VACUUM CLEANER NOZZLE
Vacuum cleaner nozzle equipped with an air inlet which opens when the nozzle is lifted by its handle. When the nuzzle gets stuck in something it can be lifted by its handle whereby the air inlet opens, air is let in, the suction decreases and the nozzle gets unstuck.
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The vacuum cleaner is a common cleaning tool. Its function is to suck in air with such velocity that dust and debris is brought with it. The air is filtered and returned while the debris is filtered off and collected in the vacuum cleaner. To collect dust and debris in a good way the air is sucked in through a nozzle. The design of this nozzle is of great importance for the function of the vacuum cleaner and a large number of different models have been developed. They are adapted for different purposes such as vacuum cleaning on smooth floors, on fluffy carpets or in difficult to reach nooks and corners. The inventiveness and the marketing of different products are almost overwhelming.
A special problem that can occur during vacuum cleaning is that loose carpets or other objects become stuck at the nozzle and are brought with it so that further vacuum cleaning is hampered or made impossible. To avoid this many vacuum cleaners are equipped with a motor control or a valve that can be opened so that the air flow through the nozzle can be regulated down minimizing the risk for blocking. The drawback of this is that the cleaning efficiency decreases when the air flow decreases. To constantly adjust the air flow to optimum is in the long run impractical.
In accordance with the present invention this problem can be solved so that air flow and dust collection capability can be kept high without the nozzle becoming stuck in a way that hampers further vacuum cleaning. The invention is based on the spontaneous reaction of the one who is vacuum cleaning when the nozzle tends to get stuck, namely to try to lift the nozzle from the surface being vacuum cleaned. With conventional equipment this usually will not help. What has got stuck is just lifted with the nozzle. In accordance with the following invention the nozzle is however so designed as to open a new pathway for the air when it is lifted. A large part of the air flow will then go through this pathway. The suction against the object that has become stuck will decrease and the object will come loose. The procedure can without effort or trouble be repeated many times over so that for instance a thin table cloth can be vacuum cleaned in situ.
The invention is exemplified in
A simple embodiment of the invention is shown in
A disadvantage with the simple design shown in
In
When describing the present invention it may be of advantage to separate between two different parts of the vacuum cleaner nozzle. One part is the one that during vacuum cleaning is in contact with the object to be vacuum cleaned. In this text it is called the suction part and has the designation 13 in
The essence of the invention is that the nozzle and its connection to the handle is designed so that an opening which reduces the suction is formed when the nozzle is lifted by its handle. This makes the reduction to occur intuitively and automatically when one lifts. The number of possible designs to accomplish that within the scoop of this invention is very large and only a small number of examples can be shown here.
In
In
Claims
1. Vacuum cleaner nozzle incorporating a connection part (12) that connects to a suction tube, that by use connects the vacuum cleaner nozzle to a vacuum cleaner, and a suction part (13), that by vacuum cleaning is in contact with the surface that is to be vacuum cleaned, characterized by that the suction part (13) and the connection part (12) are movably arranged in relation to each other so that the connection part (12) is arranged to get into a first end position which is obtained when the connection part is in a lowered position resting against the suction part (13) and a second end position which is obtained when the connection part (12) is in an uplifted position, and that an air inlet (2) between the connection part (12) and the suction part is arranged to be opened or enlarged when the connection part (12) is moved from its first to its second end position.
2. Vacuum cleaner nozzle according to claim 1 characterized by that the air inlet (2) is arranged to close completely when the connection part (12) is lowered towards the suction part (13).
3. Vacuum cleaner nozzle according to claim 1 characterized by that it is so arranged that lowering the vacuum cleaner nozzle against the surface to be vacuum cleaned during simultaneous pulling in one direction along this surface makes the connection part (12) go to such a lowered end position that the air inlet (2) is completely closed, while lowering towards the surface to be vacuum cleaned during simultaneous pulling of the vacuum cleaner nozzle in the opposite direction along this surface makes the connection part (12) go to such a lowered end position that the air inlet (2) is only partially closed.
Type: Application
Filed: Aug 26, 2009
Publication Date: Jun 9, 2011
Applicant: HEED CONSULTING AB (Goteborg)
Inventor: Bjorn Heed (Goteborg)
Application Number: 13/059,094