"Hand pressure vacuum plastic seal" patented

Recently, the public Kong Qinglin invented the national patent by using waste springs, needles, and other materials to invent a “manual vacuum device” that can vacuum-seal food bags, garment bags, etc., by simply pressing it by hand.

Kong Qinglin is a resident of Harbin Pharmaceutical Community in Nangang District and is 60 years old this year. In life, he is a careful person who has invented "home-operated manual treadmills" and other convenient and practical small household items for his own use. Once, he saw the advertisement of the electric vacuum on the TV. He felt that the vacuum was convenient and practical. The electric vacuumer was expensive and costly. He then invented a “manual vacuum, which was low in price and did not use electricity. "The idea of ​​the device".

The reporter saw that this "manual vacuum device" is very simple, looks like a needle tube, consists of three parts: the spring, the outer sleeve and the piston tube. The outer sleeve has a suction hole and a one-way valve at the top of the outer sleeve. Vents and check valves. The vacuum device is powered by a spring, and the air in the plastic bag can be pumped out only by pressing it by hand for four or five times. The food in the food bag that has been vacuumed is easier to keep fresh, and the clothing in the clothing bag is dampproof and insect-proof. "Manual vacuum" production costs only six or seven yuan.

At present, he is developing a series of small "manual vacuum" products, both medium-sized and large "manual vacuum." After obtaining the patent certificate, Kong Qinglin has received more than 10 letters of invitation and letter of intent from foreign companies.

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