Abstract: A hair grip device has a first decoration clamp device and a second decoration clamp device connected to the first decoration clamp device. The first decoration clamp device has a distal click flange, and two first elastic plates. The second decoration clamp device has a push plate, a click portion, and two second elastic plates. The distal click flange of the first decoration clamp device engages with the click portion of the second decoration clamp device. The click portion of the second decoration clamp device has a plurality of grooves. Each of the second elastic plates has a hook end portion.

Abstract: A computer scanner casing has a lower housing, an upper housing disposed on the lower housing, and four link devices disposed in the lower housing. Two slide grooves are formed in two laterals of the lower housing. Four annular seats are disposed in four inner corners of the upper housing. Each link device has an oblong hole, a round hole, and a through hole. A pin passes through the round hole to fasten the respective link device on the respective annular seat. A male fastener passes through two oblong holes of two link devices to fasten two link devices together. A female fastener engages with the male fastener. A caster is inserted through the respective through hole. A retainer button engages with the caster. The caster is inserted in the respective slide groove.