Handheld vacuum suction device
AssigneeLock & Lock Co., Ltd.
InventorCHANG HO KIM
Life of this patent
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Abstract
A handheld vacuum suction device includes: an exterior case; a cap that includes a suction nozzle; a pressure switch unit that includes a pressure switch having a slide body configured to descend against a spring when a pressure in the cap falls below a predetermined pressure, to thereby cut off power supply, and a vertical through suction duct; a vacuum pump that includes an inlet port connected to the suction duct and sucks in air; and a control that includes an actuating switch, and is electrically connected to the vacuum pump and the pressure switch to control the actuation of the vacuum pump.
Claims14
A handheld vacuum suction device, comprising:
- an exterior case;
- a cap detachably mounted to a lower end of the exterior case, the cap including a suction nozzle having a suction port formed at its lower portion, the suction nozzle including a side exhaust hole in communication with the suction port through its side surface;
- a pressure switch unit disposed within the exterior case, the pressure switch unit including a vertical suction duct and further including a pressure switch having a slide body configured to actuate the pressure switch by descending against the elastic force of a spring when the pressure in the cap falls below a predetermined pressure;
- a vacuum pump that includes an inlet port connected to the vertical suction duct and configured to draw air through the inlet port responsive to activation;
- and
- a control unit electrically connected to the pressure switch and to the vacuum pump and including an actuating switch, the control unit configured to activate the vacuum pump responsive to actuation of the actuating switch and further configured to deactivate the vacuum pump responsive to actuation of the pressure switch.
Dependencies are inferred from the claim text.