Abstract: The method includes the steps of: a) selecting particles with particular slenderness ratios and diameters from SiC powder to serve as selected SiC material powder; b) coating a PVA coating on particles of the selected SiC material powder so that the PVA coating and the selected SiC material powder are combined into a particulate ceramic material; c) pressing the particulate ceramic material into a ceramic base body; d) sintering the ceramic base body to form a fixed shape and forming completely continuous channels from an inside to a surface thereof by cooling; and e) infiltrating the ceramic base body with molten aluminum. The ceramic composite material made by the method includes a ceramic base body having completely continuous channels from an inside to a surface thereof; an aluminum filler filled in the channels; and an aluminum coating disposed on the ceramic base body and integratedly connecting with the aluminum filler.

Abstract: A bicycle pedal structure includes a pedal body, two reflectors, two first anti-slip plates and two second anti-slip plates. The pedal body has a first tread and a second tread. An outer edge of each of two opposite sides of the first tread and the second tread is formed with a recess. A part of each reflector is embedded in one of the recesses. The two first anti-slip plates are separately mounted on the opposite sides of the first tread and the second tread by first screws. Each first anti-slip plate presses one of the reflectors. The two second anti-slip plates are separately mounted on the opposite sides of the first anti-slip plates by second screws.

Abstract: A cleat for being attached on a sole of a cycling shoe to be engaged with a clipless pedal is disclosed. The cleat includes a front engagement portion, a rear engagement portion and a front attachment portion. A width of the rear engagement portion is greater than a width of the front engagement portion. The front attachment portion protrudes from the bottom of the front engagement portion and includes a U-shaped body and two abutment portions. The U-shaped body has two legs and an opening between outer ends of the two legs. The opening is toward the rear engagement portion. Each of the two abutment portions inward bendingly extends from the outer end of one of the legs so as to make a width of the opening between the abutment portions less than a distance between internal sides of the two legs.

Abstract: A footrest includes a base plate, two supports and two clipless pedals. The base plate has a first set of adjustment holes arranged in two rows. Each of the supports has a bottom and a pivoting seat. The bottom has two fixing holes corresponding to the first set of adjustment holes in two rows. The pivoting seat has a pivoting hole. Each of the supports is fixed onto the base plate by fastening bolts passing through the fixing holes and selective two of the first set of adjustment holes. The clipless pedals are separately screwed into the pivoting holes.

Abstract: A pedal includes a pedal body and a shaft. The pedal body has a shaft hole and a ball bearing disposed in the shaft hole. The ball bearing has an inner sleeve and an outer sleeve. The shaft has a locking end with a large diameter and a pivoting end with a small diameter. The pivoting end has a thread section screwed by a fixing nut which presses the inner sleeve of the ball bearing. The outer sleeve is fixed by a cap mounted in an opening of the shaft hole. The shaft is received in the shaft hole and fixed by the fixing nut. The shaft axially passes through the ball bearing. An end of the fixing nut is integrally formed with a flange to press the inner sleeve.

Abstract: A footrest includes a base plate, two supports and two clipless pedals. The base plate has a first set of adjustment holes arranged in two rows. Each of the supports has a bottom and a pivoting seat. The bottom has two fixing holes corresponding to the first set of adjustment holes in two rows. The pivoting seat has a pivoting hole. Each of the supports is fixed onto the base plate by fastening bolts passing through the fixing holes and selective two of the first set of adjustment holes. The clipless pedals are separately screwed into the pivoting holes.

Abstract: A multi-function racing type bicycle pedal includes a pedal body, a connecting seat and a shoe clip. The pedal body has a spindle, a fixed front and an elastic rear. An engaging surface is formed between the fixed front and the elastic rear for optionally connecting a cleat. A connecting platform is formed on an opposite side of the engaging surface and at a front side and a rear side of the spindle. The connecting platform has a locking hole. The connecting seat is a flat plate and has a through hole corresponding to the locking hole for being passed through by a screw so as to removably fasten the connecting seat onto the connecting platform. An exposed surface of the connecting seat is provided with an anti-slip pattern. The shoe clip is an arcuate body and removably disposed on the connecting seat.

Abstract: The method includes the steps of: a) selecting particles with particular slenderness ratios and diameters from SiC powder to serve as selected SiC material powder; b) coating a PVA coating on particles of the selected SiC material powder so that the PVA coating and the selected SiC material powder are combined into a particulate ceramic material; c) pressing the particulate ceramic material into a ceramic base body; d) sintering the ceramic base body to form a fixed shape and forming completely continuous channels from an inside to a surface thereof by cooling; and e) infiltrating the ceramic base body with molten aluminum. The ceramic composite material made by the method includes a ceramic base body having completely continuous channels from an inside to a surface thereof; an aluminum filler filled in the channels; and an aluminum coating disposed on the ceramic base body and integratedly connecting with the aluminum filler.

Abstract: Disclosed is a cleat for being releasably secured to a clipless pedal. The cleat includes a base plate, a front engagement member, a rear engagement member and an anti-slip pad. The base plate is used for being fastened to a sole of a shoe and has a front tip, a rear end and a middle area between the front tip and the rear end. The front engagement member is mounted on a top side of the front tip. The rear engagement member is mounted on a top side of the rear end. The anti-slip pad is mounted on a bottom side of the middle area. Both the front engagement member and the rear engagement member are higher than the base plate in hardness and the base plate is higher than the anti-slip pad in hardness.

Abstract: Disclosed is a cleat for being releasably secured to a clipless pedal. The cleat includes a base plate, a front engagement member, a rear engagement member and an anti-slip pad. The base plate is used for being fastened to a sole of a shoe and has a front tip, a rear end and a middle area between the front tip and the rear end. The front engagement member is mounted on a top side of the front tip. The rear engagement member is mounted on a top side of the rear end. The anti-slip pad is mounted on a bottom side of the middle area. Both the front engagement member and the rear engagement member are higher than the base plate in hardness and the base plate is higher than the anti-slip pad in hardness.

Abstract: The invention includes a crank, a pedal and a fastener. The crank has a flower-shaped keyed hole at an outboard end thereof. The pedal has a body and a spindle with a connecting end. The connecting end is formed with flower-shaped keys corresponding to the flower-shaped keyed hole so that the connecting end is inserted into the flower-shaped keyed hole with engagement between the flower-shaped keyed hole and the flower-shaped keys. An end surface of the connecting end is formed with a first threaded hole. The fastener passes through the flower-shaped keyed hole and screws into the first threaded hole for fixing the connecting end of the spindle to the crank.

Abstract: The invention includes a crank, a pedal and a fastener. The crank has a flower-shaped keyed hole at an outboard end thereof. The pedal has a body and a spindle with a connecting end. The connecting end is formed with flower-shaped keys corresponding to the flower-shaped keyed hole so that the connecting end is inserted into the flower-shaped keyed hole with engagement between the flower-shaped keyed hole and the flower-shaped keys. An end surface of the connecting end is formed with a first threaded hole. The fastener passes through the flower-shaped keyed hole and screws into the first threaded hole for fixing the connecting end of the spindle to the crank.

Abstract: A pedal for a bicycle or an exercise bike contains: a body. The body includes a road-bike stepping assembly, a connection assembly, two positioning protrusions secured on two sides of the connection assembly, respectively, and a plurality of locking orifices defined on the connection assembly. The connection assembly is screwed with a mountain-bike stepping assembly by way of multiple screws, the mountain-bike stepping assembly includes two engaging trenches mating with the two positioning protrusions, individually, and the mountain-bike stepping assembly also includes a plurality of through apertures cooperating with the plurality of locking orifices, respectively. The connection assembly is screwed with a coupling plate by using the multiple screws, the coupling plate includes two retaining grooves mating with the two positioning protrusions, respectively, and the coupling plate also includes multiple openings cooperating with the plurality of locking orifices, respectively.

Abstract: A bicycle pedal contains: a frame, a connection seat, an engagement block, a fitting sleeve, a fixing column, and a torsion spring. The frame includes a first orifice, a second orifice, and a trench. The connection seat includes two retaining sets, a circular tube, and two troughs. The engagement block is engaged in the trench, and the fitting sleeve is fitted with the first orifice. The fixing column is connected with a bearing and a washer and is screwed with a screw nut by using a threaded section of the fixing column. The torsion spring includes a first extending segment and a second extending segment, and the engagement block includes two shoulders facing the connection seat. Furthermore, the connection seat includes multiple protrusions facing and mating with the two shoulders so as to limit a rotation of the connection seat and the two retaining sets in the frame.

Abstract: A bicycle pedal contains: a body, a plurality of self-lubricating bearings, a connection shaft, a tapered sleeve, and a threaded sleeve. The body includes a through hole configured to accommodate the connection shaft. The connection shaft includes a first taper section and a first screwing section fitting with the tapered sleeve and the threaded sleeve. A second taper section of the tapered sleeve mates with the first tapered section of the connection shaft, the threaded sleeve includes a second screwing section screwing with the first screwing section of the connection shaft, and the threaded sleeve pushes the tapered sleeve. The body of fixed size cooperates with the tapered sleeve of fixed size, multiple connection shafts of various sizes, and multiple threaded sleeves of various sizes so as to adjust a span of the bicycle pedal, and the connection shaft is in connection with the body.

Abstract: A bicycle pedal contains: a body, a plurality of self-lubricating bearings, a connection shaft, a tapered sleeve, and a threaded sleeve. The body includes a through hole configured to accommodate the connection shaft. The connection shaft includes a first taper section and a first screwing section fitting with the tapered sleeve and the threaded sleeve. A second taper section of the tapered sleeve mates with the first tapered section of the connection shaft, the threaded sleeve includes a second screwing section screwing with the first screwing section of the connection shaft, and the threaded sleeve pushes the tapered sleeve. The body of fixed size cooperates with the tapered sleeve of fixed size, multiple connection shafts of various sizes, and multiple threaded sleeves of various sizes so as to adjust a span of the bicycle pedal, and the connection shaft is in connection with the body.

Abstract: A pedal for a bicycle or an exercise bike contains: a body. The body includes a road-bike stepping assembly, a connection assembly, two positioning protrusions secured on two sides of the connection assembly, respectively, and a plurality of locking orifices defined on the connection assembly. The connection assembly is screwed with a mountain-bike stepping assembly by way of multiple screws, the mountain-bike stepping assembly includes two engaging trenches mating with the two positioning protrusions, individually, and the mountain-bike stepping assembly also includes a plurality of through apertures cooperating with the plurality of locking orifices, respectively. The connection assembly is screwed with a coupling plate by using the multiple screws, the coupling plate includes two retaining grooves mating with the two positioning protrusions, respectively, and the coupling plate also includes multiple openings cooperating with the plurality of locking orifices, respectively.

Abstract: A bicycle pedal contains: a frame, a connection seat, an engagement block, a fitting sleeve, a fixing column, and a torsion spring. The frame includes a first orifice, a second orifice, and a trench. The connection seat includes two retaining sets, a circular tube, and two troughs. The engagement block is engaged in the trench, and the fitting sleeve is fitted with the first orifice. The fixing column is connected with a bearing and a washer and is screwed with a screw nut by using a threaded section of the fixing column. The torsion spring includes a first extending segment and a second extending segment, and the engagement block includes two shoulders facing the connection seat. Furthermore, the connection seat includes multiple protrusions facing and mating with the two shoulders so as to limit a rotation of the connection seat and the two retaining sets in the frame.