Liquid-level indicating window
AssigneeNissin Kogyo Co., Ltd.
InventorYoshinobu Mizusaki
Life of this patent
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Abstract
The present invention is directed to liquid-level indicating windows, especially suitable for reservoirs for master cylinder, which are characterized in that a container for housing a liquid is provided with a hole bored therein to which the liquid-level indicating window is made fit. The body of the liquid level device projects outside the container and the liquid-level indicating window has on its inside wall, at the liquid-level indicating section, a sign portion which is different from the other portions of the liquid-level indicating section in the light-path length and which is made of a material almost the same in refractive index as the liquid to be contained in the container.
Claims12
A liquid-level indicating device adapted to be mounted substantially horizontally in an aperture provided in the wall of a liquid container which comprises;
- a liquid level body,
- a liquid-level indicating window provided at one end of said liquid level body for projection from the wall of the liquid container a sufficient distance to provide maximum exposure to light from the front and side directions, compressible attachment means containing an enlarged end portion provided at the other end of said liquid level body, said enlarged end portion being compressed for insertion through the wall aperture and expanded for pressure engagement with the inside wall of the container,
- mounting flange disposed on the body of the indicating device for engagement with the wall of the container at said aperture, said mounting flange cooperating with said compressible attachment means to effect said mounting in said aperture, and
- a liquid level sign portion disposed on said liquid-level indicating window said liquid level sign portion having a refractive index substantially the same as that of the liquid disposed in the liquid container and having a different light refractive index than the remaining portion of said liquid-level indicating window, whereby changes in the liquid level in the container can be visually observed from outside of the container.
A liquid-level indicating device mounted in an aperture provided in the side wall of a container which is adpated to house a liquid therein which comprises
- a liquid level body,
- a liquid-level indicating window provided at one end of said liquid level body,
- compressible attachment means containing an enlarged end portion provided at the other end of said liquid level body, said enlarged end portion being compressed for insertion through the wall aperture and expanded for pressure engagement with the side wall of the container, and
- a mounting flange disposed on said body of the indicating device between said indicating window and said attachment means, said mounting flange extending from said body,
- wherein the aperture in said wall of the container contains a stepped portion for receiving said mounting flange, and said mounting flange is held in said second aperture by said attachment means, whereby the window projects substantially horizontally from the side wall of the container a sufficient distance to provide maximum exposure to light from the front and side direction.
Dependencies are inferred from the claim text.