Abstract: An easily assembled inflator has a cylinder, a piston rod, a piston, an assembled seal cover and a sleeve. Because the assembled seal cover has at least two cover segments, the cover segments can be mounted around the piston rod by being connected together radially. Then the piston does not interfere with the cover segments and the sequence of the assembly of the piston and the assembled seal cover is not limited, as well. Thus, the assembly is more convenient and flexible. Besides, because the assembled seal cover has multiple cover segments, the whole assembled seal cover can bear more stress and has more room to be deformed. Then the assembled seal cover is not damaged and broken easily when pushed in to the cylinder. To sum up, the inflator as mentioned above is easy to be assembled and is not damaged easily during the assembly.

Abstract: A suspension basketball board has a backboard, a basketball hoop, and at least one hanging device. Each of the at least one hanging device has a hanger, at least one clamping panel, a mounting hole, a first joint, and a second joint. The at least one clamping panel connects to the hanger and is resilient relative to the hanger. The mounting hole is formed through the top panel of the hanger. The first joint is mounted between the connecting panel and the top panel of the hanger. The second joint is mounted between the top panel and the back panel of the hanger. Accordingly, the suspension basketball board can be horizontally and stably mounted on a door of any thickness.

Abstract: A suspension basketball board has a backboard, a basketball hoop, and at least one hanging device. Each of the at least one hanging device has a hanger, at least one clamping panel, a mounting hole, a first joint, and a second joint. The at least one clamping panel connects to the hanger and is resilient relative to the hanger. The mounting hole is formed through the top panel of the hanger. The first joint is mounted between the connecting panel and the top panel of the hanger. The second joint is mounted between the top panel and the back panel of the hanger. Accordingly, the suspension basketball board can be horizontally and stably mounted on a door of any thickness.

Abstract: A valve connector has a tubular body, a connection head, and an annular seal. The tubular body has at least one air inlet, an air outlet, and a first threaded hole. The first threaded hole is defined in the tubular body, communicates with the air outlet, and has a first thread specification and an inner diameter. The connection head is mounted detachably on the tubular body and has a second threaded hole and a recess. The second threaded hole has a second thread specification and an inner diameter larger than that of the first threaded hole. The recess is axially defined in the connection head and has an inner diameter larger than that of the second threaded hole. The annular seal is mounted in the recess in the connection head and is clamped between the tubular body and the connection head.

Abstract: A barometer with multi-functions of measurement and depressurization has a body, an intake set, an exhaust set, a depressurizing set and a pressure meter. The intake set is mounted on a side of the body. The exhaust set and the depressurizing set are mounted on the body and aligning with the intake set. The pressure meter is mounted on a top surface of the body. The body has an inner channel communicating with the intake set, the exhaust set, the depressurizing set and the pressure meter. Thus, the functions of inflating, pressure measuring, depressurization and re-inflating can be accomplished by the barometer for eliminating the inconvenience of frequent installing and removing an inflation apparatus, a depressurization device and a pressure meter.

Abstract: A basketball net testing device has a mounting frame, a delivering mechanism, a shooting mechanism, a basketball hoop, a returning mechanism, and a controller. The delivering mechanism has multiple ball seats used for delivering basketballs. The shooting mechanism has a guiding disc and two speeding rollers. The ball seats deliver the basketballs to the guiding disc. The guiding disc guides each of the basketballs to drop between the speeding rollers. The speeding rollers are driven to rotate by a second motor assembly and increase momentum of the basketball. Thus, the basketball is shot into the basketball hoop to rub against a basketball net. Then the basketball drops into the returning mechanism and rolls back into one ball seat of the delivering mechanism in order to be used for testing durability of the basketball net again.

Abstract: A valve connector has a tubular body, a connection head, and an annular seal. The tubular body has at least one air inlet, an air outlet, and a first threaded hole. The first threaded hole is defined in the tubular body, communicates with the air outlet, and has a first thread specification and an inner diameter. The connection head is mounted detachably on the tubular body and has a second threaded hole and a recess. The second threaded hole has a second thread specification and an inner diameter larger than that of the first threaded hole. The recess is axially defined in the connection head and has an inner diameter larger than that of the second threaded hole. The annular seal is mounted in the recess in the connection head and is clamped between the tubular body and the connection head.

Abstract: An air pump has a body, a piston rod and a seat cap assembly. The body has an outer protrusion and a first engaging part. The outer protrusion protrudes from the body. The first engaging part is longitudinally mounted on the outer protrusion. The piston rod is inserted into the body. The seal cap assembly has a top cover and a sleeve. The top cover is movably mounted on the piston rod. The sleeve is mounted on the body and has a retaining rib and a second engaging part. The retaining rib protrudes from an inner surface of the sleeve and abuts against a retaining surface of the outer protrusion. The second engaging part is longitudinally mounted on the inner surface of the sleeve and is engaged with the first engaging part of the body. Therefore, the relative rotation between the body and the sleeve is prevented.

Abstract: A barometer with multi-functions of measurement and depressurization has a body, an intake set, an exhaust set, a depressurizing set and a pressure meter. The intake set is mounted on a side of the body. The exhaust set and the depressurizing set are mounted on the body and aligning with the intake set. The pressure meter is mounted on a top surface of the body. The body has an inner channel communicating with the intake set, the exhaust set, the depressurizing set and the pressure meter. Thus, the functions of inflating, pressure measuring, depressurization and re-inflating can be accomplished by the barometer for eliminating the inconvenience of frequent installing and removing an inflation apparatus, a depressurization device and a pressure meter.

Abstract: A basketball net testing device has a mounting frame, a delivering mechanism, a shooting mechanism, a basketball hoop, a returning mechanism, and a controller. The delivering mechanism has multiple ball seats used for delivering basketballs. The shooting mechanism has a guiding disc and two speeding rollers. The ball seats deliver the basketballs to the guiding disc. The guiding disc guides each of the basketballs to drop between the speeding rollers. The speeding rollers are driven to rotate by a second motor assembly and increase momentum of the basketball. Thus, the basketball is shot into the basketball hoop to rub against a basketball net. Then the basketball drops into the returning mechanism and rolls back into one ball seat of the delivering mechanism in order to be used for testing durability of the basketball net again.

Abstract: A relief-valve device for an air pressure gauge has a casing, a relief-valve assembly, a valve shaft, and a push button. The casing has a connecting member, a pressure detecting member and a discharging member. The relief-valve assembly is mounted in the discharging member and has a valve seat, a first seal ring, a second seal ring and a mounting cover. The valve shaft is mounted axially slidably in the relief-valve assembly and has a shaft member and a valve head. The shaft member has a discharging notch selectively aligning with the second seal ring to allow high pressure air in an inflatable product connecting to the air pressure gauge to be discharged slowly and finely out of the relief-valve device.

Abstract: A relief-valve device for an air pressure gauge has a casing, a relief-valve assembly, a valve shaft, and a push button. The casing has a connecting member, a pressure detecting member and a discharging member. The relief-valve assembly is mounted in the discharging member and has a valve seat, a first seal ring, a second seal ring and a mounting cover. The valve shaft is mounted axially slidably in the relief-valve assembly and has a shaft member and a valve head. The shaft member has a discharging notch selectively aligning with the second seal ring to allow high pressure air in an inflatable product connecting to the air pressure gauge to be discharged slowly and finely out of the relief-valve device.

Abstract: A suspension basketball board has a backboard, a basketball hoop and at least one hanging device. The at least one hanging device is mounted on the back surface of the backboard. Each one of the at least one hanging device has a hanger and at least one clamping panel. The at least one clamping panel connects to the hanger and is resilient relative to the hanger. When the suspension basketball board is in use, the door is clamped between the backboard and the at least one clamping panel. As the at least one clamping panel connects to the hanger and is resilient relative to the hanger, the at least one clamping panel can abut doors of different thicknesses. Thus, the suspension basketball board can be horizontally and stably mounted on a door of any thickness.

Abstract: An air pump has a body, a piston rod and a seal cap assembly. The body has an outer protrusion and a first engaging part. The outer protrusion protrudes from the body. The first engaging part is longitudinally mounted on the outer protrusion. The piston rod is inserted into the body. The seal cap assembly has a top cover and a sleeve. The top cover is movably mounted on the piston rod. The sleeve is mounted on the body and has a retaining rib and a second engaging part. The retaining rib protrudes from an inner surface of the sleeve and abuts against a retaining surface of the outer protrusion. The second engaging part is longitudinally mounted on the inner surface of the sleeve and is engaged the first engaging part of the body. Therefore, the relative rotation between the body and the sleeve is prevented.

Abstract: An easily assembled inflator has a cylinder, a piston rod, a piston, an assembled seal cover and a sleeve. Because the assembled seal cover has at least two cover segments, the cover segments can be mounted around the piston rod by being connected together radially. Then the piston does not interfere with the cover segments and the sequence of the assembly of the piston and the assembled seal cover is not limited, as well. Thus, the assembly is more convenient and flexible. Besides, because the assembled seal cover has multiple cover segments, the whole assembled seal cover can bear more stress and has more room to be deformed. Then the assembled seal cover is not damaged and broken easily when pushed in to the cylinder. To sum up, the inflator as mentioned above is easy to be assembled and is not damaged easily during the assembly.

Abstract: An air pump has a body, a piston rod and a handle. The piston rod is movably inserted into the body and has a rod body, a convex ring and a first engaging part. The convex ring is laterally protruded from the rod body and has a retaining surface. The first engaging part is longitudinally mounted on the convex ring. The handle is mounted on the rod body and has a fixation trough, a retaining ring and a second engaging part. The retaining ring abuts against the retaining surface of the convex ring for preventing a relative rotation between the handle and the piston rod. The second engaging part is longitudinally mounted on the inner surface of the fixation trough and is engaged with the first engaging part of the piston rod. Therefore, the air pump increases the stability between the piston rod and the handle.