US 11,432,692 B2Granted

Dust suction device utilizing beads

AssigneeTestonic Co., Ltd.

InventorWon Chul Shin

Life of this patent

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Abstract

A dust suction device includes: a main body composed of a bottom plate and a footboard, wherein a dust suction part is formed in the bottom plate, and the footboard seals the dust suction part and has suction holes formed on the upper part thereof to allow the dust to be sucked to the dust suction part; a number of springs provided on the bottom inside the bottom plate matching the number of suction holes; balls which are provided on the upper part of the springs and which are in close contact with the suction holes of the footboard and open and close the suction holes; and a suction part which is connected to a side portion of the main body through a hose and sucks the dust through the suction holes toward the dust suction part when the suction holes are open.

Claims7

Dependent claims

A dust suction device comprising:

a main body comprising a bottom plate having a dust suction portion formed therein to suck dust and a footboard disposed on top of the bottom plate to close the dust suction portion and having suction holes formed on top thereof to allow the dust to be sucked to the dust suction portion;
springs disposed on an inner bottom surface of the bottom plate and having the same number as the suction holes;
balls disposed on tops of the springs in such a manner as to come into contact with the suction holes of the footboard to open and close the suction holes;
and
a suction part connected to the side of the main body by means of a hose to allow the dust to be sucked to the dust suction portion through the suction holes at the time when the suction holes are open,
wherein the bottom plate has a plurality of partition walls spaced apart from each other on an inner bottom surface thereof to form a zigzag flow path in the dust suction portion.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/603,879Filed 10 Apr 2018
Priority: KR 10-2017-004769413 Apr 2017
Published: US 2020/0077853 A112 Mar 2020
Granted: 6 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A47L 9/0072
Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices…:…
A47L 23/22
Cleaning footwear: devices or implements resting on the floor for removing mud, dirt, or dust from footwear
A47L 23/02
Cleaning footwear: shoe-cleaning machines, with or without applicators for shoe polish
A47L 23/263
Mats or gratings combined with brushes ; Mats: with moving or driven parts, also combined with suction cleaning

Family

US 2020/0077853 A1Pre-grant publication · published 12 Mar 2020
US 11,432,692 B2This patent

From the US filing history. Foreign family members aren’t listed.

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