating shaft, a locking device and a return device are disposed in the buckled cavity. The locking device includes an upper locking tongue and a lower locking tongue. A locking spring is disposed at the bottom of the buckled cavity, and the return device includes an upper return tongue and a lower return tongue, the upper return tongue is hinged to the lower locking tongue, the lower return tongue is hinged to the upper locking tongue, and the upper return tongue and the lower return tongue are hinged to each other. The connecting buckle with the return device has the advantages of convenience in locking and unlocking, relatively good safety and stability, and good versatility.

Disclosed is a connecting buckle with a return device, including an upper cover and a lower cover disposed correspondingly, where a buckled cavity is formed between the upper cover and the lower cover, a rotating shaft, a locking device and a return device are disposed in the buckled cavity. The locking device includes an upper locking tongue and a lower locking tongue. A locking spring is disposed at the bottom of the buckled cavity, and the return device includes an upper return tongue and a lower return tongue, the upper return tongue is hinged to the lower locking tongue, the lower return tongue is hinged to the upper locking tongue, and the upper return tongue and the lower return tongue are hinged to each other. The connecting buckle with the return device has the advantages of convenience in locking and unlocking, relatively good safety and stability, and good versatility.

Disclosed is a protector for a clip and line used to suspend aquaculture baskets or like equipment in water. In particular, the protector provides a sacrificial element between the clip and the line that is cheap to manufacture and easy to replace. While an application of the present invention is in oyster cultivation, it could equally well be applied to any process involving the line suspension of an article in water.