Abstract: A valve connector includes a housing and a pressing device. The housing includes an operative end, a coupling end, and a through-hole extending from the operative end through the coupling end. The pressing device includes a push seat received in the through-hole and located between the lever and the coupling end and a lever abutting against the push seat and pivotably connected to the housing. The push seat includes a first passageway. The lever includes a second passageway and is operable to move the push seat. When the lever is in a release position, the first passageway does not intercommunicate with the second passageway. When the lever moves from the release position to a locking position, the push seat moves towards the coupling end, and the first passageway intercommunicates with the second passageway when the lever is in the locking position.

Abstract: A variable-pressure air pump includes a first cylinder with a first chamber and a second cylinder with a second chamber movably connected with one another. The second chamber fluidly communicable with the outside of the variable-pressure air pump selectively. A discharge device includes a connecting member and a switch movably connected with one another. The connecting member defines at least one discharge hole fluidly connecting with the second chamber. The switch has at least one flow guide portion and at least one blocking portion. The switch is movable between a first position in which the at least one flow guide portion is adjacent and opens to the at least one discharge hole and a second position in which the at least one blocking portion is adjacent to and blocks the at least one discharge hole.

Abstract: An inflation pump including a body having a cylinder and a head integrally formed with the cylinder. The cylinder includes a pressurizing space. The head includes a through-hole extending along a longitudinal axis. An intercommunication passage is disposed between and intercommunicates with the through-hole and the pressurizing space. A pressurizing unit is slidably received in the pressurizing space and is reciprocally slidable relative to the body. A nozzle unit includes a pressing device disposed in the through-hole. The pressing device includes a push seat having a check ring. The check ring includes an inner side abutting against the push seat and an outer side abutting against a portion of an inner periphery of the through-hole. The portion of the inner periphery of the through-hole is located between the intercommunication passage and the coupling end. The check ring permits air to flow only from the intercommunication passage towards the coupling end.

Abstract: An inflation pump including a body having a cylinder and a head integrally formed with the cylinder. The cylinder includes a pressurizing space. The head includes a through-hole extending along a longitudinal axis. An intercommunication passage is disposed between and intercommunicates with the through-hole and the pressurizing space. A pressurizing unit is slidably received in the pressurizing space and is reciprocally slidable relative to the body. A nozzle unit includes a pressing device disposed in the through-hole. The pressing device includes a push seat having a check ring. The check ring includes an inner side abutting against the push seat and an outer side abutting against a portion of an inner periphery of the through-hole. The portion of the inner periphery of the through-hole is located between the intercommunication passage and the coupling end. The check ring permits air to flow only from the intercommunication passage towards the coupling end.

Abstract: An inflator valve connector includes a housing, a connection assembly, a valve seat, and a pushing member. The connection assembly is rotatably arranged in the housing and includes a first connection hole adapted to connect a Presta valve and a second connection hole adapted to connect a Schrader valve. The valve seat has a first abutting portion faced to the first connection hole and adapted to abut a lock nut of the Presta valve, and a second abutting portion faced to the second connection hole and adapted to abut a valve core of the Schrader valve. The pushing member removably contacts the connection assembly and has a pushing portion adapted to enter the housing via the first connection hole and to push against the first abutting portion, causing the valve seat to move relative to the housing and to close to the second connection hole.

Abstract: A three-stage compression air pump includes a pump head and a pumping device. The pumping device includes first and second cylinders and a plunger. The first cylinder is connected with the pump head and coupled to a first piston moving in the second cylinder. The second cylinder includes a first end cap and a second end cap respectively coupled to the two ends thereof The first cylinder is inserted through the first end cap. The second end cap defines an orifice allowing outside air to flow into the second cylinder and includes a one-way valve preventing the air in the second cylinder from flowing outside the three-stage compression pump. The plunger is inserted in and movably coupled to the first cylinder and coupled to a second piston moving in the first cylinder and connected with the second end cap. The plunger is inserted through the first piston.

Abstract: A valve connector comprises a connecting member, a threaded member, a joint member, and first and second connection assemblies. The connecting member is inserted into a axial hole of threaded member to cause a abutting portion of the connecting member entering into the axial hole. The joint member forms two threaded sections at two opposite ends thereof. The two threaded sections are alternatively detachably connected to a threaded portion of the threaded member so that a first seal ring of the first connection assembly and a second seal ring of the second connection assembly are alternatively removably abutted against the abutting portion for connecting a Schrader valve and a Presta valve.

Abstract: A portable air pump includes an inflation assembly, a head seat pivotally connected to the inflation assembly, a pressure gauge disposed in the head seat, a connection assembly pivotally connected to the inflation assembly, and an axial member. The inflation assembly includes a cylinder and a piston rod moveable relative to the cylinder to compress the air inside the cylinder. One end of the head seat is provided with the containing groove, and another end of the head seat is provided with a pedal portion. The connection assembly is adapted to connect with an air-inflatable object. The axial member is mounted through the inflation assembly and the head seat and is connected to the connection assembly. The axial member is provided with an airflow channel communicating with the cylinder, the containing groove, and the connection assembly.

Abstract: A variable pressure air pump includes a first cylinder and a second cylinder movable relative to the first cylinder along a longitudinal axis. An air tube is mounted in the first and second cylinders. A mounting portion is integrally formed on a first end of the air tube. A first piston and a second piston compress air in the first and second cylinders. A connecting device is mounted to the first cylinder for coupling with an object to be inflated. An air escape device selectively seals a second chamber of the second cylinder to selectively compress the air in the second cylinder. A first check valve is mounted to the mounting portion of the air tube. A second check valve is mounted to the second piston.

Abstract: A probe card for testing dies of a substrate during a wafer sort process includes a printed circuit board (PCB) and a test site arranged to connect respectively to one of the dies during a test cycle. The test site includes a first pin connecting band and a first pin set. The first pin connecting band is connected to the PCB. The first pin set is connected to the first pin connecting band and includes a pin configuration for a testing device to perform a first type of test on a first die. The test site includes only pins in the first pin set. A number of pins in the first pin set is less than a number of pins used to perform a second type of test on the first die. The second type of test is performed at a slower processing speed than the first type of test.

Abstract: A variable pressure air pump includes a first cylinder and a second cylinder movable relative to the first cylinder along a longitudinal axis. An air tube is mounted in the first and second cylinders. A mounting portion is integrally formed on a first end of the air tube. A first piston and a second piston compress air in the first and second cylinders. A connecting device is mounted to the first cylinder for coupling with an object to be inflated. An air escape device selectively seals a second chamber of the second cylinder to selectively compress the air in the second cylinder. A first check valve is mounted to the mounting portion of the air tube. A second check valve is mounted to the second piston.

Abstract: A pressure gauge includes a base, a dial, an indicator, and an actuating device. The base defines a channel. The dial has graduations in a first region for low pressures, graduations in a second region for high pressures, and a middle graduation located between the first and second regions. The graduations in the first region are spaced at a first distance. The graduations in the second region are spaced at a second distance different from the first distance. The actuating device includes a pressure responding device and a plunger held in the channel. The plunger is abutted by the pressure responding device. The pressure responding device includes a first and second resilient member having a different modulus of elasticity and arranged in series. The shaft is rotated in response to movement of the plunger.

Abstract: The present disclosure describes methods and apparatuses for testing an integrated circuit. In some aspects, a test engine of a system-on-chip (SoC) receives a test trigger from an external test port of a multi-chip module. The multi-chip module includes the SoC and integrated circuitry. Responsive to receiving the test trigger, the test engine initiates execution of a test associated with the integrated circuitry. The test engine also generates test data associated with the test and provides the test data at the external test port of the MCM. In this manner, internal tests can be executed within the multi-chip module. In other aspects, the SoC and the integrated circuitry are not packaged together. The test engine can receive the test trigger from a test port of the SoC and initiate execution of the test. In this way, the SoC may act as a test instrument for the integrated circuitry.

Abstract: A pump head of an air pump includes a head including an outer body, a handle, and an end cap. The outer body includes a compartment extending therein. The handle is connected to a first end of the outer body. The end cap is connected to a second end of the outer body. A retaining device is received by the compartment and includes a seat actuated by the handle. An air seal ring is received by the compartment and is selectively compressed by the seat. The seat includes a cavity extending therein, at least one slot extending radially from the cavity and through the seat, and at least one retaining arm extending between two sides of the at least one slot and resiliently swingable. The air seal ring has an outer periphery section curved radially inwardly with respect to other periphery sections along a longitudinal length thereof.

Abstract: An air pump includes a pumping system, a storage tank, a discharge passage, and a valve. The discharge passage includes a first section and a second section wider than the first section. The valve is movable in the discharge passage. The valve, disposed in a first position, includes a first seal end disposed in the first section and abutting a periphery thereof and includes a second seal end disposed in the second section and abutting a periphery thereof. The valve, disposed in a second position, includes the first seal end disengaging from the first section and not abutting the periphery thereof and includes the second seal end disposed in the second section and abutting the periphery thereof. The first and second seal ends respectively have first and second cross-sectional areas. The ratio of the second cross-sectional area to the first cross-sectional area is at least 2 to 1.

Abstract: A probe card for testing dies of a substrate during a wafer sort process includes a printed circuit board (PCB) and a test site arranged to connect respectively to one of the dies during a test cycle. The test site includes a first pin connecting band and a first pin set. The first pin connecting band is connected to the PCB. The first pin set is connected to the first pin connecting band and includes a pin configuration for a testing device to perform a first type of test on a first die. The test site includes only pins in the first pin set. A number of pins in the first pin set is less than a number of pins used to perform a second type of test on the first die. The second type of test is performed at a slower processing speed than the first type of test.

Abstract: A pressure gauge includes a base, a dial, an indicator, and an actuating device. The base defines a channel. The dial has graduations in a first region for low pressures, graduations in a second region for high pressures, and a middle graduation located between the first and second regions. The graduations in the first region are spaced at a first distance. The graduations in the second region are spaced at a second distance different from the first distance. The actuating device includes a pressure responding device and a plunger held in the channel. The plunger is abutted by the pressure responding device. The pressure responding device includes a first and second resilient member having a different modulus of elasticity and arranged in series. The shaft is rotated in response to movement of the plunger.

Abstract: An air pump includes an air reservoir, a discharge passage, a valve, and a pusher. The discharge passage includes a first section and a second section wider than the first section. The valve, disposed in a first position, includes first and second seal ends respectively disposed in the first and second sections. The valve, disposed in a second position, includes the first seal end disengaging from the first section and includes the second seal end disposed in the second section. The second seal end has a greater cross-sectional area than the first seal end. The pusher is movably retained in the air reservoir and is movable between a first position spaced from the valve and a second position abutting the valve. The valve is disposed in the second position when the pusher is disposed in the second position.

Abstract: An air pump includes a pumping system, a storage tank, a discharge passage, and a valve. The discharge passage includes a first section and a second section wider than the first section. The valve is movable in the discharge passage. The valve, disposed in a first position, includes a first seal end disposed in the first section and abutting a periphery thereof and includes a second seal end disposed in the second section and abutting a periphery thereof. The valve, disposed in a second position, includes the first seal end disengaging from the first section and not abutting the periphery thereof and includes the second seal end disposed in the second section and abutting the periphery thereof. The first and second seal ends respectively have first and second cross-sectional areas. The ratio of the second cross-sectional area to the first cross-sectional area is at least 2 to 1.

Abstract: An air pump includes an air reservoir, a discharge passage, a valve, and a pusher. The discharge passage includes a first section and a second section wider than the first section. The valve, disposed in a first position, includes first and second seal ends respectively disposed in the first and second sections. The valve, disposed in a second position, includes the first seal end disengaging from the first section and includes the second seal end disposed in the second section. The second seal end has a greater cross-sectional area than the first seal end. The pusher is movably retained in the air reservoir and is movable between a first position spacing from valve and a second position abutting the valve. The valve is disposed in the second position when the pusher is disposed in the second position.