Abstract: An air purifying apparatus for purifying air in an isolation space is disclosed. The isolation space is surrounded by a mask body and bounded from an outer space by the mask body. The air purifying apparatus includes a main casing, an intake device and a decontamination device. The main casing is formed with an accommodating space, an inner exhausting runner and an inner intake runner. The inner exhausting runner is communicated with the isolation space and the accommodating space. The inner intake runner is communicated with isolation space and the accommodating space. The intake device and the decontamination device are disposed in the accommodating space. The decontamination device is for purifying and decontaminating air in the accommodating space.

Abstract: An isolation assembly includes a mattress pad, a supporting frame set and an isolation mask. The mattress pad is installed on a bed. The supporting frame set is disposed on the bed. The isolation mask is installed on the supporting frame set. The supporting frame set holds the isolation mask, such that the isolation mask is located around a periphery of the mattress pad, so as to form an isolation space for the mattress pad to be accommodated.

Abstract: A sport racket string includes a string which is a solid string and multiple recesses are defined in an outer surface of the string. The recesses include different sizes, depths and shapes, and are located in pre-determined ways such as lines so as to increase the friction between the balls and the string. The strings of the present invention are light in weight and allow the users to control the balls efficiently.

Abstract: A sport racket string includes a string which is a solid string and multiple recesses are defined in an outer surface of the string. The recesses include different sizes, depths and shapes, and are located in pre-determined ways such as lines so as to increase the friction between the balls and the string. The strings of the present invention are light in weight and allow the users to control the balls efficiently.

Abstract: A combination includes a frame and a net which is made of elastic monofilaments. The frame is composed of a first frame and a second frame, wherein the net has a periphery clamped between the first and second frames. The net is mounted from a top of the first frame and the second frame is connected to the first frame from an underside of the first frame. The combination can be used on seats of exercise devices, wheel chairs or packets. The net provides good ventilation and is flexible for accommodating goods.

Abstract: A seat includes a frame and a net which is made of elastic monofilaments. The frame is composed of a first frame and a second frame, wherein the net has a periphery clamped between the first and second frames. The net is mounted from a top of the first frame and the second frame is connected to the first frame from an underside of the first frame. The net of the seat is flexible and provides good ventilation.

Abstract: A string for string trimmer has a non-circular cross section and is made of degradable material such as Polylactide (PLA), Polycaprolactone (PCL) or Polyvinyl Acetate (PVA). The string is a spiral string with multiple cutting edges spirally extending along a longitudinal axis of the string.

Abstract: A string for sport rackets includes a center core having at least one first hollow portion extending in an axial direction of the center core and at least one layer wrapped around the center core. The at least one layer is composed of a plurality of first periderm wires which are spirally or alternatively wrapped on the center core.

Abstract: A method for making strings for sport rackets includes a step of extruding two wires of different materials and a step of twining the two wires along an axis to form a string. The string includes a core wire of a first material and a sun-wire of a second material is twined to the core wire. No acid-wash is needed and the two steps can be completed within one machine.

Abstract: A string for sport rackets includes a center core having at least one first hollow portion extending in an axial direction of the center core and at least one layer wrapped around the center core. The at least one layer is composed of a plurality of first periderm wires which are spirally or alternatively wrapped on the center core.

Abstract: A fishing line includes a core portion composed of multiple Polyethylene wires and a coating is mounted to the core portion and combines the Polyethylene wires together. The coating is a mixture of Polyethylene having low fusing point, silicon resin and powder of hexamethylenebis-3-(3,5-ditertiarybutyl-4-hydroxyphenyl) propionamide. The Polyethylene is melted and the mixture is extruded to combine the Polyethylene wires. The coating is then cooled to solidify.

Abstract: A spatial guide and support for attachment to a line trimmer includes a rotatable cutter head having a lawn cutting string mounted thereon and a main shaft extending upward therefrom, a moving member mounted on the main shaft of the cutter head for moving the cutter head and having a fastener secured on the main shaft of the cutter head, an auxiliary member mounted on the main shaft of the cutter head and having a mounting bracket rotatably mounted on the fastener of the moving member, a guide track secured on the mounting bracket, and an auxiliary moving wheel adjustably mounted on the guide track, and an adjusting member mounted on the mounting bracket of the auxiliary member for releasably securing the mounting bracket on the fastener of the moving member.