Abstract: An improved brake fluid reservoir is disclosed. The reservoir is made from polymethylpentene and includes 10-20% by weight glass fibers as an opacifying agent. A translucent reservoir is obtained which has the highly desirable feature of visibility of the fluid level in the reservoir without providing a clear view of the fluid.

Abstract: A liquid level sensing means for providing a continuous indication of liquid level or liquid content of a container comprising an elongated light conducting element adapted for being received into a liquid having first and second ends and a surface which provides an interface with the liquid for measuring liquid levels between the ends of the conducting element. A source provides radiation to the conducting element at one end, and detecting means for sensing radiation transmitted by the conducting element is positioned at the end of the conducting element opposite to the source of radiation and provides an output signal responsive to the intensity of the sensed radiation. The conducting element is transparent to radiation, has an index of refraction which is greater than that of the liquid which is to have its level measured, and has contoured regions on at least a portion of its surface.

Abstract: A measuring container for pourable ingredients which comprises a body having relatively uniform transparent walls, a flat bottom wall and a top having a pourable opening, spaced apart graduated indicia located on the transparent walls with each indicia provided at the point of intersection of a plane coincident with the horizontal level of ingredients filling the container up to the said horizontal level when the flat bottom of the container is on a horizontal plane and a plane coincident with the pour level of the ingredients when the container is tilted at an angle such that the ingredients will pour from the pour opening.

Abstract: A dipstick assembly including an alignment guide comprising a fluid level indicating instrument having a rigid arcuate portion and an access passageway having a rigid arcuate portion of the same arcuate contour as the arcuate portion of the fluid level indicating instrument for preventing the rotation of the fluid level indicating instrument when it is received within the access passageway.

Abstract: An automobile crankcase oil level indicator in ready reach of the vehicle driver has its main components molded from plastics and constructed for ease of assembly and installation. A minimum number of parts are employed to minimize manufacturing costs and to make the device compatible with mass production techniques. A unitized piston, piston rod and piston seal is employed in the device along with a unique simplified coupling between the main cup or housing and the face plate.

Abstract: An indicator providing a visual indication of the level within a rinse aid dispenser tank for dishwashers, consisting of a U-tube containing an indicator liquid having one leg in communication with the lowermost region of the tank and with the other disposed adjacent a viewing window. Air pressure generated in the connecting tubing by the relative liquid level in the tank acts to control the position of the liquid in the U-tube to provide a level indication at the viewing window. The air column intermediate the tank and the U-tube section is vented each time the door is opened to avoid variations in indication occurring with temperature and atmospheric pressure changes. The indicator liquid is introduced through a fill and drain tube extending from the upper end of the leg into the dispenser tank, such that a calibrated volume of liquid is introduced by flow into the U-tube from the tank and drain back of the excess over the calibrated volume.

Abstract: A viewing rod in which a visual change in color at the transmitting end of the rod indicates that the level of the liquid within a receptacle has reached the transmitting end.

Abstract: In a reservoir comprising a container for liquid at least one portion of the top wall of the container is depressed to form a window, the depressed portion and at least a part of the surrounding area being transparent or translucent so that the reservoir can be filled with a liquid until the liquid is in visible contact on the under surface of the window with the surrounding part untouched.

Abstract: A liquid level indicator for providing a visual indication when the level of liquid contained in a movably mounted tank is at or above a predetermined level, disclosed in conjunction with door-mounted rinse aid dispenser tanks for dishwashers, and includes an indicator knob having a stem portion acting as a closure for the tank filler opening accessible from the inside of the dishwasher door. A viewing chamber having a sight window is located in the end of the indicator knob with a feed reservoir arrangement causing liquid within the tank to flow by gravity into the viewing chamber when the door is closed, and a portion of the liquid being retained there upon opening of the dishwasher door, providing a visual indication that the level within the tank is at or above the predetermined level.

Abstract: A device for indicating the level of a poured floor comprised of an outer casing adapted to be driven into the ground, an indicator member receipt shaft which is insertable into the outer casing, and an indicator member having a scale imprinted thereon which is positionable within the indicator member receipt shaft at the height of the floor to be poured and determined by height indicator means.

Abstract: A liquid level indicator device for providing a visual indication of the level of liquid within a movably mounted tank, disclosed as a dishwasher door mounted rinse aid liquid dispenser tank, in which the dispenser tank is alternately positioned in either the vertical or horizontal position by the opening and closing of the door. The liquid level indicator includes a tank wall mounted indicator housing defining a viewing chamber into which is passed a small quantity of liquid when the tank is in the vertical or door closed position if the level is above a predetermined level and a portion of which liquid is retained within the viewing chamber as the tank moves to the door open position to enable viewing of the liquid through a sight window provided.

Abstract: A master cylinder reservoir molded of glass fiber filled nylon. An integrally molded window in a side wall is thinner than the reservoir walls and has a lower concentration of fibers so that it is sufficiently translucent to permit visual determination of the level of hydraulic brake fluid in the reservoir by observation through the window. The method of making the reservoir by molding, in which the flow of fibers into the window section is restricted to reduce the fiber concentration in the window and make it more translucent, is also disclosed.