Abstract: A buckle having a frame and sliding element captures a web, cord, or other flexible element by limiting the distance between cross members of the frame and sliding element. The limited distance cinches or grabs the flexible element, keeping the flexible element from slipping. The flexible element may be wrapped around the cross member of the sliding element such that the sliding element may apply additional force against the flexible element as tension is applied to the flexible element. As such, the buckle grabs the flexible element tighter as tension is applied. The cross members of the sliding element and frame may move with respect to each other to ‘lock’ the buckle in place such that the buckle may not loosen even after tension may be removed.

Abstract: A filtration device includes a holding portion having opposed flexible sides with first and second ends, and a filter having an axis corresponding approximately to an edge of the filter, where the axis is coplanar with a planar surface of the filter. The filter may be arranged between the opposed flexible sides, and the filter may be configured to rotate about the axis such that an angle is formed between the planar surface and one of the opposed flexible sides. The filter may be configured to divide the holding portion into first and second holding parts, where the first holding part and the second holding part may be configured to hold fluid received from the first end of the holding portion and filtrate corresponding to the fluid having passed through the filter, respectively. The filtrate may be configured to exit from an opening at the second end.

Abstract: A filtration device includes a holding portion having opposed flexible sides with first and second ends, and a filter having an axis corresponding approximately to an edge of the filter, where the axis is coplanar with a planar surface of the filter. The filter may be arranged between the opposed flexible sides, and the filter may be configured to rotate about the axis such that an angle is formed between the planar surface and one of the opposed flexible sides. The filter may be configured to divide the holding portion into first and second holding parts, where the first holding part and the second holding part may be configured to hold fluid received from the first end of the holding portion and filtrate corresponding to the fluid having passed through the filter, respectively. The filtrate may be configured to exit from an opening at the second end.

Abstract: A method of manufacturing a fluid purification device is provided. The method included forming a filter receptacle, and the filter receptacle may be configured to receive a filter. Moreover, the method includes attaching the filter receptacle to one or more membrane material and sealing the one or more membrane material such that a holding portion of the filtration device is formed, the holding portion including a first holding part and a second holding part. The method also includes attaching the filter to the filter receptacle such that the attachment forms a seal.