Abstract: A tire repair kit has two ends including a guiding tip end having a diameter gradually decreasing to form a tip head and a connection end adapted to connect with a tool and capable of being axially detaching from the tool, wherein a receiving space defined between the guiding tip end and the connection end adapted to hold a tire patch inside.

Abstract: A cartridge tool set comprising a body having a joint portion at each end of the body, the joint portion having a screw hole axially recessed on the end face of the joint portion, the screw hole having a screw surface formed on the inner surface of the screw hole; and a tool portion detachably connected to a tool member.

Abstract: A chain tool for disassembling a quick link connecting two ends of a chain includes a body having a contact portion curved along a linear direction conforming to the shape of a roller of the quick link, and an impact portion located oppositely, a blocking portion is formed on at least one of two opposite sides of the body relevant to the contact portion, each blocking portion and the contact portion extend in parallel to each other, and a groove is formed between the contact portion and each blocking portion; while the invention is in use, the contact portion abuts with the roller at an end of the chain-connecting tool, the blocking portion blocks a link plate at a side of the quick link, a user hits against the impact portion for displacing the link plates thereby disassembling the quick link, and then the grooves receive the displaced link plates.

Abstract: A chain tool has a base body being cylinder like and having a groove formed in an end of the base body, and two wall portions being formed and faced each other on two sides of the groove. The two wall portions have two side surfaces. An inner thread portion is formed on the side surfaces along a direction of groove depth, the base body is laterally penetrated by the groove along a center of inner thread portion, a bottom portion connects the two wall portions and having a through hole formed therein and being coaxial to the inner thread portion; a drive bolt having a top rod and a screw rod being movably engaged with the inner thread portion, wherein the screw rod has a drive portion placed against to the top rod, the top rod is coaxially align to the through hole.

Abstract: A bicycle anti-stripping chainring has a body, multiple wide teeth, and multiple narrow teeth. The wide teeth and the narrow teeth are alternately formed on and protrude from an outer periphery of the body at spaced intervals. Each wide tooth has a width wider than a wide of each narrow tooth. At least one of the wide teeth has two side faces inclined in a same direction and staggered a tangential direction of the body. With the arrangement of the wide teeth and the narrow teeth of the present invention, a chain can engage with the different widths of the wide teeth and the narrow teeth tightly, and this can provide a anti-stripping effect to the chain when a bicycle is in use.

Abstract: A chain tool for disassembling a chain buckle connecting two ends of a chain includes a body having a contact portion curved along a linear direction conforming to the shape of a roller of the chain buckle, and an impact portion located oppositely, a blocking portion is formed on at least one of two opposite sides of the body relevant to the contact portion, each blocking portion and the contact portion extend in parallel to each other, and a groove is formed between the contact portion and each blocking portion; while the invention is in use, the contact portion abuts with the roller at an end of the chain-connecting tool, the blocking portion blocks a link plate at a side of the chain buckle, a user hits against the impact portion for displacing the link plates thereby disassembling the chain buckle, and then the grooves receive the displaced link plates.

Abstract: A chain tool has a base body being cylinder like and having a groove formed in an end of the base body, and two wall portions being formed and faced each other on two sides of the groove. The two wall portions have two side surfaces. An inner thread portion is formed on the side surfaces along a direction of groove depth, the base body is laterally penetrated by the groove along a center of inner thread portion, a bottom portion connects the two wall portions and having a through hole formed therein and being coaxial to the inner thread portion; a drive bolt having a top rod and a screw rod being movably engaged with the inner thread portion, wherein the screw rod has a drive portion placed against to the top rod, the top rod is coaxially align to the through hole.

Abstract: A chain tool has two members each having a first edge formed with an opening to be engaged with the opening of the other member so that the two members can be pivoted with respect to each other. Each member has an opposite second edge provided with a recess and also has a guide groove in communication with the recess and the corresponding opening, wherein the recess is lightly deeper than the guide groove. Each member further has a rib extending along the corresponding first edge and projecting into the corresponding opening to form a protruding portion. When the openings of the two members are brought into engagement, the protruding portion of each member is moved along the guide groove of the other member into engagement in the recess of the other member.

Abstract: A chain tool has two members each having a first edge formed with an opening to be engaged with the opening of the other member so that the two members can be pivoted with respect to each other. Each member has an opposite second edge provided with a recess and also has a guide groove in communication with the recess and the corresponding opening, wherein the recess is lightly deeper than the guide groove. Each member further has a rib extending along the corresponding first edge and projecting into the corresponding opening to form a protruding portion. When the openings of the two members are brought into engagement, the protruding portion of each member is moved along the guide groove of the other member into engagement in the recess of the other member.

Abstract: A continuous-time band-pass ?? AD modulator subtracts an analog signal from a DA converter from an inputted analog signal, outputs an analog signal having a subtraction result to an AD converter via a continuous-time analog band-pass filter, outputs a digital signal from the AD converter to the DA converter, and outputs the same digital signal as a digital signal subjected to a band-pass ?? AD modulation processing. The highest input frequency “fin” of the inputted analog signal is substantially set to three-fourths of a sampling frequency “fs”. The DA converter is configured to convert the inputted digital signal into the analog signal, and outputs the analog signal, which is inverted or not in response to a value of the inputted digital signal and has an amplitude of substantially zero and a gradient of substantially zero at a timing k/(2fs).

Abstract: A continuous-time band-pass ?? AD modulator subtracts an analog signal from a DA converter from an inputted analog signal, outputs an analog signal having a subtraction result to an AD converter via a continuous-time analog band-pass filter, outputs a digital signal from the AD converter to the DA converter, and outputs the same digital signal as a digital signal subjected to a band-pass ?? AD modulation processing. The highest input frequency “fin” of the inputted analog signal is substantially set to three-fourths of a sampling frequency “fs”. The DA converter is configured to convert the inputted digital signal into the analog signal, and outputs the analog signal, which is inverted or not in response to a value of the inputted digital signal and has an amplitude of substantially zero and a gradient of substantially zero at a timing k/(2fs).