US Patent 7537190 Holding device for electronic apparatus

A holding device is provided, including a seat affixed with two clamping pieces. At least one of the clamping pieces can slide transversely towards or backwards from the other. Inside the seat, a gear set, a stop unit and a manual unit are included so that clamping pieces can synchronously slide. The slide-close movement of the clamping pieces is not hampered, while the automatic slide-open movement of the clamping pieces is hampered, which can only be activated by manual unit. In addition, a gradual open mode is used for opening the clamping pieces to release the clamped apparatus. The present invention provides a noise-free and convenient operation.