Abstract: A sheet clipping device of the invention is designed to detachably hold one or more sheets. The sheet clipping device is formed of an elongated base member, and a plurality of gripping devices fixed to the elongated base member at a predetermined distance away from each other along the longitudinal direction thereof. The elongated base member is formed of upper and lower portions with diagonal upper and lower guide members, and a back portion situated between the upper and lower portions. Distal ends of the upper and lower guide members are vertically spaced apart from each other. Each gripping device includes an upper frictional member fixed to the upper portion, and a lower frictional member fixed to the lower portion to face to each other. When the sheets are inserted between the upper and lower frictional members through the guide members, the sheets are frictionally retained between the frictional members. The sheets can be easily attached to or removed from the clipping device.

Abstract: A removable cap of the invention is used for an elongated or writing instrument. The cap is formed of a hollow main body, a supporting member projecting laterally from a side wall of the main body, and a clip projecting from a side of the supporting member. The main body includes an end opening at one side thereof, through which the elongated instrument is removably inserted into the hollow main body. The supporting member has a through hole therein. When the cap is accidentally swallowed and held in a throat, a fluid or air path is established in the supporting member.

Abstract: A file for gripping sheets of the invention is formed of an elongated base member and a plurality of gripping devices attached to the base member. The base member is formed of upper and lower portions, a back portion situated between the upper and lower portions at a back side, and upper and lower guide members fixed to the upper and lower portions to face to each other at a front side. Each guide member diagonally extends toward the back portion. Each gripping device includes upper and lower frictional members with elasticity. The upper frictional member is fixed to the upper portion, and the lower frictional member is fixed to the lower portion to face to each other. When the sheets are inserted between the upper and lower portions, the sheets are guided by the guide members and are frictionally retained between the frictional members.