Liquid level detection device
First Claim
1. A liquid level detecting apparatus having movable contacts to be displaced in accordance with the fluctuation of a liquid level, fixed electrodes slidingly contacted by the movable contact on a circuit board, a first resistance connected to the fixed electrodes, and connecting portions which terminals contact, a resistance value of the first resistance which varies when the movable contact is slidingly moved on the fixed electrodes being outputted from the terminals via the connecting portions, characterized in that at least the sections of the connecting portions which contact the terminals are covered with second resistances.
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Accused Products
Abstract
A liquid level detecting apparatus having detachable terminals and capable of holding down the formation of silver sulfide is provided. The apparatus includes a movable contact displaced in accordance with the fluctuation of a liquid level, electrodes slidingly contacted by the movable contact on a circuit board, a first resistance connected to the electrodes, and connecting portions which the terminals contact, a resistance value of the first resistance which varies when the movable contact is slidingly moved on the electrodes being outputted from the terminals via the connecting portions, wherein the sections of the connecting portions which contact at least the terminals are covered with second resistances.
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Citations
3 Claims
- 1. A liquid level detecting apparatus having movable contacts to be displaced in accordance with the fluctuation of a liquid level, fixed electrodes slidingly contacted by the movable contact on a circuit board, a first resistance connected to the fixed electrodes, and connecting portions which terminals contact, a resistance value of the first resistance which varies when the movable contact is slidingly moved on the fixed electrodes being outputted from the terminals via the connecting portions, characterized in that at least the sections of the connecting portions which contact the terminals are covered with second resistances.
Specification
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- Resources
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Current AssigneeNippon Seiki Company Limited
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Original AssigneeNippon Seiki Company Limited
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InventorsTetsuya, Sato, Tadoa, Nakagawa
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Primary Examiner(s)Williams, Hezron
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Assistant Examiner(s)SHAH, SAMIR M
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Application NumberUS10/533,900Publication NumberTime in Patent Office1,043 DaysField of Search733/13, 733/14, 733/17, 732/90.R, 733/08, 733/04.RUS Class Current73/304.00RCPC Class CodesG01F 23/36 using electrically actuated...
