Abstract: A semiconductor wafer cleaning apparatus is provided. The semiconductor wafer cleaning apparatus includes a spin base, a spindle extending through the spin base, and a clamping member covering the spin base. The spindle includes a mounting part and a supporting part disposed on the mounting part. The mounting part includes an inner projection, the supporting part includes a conical projection, and the conical projection is surrounded by the inner projection. The semiconductor wafer cleaning apparatus further includes a first sealing ring disposed between the spin base and the mounting part.

Abstract: A pair of chopsticks is disclosed, each of which includes a first body, a second body, and a locking member. The first body has at least one positioning slot, a storage space, and an opening communicating with the storage space. The second body can be completely or partly received in the storage space through the opening of the first body, wherein an outer wall of the second body has at least one protrusion which enters the positioning slot when the second body is in a predetermined position in the storage space. The locking member has a locking portion engaged with the first body, wherein the locking member is controllable to make the locking portion enter the positioning slot to prevent the protrusion therein from leaving the positioning slot whereby the chopsticks are retractable and more portable.

Abstract: A pair of chopsticks is disclosed, each of which includes a first body, a second body, and a locking member. The first body has at least one positioning slot, a storage space, and an opening communicating with the storage space. The second body can be completely or partly received in the storage space through the opening of the first body, wherein an outer wall of the second body has at least one protrusion which enters the positioning slot when the second body is in a predetermined position in the storage space. The locking member has a locking portion engaged with the first body, wherein the locking member is controllable to make the locking portion enter the positioning slot to prevent the protrusion therein from leaving the positioning slot whereby the chopsticks are retractable and more portable.

Abstract: A disc cutter for a fruit and vegetable juice extractor includes a disc body and a food disintegrating device. The disc body is rotatably mounted in the juice extractor has a top, a center and grinding blades. The grinding blades are radially formed in the top of the disc body for grinding food into juice. The food disintegrating device is attached to the top at the center of the disc body and includes a pointed body having a tapered top and two opposite edges. The tapered top has a central tip and a fluted land defined in the tapered top adjacent one of the edges. Therefore, the rotating pointed body will disintegrate efficiently the inserted food into several large pieces for the grinding blades to grind completely into juice without any food remaining on the pointed body.

Abstract: A fruit and vegetable juice extractor includes a motor base, a rotary disk rotatably mounted on the top of the motor base, a housing secured on the top of the motor base and containing a socket defined in the bottom thereof for receiving the rotary disk therein, a funnel-shaped strainer hood rotatably mounted in the housing and having a bottom wall secured to the rotary disk to rotate therewith, and a tapered wall containing a plurality of meshes formed therein, and a cutter disk rotatably mounted in the housing and secured to the bottom wall of the strainer hood to rotate therewith. A cover is mounted to the top of the housing and includes a feed tube having a first end portion extending outward from the cover, and a second end portion extending inward from the cover and located adjacent to the cutter disk, and a baffle device formed in the cover and located adjacent to the cutter disk.