Storage battery with indicating device
First Claim
1. A storage battery, comprising a casing for containing an electrolyte, a window (6) in said casing for viewing the interior of the casing through said window in a lateral wall (4) of the casing, indicating means (9t) installed in said casing behind said window for indicating changes in the electrolyte liquid level and in the specific gravity of the electrolyte, said indicating means comprising a pair of guide rails (62t, 63t) vertically extending in parallel to said lateral wall in which said window is formed, first and second floats (64t and 65t) disposed between said guide rails in a position visible through said window, said floats having at their respective opposite ends guide portions slidably fitted on said pair of guide rails, said first float (64t) having a specific gravity so that the first float always floats on the liquid surface of the electrolyte for indicating an electrolyte level in said casing, said second float (65t) being disposed below said first float (64t ) and having such a buoyancy that the second float will rise and sink according to changes in the specific gravity of the electrolyte for indicating the specific gravity of the electrolyte, and said first float (64t) having a shield (130) for hiding said second float (65t) from the field of vision through said window when said second float (65t) is floating.
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Accused Products
Abstract
A battery casing for containing an electrolytic is equipped with a window (6) through which the interior of the casing (1) can be seen. An indicating device (9) for providing indications which differ according to changes in the electrolyte conditions'"'"' is installed inside the casing for viewing through the window so that such electrolyte conditions as the amount and specific gravity of the electrolyte (44) can be indicated. The indicating device has a frame member (10) separate from the casing and a float (11) supported by the frame member whereby the float can move vertically in response to a change in the electrolyte conditions. The indicating device is installed with the frame member extending along the inner surface of the window-equipped lateral wall of the casing in such a manner the the float can be seen from the outside through the window. A joining mechanism (20-23, and 36, 37: 153 and 154) is used for installing the frame member from the above in the casing. In order to prevent bubbles produced in the electrolyte from adhering to the float, an bubble preventing plate (143) may be installed to cover the float.
111 Citations
28 Claims
- 1. A storage battery, comprising a casing for containing an electrolyte, a window (6) in said casing for viewing the interior of the casing through said window in a lateral wall (4) of the casing, indicating means (9t) installed in said casing behind said window for indicating changes in the electrolyte liquid level and in the specific gravity of the electrolyte, said indicating means comprising a pair of guide rails (62t, 63t) vertically extending in parallel to said lateral wall in which said window is formed, first and second floats (64t and 65t) disposed between said guide rails in a position visible through said window, said floats having at their respective opposite ends guide portions slidably fitted on said pair of guide rails, said first float (64t) having a specific gravity so that the first float always floats on the liquid surface of the electrolyte for indicating an electrolyte level in said casing, said second float (65t) being disposed below said first float (64t ) and having such a buoyancy that the second float will rise and sink according to changes in the specific gravity of the electrolyte for indicating the specific gravity of the electrolyte, and said first float (64t) having a shield (130) for hiding said second float (65t) from the field of vision through said window when said second float (65t) is floating.
- 17. A storage battery, comprising a battery casing for containing an electrolyte, a window in a lateral casing wall of said casing for viewing the interior of the casing through said window, an indicating device (9x) for indicating changes in the state of the electrolyte in said casing, said indicating device comprising, a frame member (10x) separate from said battery casing, float means disposed in a position where it can be seen through said window (6x) and held by said frame member (10x) so that said float means is vertically movable according to changes in the state of the electrolyte, and dovetail attachment means (155) for securing said frame member (10x) to an inner surface of said lateral casing wall (4x), said dovetail attachment means (155) comprising a vertically extending dovetail (153) and a dovetail groove (154) along the inner surface of said lateral casing wall (4x) next to said window (6x).
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18. The storage battery of claim 18, wherein said casing of said battery comprises a casing body (2) and a cover (3) closing an upper opening of said battery casing body, and wherein said attaching means comprise a lower surface portion of said cover for limiting an upward displacement of said frame abutting against said lower surface portion of said cover.
Specification