Abstract: According to the present disclosure, a loop string fixing device includes a stopper used for fixing a loop string, the loop string being a string curved at a middle portion to form a loop part and including first and second string extensions extending from the loop part and first and second string end portions at ends of the first and second string extensions, the stopper including a front plate that is formed with first and second through hole rows laterally spaced apart from each other and extending in a height direction, and each of the first and second through hole rows including upper through holes and lower through holes located below the upper through holes.

Abstract: The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.

Abstract: The present invention relates to a polycarbonate resin composition having excellent optical characteristics and a molded product comprising same and, more specifically, to a polycarbonate resin composition and a molded product comprising the composition, the composition comprising: as a basic resin, a polycarbonate; and, as a plasticizer component, a polyalkylene glycol adduct of an anhydrous sugar alcohol, a biomass-derived material, wherein the composition has excellent optical characteristics and processability as well as enhanced mechanical characteristics, such as tensile strength, and heat resistance.

Abstract: The present invention relates to a chest expander including a head, two operating arms of which upper end portions are coupled to the head using rotating shafts, and at least one gas spring disposed between and coupled to the two operating arms by a lower end of the gas spring being rotatably coupled to one operating arm and an upper end of the gas spring being coupled to an upper portion of the other operating arm, wherein a moving hole extending in an arc shape about the lower end of the gas spring is formed in the upper portion of the operating arm, a slider is provided to movably support the upper end of the gas spring along the moving hole, and the slider includes a stopper which fixes the slider.

Abstract: Provided is a chest expander including a pair of operational arms having upper ends rotatably coupled to a head and moving to approach or be spaced apart from each other and a pair of gas springs disposed crosswise between the pair of operational arms. In the operational arm, a longitudinal hole configured to guide one end of the gas spring to move are formed. A guide coupled to the one end of the gas spring are arranged in the longitudinal holes. A Holding device holds the guide at a selected position. Intensity of elastic force provided by the gas spring is adjustable by adjusting a position of the one end of the gas spring.

Abstract: The present invention relates to forearm fitness equipment having a first handlebar and a second handlebar which are arranged in a longitudinal direction. The first handlebar includes a twist guide part and a first spiral inclined surface formed on an end surface of one side of the twist guide part. The second handle bar includes a second spiral inclined surface on an end surface, which comes into contact with the first spiral inclined surface. The first and second spiral inclined surfaces extend spirally respective in an opposite rotational direction to each other. A spring is configured to provide an elastic force in a direction in which the first spiral inclined surface and the second spiral inclined surface come into contact with each other.

Abstract: Provided herein are a thermoplastic resin composition for a low gloss non-painting, a method for manufacturing a molded article using the same, and a molded article. The thermoplastic resin composition includes a first polycarbonate; a polysiloxane-polycarbonate copolymer; polyester; a master batch including carbon black; a heat resistance improver; and an additive. The molded article manufactured using the same has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low gloss properties.

Abstract: Disclosed are a thermoplastic resin composition for a high-brightness unpainted metallic material that has an excellent impact strength, chemical resistance, and heat resistance and exhibits an excellent metallic texture, and a molded article including the same. The thermoplastic resin composition suitably includes a polycarbonate resin; a first copolymer; a polyester resin; a copolymer having a core-shell structure and having, as a core, one or more rubber polymers selected from the group consisting of a diene-based rubber polymer, an acrylic rubber polymer, and a silicone-based rubber polymer; a heat resistant component including one or more selected from the group consisting of N-phenyl maleimide, a vinyl aromatic compound, and maleic anhydride; and metal particles.

Abstract: Disclosed are an antimicrobial composition having excellent antimicrobial and anti-fungal properties and improved fingerprint resistance and chemical resistance, and a molded article including the same. The antimicrobial composition includes a combination of an amount of about 45 to 85 wt % of a polycarbonate resin, an amount of about 10 to 36 wt % of a polyester resin, an amount of about 3 to 12 wt % of an impact modifier, an amount of about 0.2 to 2 wt % of an inorganic antimicrobial agent, and an amount of about 1 to 6 wt % of a micro powder including a fluorine-based polymer resin, based on the total weight of the antimicrobial composition.

Abstract: The present invention relates to a chest expander, wherein the chest expander includes a pair of operating arms that are connected by a rotating shaft to approach or be spaced apart from each other, a plurality of elastic force adjusting holes formed as through holes in a longitudinal direction of the operating arm, elastic members that are disposed between the operating arms to cross and configured to provide an elastic force in a direction in which the operating arms are spaced apart from each other when the operating arms approach each other, and elastic force adjusting parts that allow one end portions of the elastic members to move along the elastic force adjusting holes and to be fixed so that lengths of the elastic members between the operating arms are changed so as to adjust strength levels of the elastic forces of the elastic members.

Abstract: The present invention relates to forearm fitness equipment having a first handlebar and a second handlebar which are arranged in a longitudinal direction. The first handlebar includes a twist guide part and a first spiral inclined surface formed on an end surface of one side of the twist guide part. The second handle bar includes a second spiral inclined surface on an end surface, which comes into contact with the first spiral inclined surface. The first and second spiral inclined surfaces extend spirally respective in an opposite rotational direction to each other. A spring is configured to provide an elastic force in a direction in which the first spiral inclined surface and the second spiral inclined surface come into contact with each other.

Abstract: Provided is a chest expander including a pair of operational arms having upper ends rotatably coupled to a head and moving to approach or be spaced apart from each other and a pair of gas springs disposed crosswise between the pair of operational arms. In the operational arm, a longitudinal hole configured to guide one end of the gas spring to move are formed. A guide coupled to the one end of the gas spring are arranged in the longitudinal holes. A Holding device holds the guide at a selected position. Intensity of elastic force provided by the gas spring is adjustable by adjusting a position of the one end of the gas spring.

Abstract: Disclosed are an uncoating metallic thermoplastic resin composition invention including metallic particles at an appropriate ratio and a molded article including the same. The molded article may maintain the mechanical properties such as impact strength and fluidity at an excellent level as well as improving the appearance characteristics such as luminance characteristics (high luminance) and metallic texture. The uncoating metallic thermoplastic resin composition and the molded article thereof may be usefully applied to the molded products in fields where the characteristics of the appearance quality are importantly required, for example, cell phone housing, TV housing, computer monitor housing, automobile bumper, wheel housing, panel button portion, interior and exterior lighting lamp housings, and the like.

Abstract: The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.

Abstract: The present invention relates to a hand gripper including a first arm, a second arm, a pair of spring members, a first spring member coupling shaft, and a second spring member coupling shaft, wherein a plurality of first elastic force adjusting grooves and a plurality of second elastic force adjusting grooves, to which the first spring member coupling shaft and the second spring member coupling shaft are selectively coupled, respectively, to adjust strength of elastic force provided by the spring members, are formed in a first body of the first arm and a second body of the second arm, respectively.

Abstract: The present invention relates to a thermoplastic resin composition having excellent thermal stability and birefringence properties and to a molded article formed therefrom. In one embodiment, the thermoplastic resin composition includes: 100 parts by weight of a polycarbonate resin including a repeating unit represented by formula 1; about 0.2 parts by weight to about 15 parts by weight of an epoxy resin represented by formula 2; and about 1 part by weight to about 15 parts by weight of a phosphate-based compound, wherein formula 1 and formula 2 are as defined in the detailed description.

Abstract: Provided is a hand grip including a first and second operating arms capable of moving toward and away from each other, a first and second connection arms disposed between the first and second operating arms to be inclined, of which both ends rotatably connected to the first and second operating arms, a spring member installed to provide an elastic force in a direction interfering with approach of the first and second operating arms, a spring fixing part formed to extend upward from the first operating arm and to which one end of the spring member is fixed, a spring connection part formed to extend from an upper end of the first connection arm and to which the other end of the spring member is fixed, and a strength adjusting part formed in the spring connection part and configured to allow the other end of the spring member to move.

Abstract: A fitness equipment includes two handles each including a gripping part gripped by hands and an elastic member-coupling part to which an end portion of an elastic member configured to extend between the two handles is coupled; and a supporting base provided with a supporting surface provided at a location opposite the gripping part of the handle, and supported on a bottom surface, wherein the handle and supporting base assemblies are used to perform push-up exercises, and the elastic member is coupled between the two handles to perform chest expander exercises.