The present invention relates to indoor plumbing, and more particularly, to gravity-operated flush toilets, and to the fill valves and flush valves that are used with such toilets. It also relates specifically to a fluid flow control device having, in combination, a fluid flow adjuster and a key that can be used for setting the refill ratio for water flowing from a fill valve to the overflow tube of a flush valve.
A conventional gravity-operated flush toilet has several basic components. The porcelain or china components include a bowl and a water tank mounted on top of a rear portion of the bowl. The bowl and tank are usually separate pieces bolted together to form a so-called two-piece toilet. Modern gravity-operated flush toilets are frequently made as a so-called one-piece toilet in which the bowl and tank are made as one continuous integral piece of china.
The plumbing components of a gravity-operated flush toilet include a fill valve in the tank which is connected to a water supply line, a flush valve surrounding a drain hole in the bottom of the tank that communicates with the bowl, and a flapper valve that normally closes and seals the flush valve. The plumbing components further include a control such as a pushbutton or lever mounted on a wall of the tank that moves a lever whose remote end is connected to the flapper valve for lifting the same.
In the experience of these inventors, a water flow adjuster may be interposed between a toilet fill valve and the overflow tube of a flush valve. The water flow adjuster may comprise a flow device with means for controlling flow that ranges from fully open to fully closed (i.e., where flow is stopped). In the art of toilet fill valves, however, the use of such a device is desirable and particularly where the flow can be carefully controlled. Accordingly, there is a need to provide a flow control device combined with a means for carefully and more precisely controlling the flow ratio. There is also a need to provide such a flow adjuster and control means that allows a toilet installer to mechanically adjust the percentage of toilet bowl fill using a numbering system where the key numbers correspond to specific toilets and/or to specific refill amounts.
In accordance with the present invention, there is provided a fluid flow control adjuster device that is combined with a means for carefully and more precisely controlling the flow ratio through the adjuster device. This flow control device has particular application when placed in-line with a tube that runs from a toilet fill valve to the overflow tube of a flush valve. The device of the present invention comprises an adjuster portion, or “adjuster,” having an adjuster body with an inlet and an outlet. The body includes an adjuster knob and a receiver gap, which is a gap between a body rotation stop and another edge at a top surface of the adjuster knob. A key portion, or “key,” is also provided, which key can be inserted between the body rotation stop and the edge of the adjuster so that the installer can dial in the correct percentage of fill to eliminate weir line spill over. The key is a hub-like planar structure that matches the curvature of the receiver and includes a plurality of key fingers with each finger including indicia that correlate to settings for selecting a proper toilet bowl refill range.
The foregoing and other features of the adjuster device and key combination of the present invention will be apparent from the detailed description that follows.
Referring now to the drawings in detail, wherein like-numbered elements refer to like elements throughout,
As shown in
As shown in
The key 40 is a substantially flat planar structure that comprises a central hub-like portion 42 and an outer perimeter 44. The outer perimeter 44 of the key 40 comprises a plurality of fingers 46, each finger 46 having a different width as compared to the others. Each finger 46 further comprises indicia 49. In the embodiment illustrated in
Although the foregoing has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the construction and the arrangement of components, some of which have been alluded to, may be resorted to without departing from the spirit and scope of the invention as it is described.
This Application claims the benefit of U.S. Provisional Application No. 61/590,108, filed Jan. 24, 2012.
Number | Date | Country | |
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61590108 | Jan 2012 | US |