Characterizations of wavelet bases and frames in Hilbert spaces

A belt securing device includes a housing having a pair of pivotally mounted tong arms, each having a curved arm portion extending outwardly therefrom for capturing encirlement of the belt. A spring acts on the tong arms to bias the curved arm portions to an open spaced-apart belt-releasing position. An actuating member is slidably mounted on the housing and has an actuating bar positioned between the curved arm portions of the tong arms and in the path of entry of the belt therebetween. One of the tong arms has an operating leg which extends into engagement with the actuating member so that movement of the actuating member relative the housing by the occupant or the belt as the belt is entered between the tong arms pivots the tong arm against the spring bias to carry the tong arms to a closed position of belt encirclement. Gear teeth provided on the tong arms are interengaged to effect simultaneous movement of the tong arms. A latch member is pivotally mounted on the housing and has a latch spring acting thereon to urge a latch portion into blocking engagement of abutment surfaces on the tong arms to block return of the tong arms from the closed position to the open position. The latch member has a button portion by which the seat occupant may pivot the latch member against the bias of the latch spring to move the latch portion from blocking engagement of the abutment surfaces and allow the spring to pivot the tong arms to the open position to release the belt.