Device for indicating amount of collected dust, and electric cleaner with same

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United States of America Patent

PATENT NO 9015900
APP PUB NO 20130133154A1
SERIAL NO

13814438

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Collected-dust-amount indicating device (16) includes a pointer tube, at least a part of which is configured with a transparent material. The pointer tube includes a first end portion to which a first pressure is applied, and a second end portion to which a second pressure is applied. In the inside of the pointer tube, a pointer is disposed which is displaced by a differential pressure between the first pressure applied to the first end portion and the second pressure applied to the second end portion. Moreover, a pointer spring is disposed to be accommodated in the pointer tube such that the pointer spring biases the pointer toward larger one of the first pressure and the second pressure.

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First Claim

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Patent Owner(s)

  • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwasa, Tooru Shiga, JP 2 5

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