초록 ▼

An adjustable automatically controlled pneumatic pump device includes an air pump, an electric motor adapted for being energized by a power source to drive the air pump, an air hose member with an exhaust port at one end, and an other end of the hose member connected to the air pump, a pressure gaug

An adjustable automatically controlled pneumatic pump device includes an air pump, an electric motor adapted for being energized by a power source to drive the air pump, an air hose member with an exhaust port at one end, and an other end of the hose member connected to the air pump, a pressure gauge with a pressure setting pointer which can be adjusted in advance according to the predetermined air pressure desired and a pressure indicating pointer which is capable of contacting with the pressure setting pointer when the air pressure through the air hose reaches the predetermined air pressure, and an electric logic circuit device which is electrically associated with the motor and the pressure gauge and arranged in that the electric logic circuit can control the motor for pumping air into an enclosed space.

대표청구항 ▼

An adjustable automatically controlled pneumatic pump device comprising: a housing; an air pump mounted in said housing; an electric motor adapted for being energized by a power source to drive said air pump; an air hose member having an exhaust port at one end, and another end of said hose member c

An adjustable automatically controlled pneumatic pump device comprising: a housing; an air pump mounted in said housing; an electric motor adapted for being energized by a power source to drive said air pump; an air hose member having an exhaust port at one end, and another end of said hose member connected to said air pump; a pressure gauge for measuring the pressure in said air hose member which is communicated with said air hose member; said pressure gauge having a pressure indicating pointer and a pressure setting pointer, wherein, said pressure indicating pointer can be displaced proportionally with the pressure being measured during the operation of said adjustable pneumatic pump device, and said pressure setting member can be adjusted in advance according to the predetermined air pressure desired; said pressure indicating pointer being capable of contacting with said pressure setting pointer when the air pressure through said air hose reaches said predetermined air pressure; and an electric logic circuit device electrically associated with said motor, said pressure setting pointer and said pressure indicating pointer of the pressure gauge, and adapted to be connected to the power source, including an amplified circuit, a relay and a positive-logic cross-coupled NANDS device; wherein an electrical signal can flow into said positive-logic cross-coupled NANDS device when said pressure indicating pointer contacts with said pressure setting pointer so that said positive-logic cross-coupled NANDS device functions as an RS flip-flop at its output end and produces a normal output signal for actuating said relay and stopping said motor, responsive to said electric signal; said amplified circuit connecting to said output signal to determine said amplified circuit device to be in ON or OFF condition.