The present invention provides a drawer apparatus capable of locking and unlocking a drawer without position control and motor stop control. A lock frame is released from the hook to be brought into an operable state by unidirectional rotation of a DC motor in an engaged state. A drawer is released from an anchor to be advanced out of the retracted position when the lock frame operates. A planetary gear unit is pushed by the lock frame. A small-diameter planetary gear is thereby shifted from the engaged state to a default state. The anchor is engaged with the drawer when the advanced drawer is pushed back to the retracted position. The hook is engaged with a lock when the advanced drawer is pushed back to the retracted position

The present invention provides a drawer apparatus capable of locking and unlocking a drawer without position control and motor stop control. A lock frame is released from the hook to be brought into an operable state by unidirectional rotation of a DC motor in an engaged state. A drawer is released from an anchor to be advanced out of the retracted position when the lock frame operates. A planetary gear unit is pushed by the lock frame. A small-diameter planetary gear is thereby shifted from the engaged state to a default state. The anchor is engaged with the drawer when the advanced drawer is pushed back to the retracted position. The hook is engaged with a lock when the advanced drawer is pushed back to the retracted position

A shelving system (10) comprising a plurality of tubular posts (12) and a plurality of rail segments (72) securable parallel to the posts (14). Each of the rail segments (72) comprises an elongate member having a U-shaped cross section such that the rail segment includes a central wall (74) and first and second side walls (76, 77) such that the posts (12) are received between the first and second side walls (76, 77) and wherein the rail segments (72) include apertures (46) along the lengths thereof to receive tracks (48) for supporting drawers (51).

A shelving system (10) comprising a plurality of tubular posts (12) and a plurality of rail segments (72) securable parallel to the posts (14). Each of the rail segments (72) comprises an elongate member having a U-shaped cross section such that the rail segment includes a central wall (74) and first and second side walls (76, 77) such that the posts (12) are received between the first and second side walls (76, 77) and wherein the rail segments (72) include apertures (46) along the lengths thereof to receive tracks (48) for supporting drawers (51).

A wafer cassette includes a case, a plurality of wafer trays, and a plurality of transmission mechanisms. The wafer trays are disposed in the case. Each of the wafer trays includes a central opening, a first groove, and a second groove. The diameter of the second groove is greater than that of the first groove. A bottom surface of the second groove is higher than that of the first groove. The first and second grooves surround the central opening. Each of the transmission mechanisms is connected to the corresponding wafer tray to move the wafer tray between a pick-up position and a received position. Since the wafer tray has grooves with different diameters, the wafer tray is capable of receiving wafers with different sizes.

A wafer cassette includes a case, a plurality of wafer trays, and a plurality of transmission mechanisms. The wafer trays are disposed in the case. Each of the wafer trays includes a central opening, a first groove, and a second groove. The diameter of the second groove is greater than that of the first groove. A bottom surface of the second groove is higher than that of the first groove. The first and second grooves surround the central opening. Each of the transmission mechanisms is connected to the corresponding wafer tray to move the wafer tray between a pick-up position and a received position. Since the wafer tray has grooves with different diameters, the wafer tray is capable of receiving wafers with different sizes.

A furniture drive for retracting a movably supported furniture part into a closed position relative to a furniture carcass, including a housing, an entrainment member which can be releasably coupled to the movable furniture part, a spring device for applying a force to the entrainment member, at least one guide path arranged or formed on the housing, wherein the entrainment member is displaceably arranged along the guide path, wherein the guide path includes a first bend for releasably locking the entrainment member, wherein the guide path includes at least one second bend for releasably locking the entrainment member, wherein at least one movably-supported switch element with a first and with a second switching position is provided, wherein the switch element, in the first switching position, blocks the first bend so that the entrainment member can move into the second bend and wherein the switch element, in the second switching position, unblocks the first bend so that the entrainment member can move into the first bend.

A furniture drive for retracting a movably supported furniture part into a closed position relative to a furniture carcass, including a housing, an entrainment member which can be releasably coupled to the movable furniture part, a spring device for applying a force to the entrainment member, at least one guide path arranged or formed on the housing, wherein the entrainment member is displaceably arranged along the guide path, wherein the guide path includes a first bend for releasably locking the entrainment member, wherein the guide path includes at least one second bend for releasably locking the entrainment member, wherein at least one movably-supported switch element with a first and with a second switching position is provided, wherein the switch element, in the first switching position, blocks the first bend so that the entrainment member can move into the second bend and wherein the switch element, in the second switching position, unblocks the first bend so that the entrainment member can move into the first bend.

An engagement assembly, a drawer, and a refrigerator having same. The engagement assembly comprises a first engagement part matching the drawer and a second engagement part matching a refrigerator body; one of the first and second engagement parts is a gear, and the other one is a rack; the rack has a tooth surface that allows the gear to travel; the rack comprises a main rack and an extension rack; when the drawer is in a closed state, the tooth surface has a first stroke length; when the drawer is in an opening process, the extension rack moves to a travel path of the gear so that the tooth surface has a second stroke length; when the drawer is in a closing process, the extension rack is reset the first stroke length is smaller than the second stroke length. The length of the tooth surface increases in the opening process.

An engagement assembly, a drawer, and a refrigerator having same. The engagement assembly comprises a first engagement part matching the drawer and a second engagement part matching a refrigerator body; one of the first and second engagement parts is a gear, and the other one is a rack; the rack has a tooth surface that allows the gear to travel; the rack comprises a main rack and an extension rack; when the drawer is in a closed state, the tooth surface has a first stroke length; when the drawer is in an opening process, the extension rack moves to a travel path of the gear so that the tooth surface has a second stroke length; when the drawer is in a closing process, the extension rack is reset the first stroke length is smaller than the second stroke length. The length of the tooth surface increases in the opening process.