Abstract: A buffering device for a filter bottle. The buffering device is disposed on a body of the filter bottle and has a sidewall, a top, a bottom, and a chamber. The top of the buffering device is moveable up and down along the sidewall of the buffering device. The chamber is formed between the sidewall, the top, and the bottom of the buffering device, and does not communicate with an interior of the filter bottle. The chamber communicates with an exterior via an air gap for air exchange. A filter bottle having the buffering device can provide a function of anti-water-hammer, can reduce a risk of leakage at a connection between the filter bottle and a valve head, and can provide an anti-freeze effect to reduce a risk of rupture of the filter bottle.

Abstract: A water filter includes a filtering head, a filter bottle assembly, a switch member, and a quick release device. The filtering head includes a flow channel module. The filter bottle assembly includes a filter bottle. The quick release device includes a press lever, two links, and two push members. When the press lever is pivoted, the two links and the two push members are driven by the press lever to move the filter bottle simultaneously so that the filter bottle is mounted on or detached from the filtering head quickly. A switch member functions as a waterway switch to control a water supply of the filtering head and functions as a locking mechanism for locking or unlocking the quick release device.

Abstract: A backflow-preventing filter module includes a filter unit and a backflow-prevention valve. The filter unit includes a filter cartridge that has a connector formed with an annular groove, and a filter shell that defines an accommodating space and that includes a connecting head. The connecting head has an inner surrounding wall defining an annular slot. The backflow-prevention valve is sleeved on the connector, and has a fixing portion disposed in the annular groove and an abutting portion moveable between an open position, where a distal end of the abutting portion is pushed by water to be away from the inner surrounding wall so that the annular slot is not blocked, and a closed position, where the abutting portion is expanded to abut the distal end thereof against the inner surrounding wall, thereby blocking the annular slot.

Abstract: A water filter includes a filtering head, a filter bottle assembly, a switch member, and a quick release device. The filtering head includes a flow channel module. The filter bottle assembly includes a filter bottle. The quick release device includes a press lever, two links, and two push members. When the press lever is pivoted, the two links and the two push members are driven by the press lever to move the filter bottle simultaneously so that the filter bottle is mounted on or detached from the filtering head quickly. The a switch member functions as a waterway switch to control a water supply of the filtering head and functions as a locking mechanism for locking or unlocking the quick release device.

Abstract: A lens adjusting mechanism includes a fixed board, a movable board, two first sliding blocks, a first driving device and two second sliding blocks. The movable board is provided on the fixed board. The first sliding blocks, each of which has two first driving members connected to the first sliding blocks, are provided on the movable board for movement along an X axis. The first driving members drive the first sliding blocks moving along a Y axis together with the movable board. The second sliding blocks, each of which has two second driving members pivoted on the fixed board and connected to the second sliding blocks, are provided on the movable board for movement along the Y axis. The second driving members drive the second sliding blocks moving along the X axis together with the movable board.

Abstract: A hanger of an overhead projector as described. The hanger comprises a top pedestal, a suspension shaft disposed between first side plates of the top pedestal, a rotation pedestal connected to a lower end of the suspension shaft, a rotation pillar set in a circular hole of the rotation pedestal and a lower end of the suspension shaft, a universal joint shaft set between side plates of the rotation pedestal, and a bottom pedestal comprising two opposite side plates, wherein a lower end of the universal joint shaft is disposed between the side plates of the bottom pedestal. In the hanger, quick release devices are used to replace conventional fixing combinations each of which consists of a screw bolt and a screw nut to fix the top pedestal and the suspension shaft, the rotation pillar and the universal joint shaft, and the universal joint shaft and the bottom pedestal.

Abstract: A lens adjusting mechanism includes a fixed board, a movable board, two first sliding blocks, a first driving device and two second sliding blocks. The movable board is provided on the fixed board. The first sliding blocks, each of which has two first driving members connected to the first sliding blocks, are provided on the movable board for movement along an X axis. The first driving members drive the first sliding blocks moving along a Y axis together with the movable board. The second sliding blocks, each of which has two second driving members pivoted on the fixed board and connected to the second sliding blocks, are provided on the movable board for movement along the Y axis. The second driving members drive the second sliding blocks moving along the X axis together with the movable board.

Abstract: A display-supporting frame includes: first rods, each of which has first and second side walls, one of the first side walls being formed with first hole units, one of the second side walls being formed with second hole units, each of the first hole units cooperating with an adjacent one of the second hole units to define a plane transverse to the first and second side walls such that each pair of the first and second hole units are respectively located at two sides of the plane; second rods, each of which is formed with a locking hole unit; and a plurality of fasteners for fastening the first rods to the second rods through extension of each of the fasteners through a selected one of the first hole units and the second hole units in a respective one of the first rods, and into the locking hole unit in a respective one of the second rods to engage the respective one of the second rods.

Abstract: A shock-absorbing skateboard device has a main board, a downtube connected to the main board, a head tube connected to the downtube, a handle disposed on the head tube, a front wheel connected to the head tube, a rear wheel support frame disposed on a bottom of the main board, and a rear wheel connected to the rear wheel support frame. A shock-absorbing mechanism is connected to the rear wheel support frame. An adjusting mechanism is connected to the shock-absorbing mechanism.

Abstract: A skid scooter has a board, a holding seat disposed on a front portion of the board, a down tube inserted in the holding seat, a front tube connected to the down tube, a handle connected to the front tube, a front wheel disposed on a bottom of the front tube, a rear wheel disposed on a rear end of the board, a rear wheel cover disposed between the board and the rear wheel, and a rear wheel brake device disposed in the rear wheel cover.