Patent Application
20100288365
1. Field of the Invention
The field of the present invention relates to faucet handle assemblies in which a handle, knob, or other graspable element is attached to a stem, and said stem is operably coupled to a valve in the faucet, such that movement applied to the handle is transferred via the stem to the valve or an intermediate coupling, thereby actuating said valve. More particularly, the present invention describes a faucet handle assembly wherein two handles are attached to a stem that is operably coupled at its proximal end to a valve of a faucet, one of said two handles being located distal to the other of the said two handles on the stem. The two handles actuate the same valve via a common stem, but each of the handles has a distinct utility. One handle is designated for contact with unclean or unsanitized hands and objects, while the other handle is designated for contact with clean or sanitized hands and objects, thus enabling a more sanitary method of operating a faucet.
2. Background of the Related Art
Faucet handle assemblies in the prior art typically comprise a single handle or knob operably linked to a valve by a stem or shaft. Rotating the handle or knob turns the stem or shaft about its axis and thereby actuates the valve. For example, the invention disclosed in U.S. Pat. No. 7,540,300 to Thomas et al., issued Jun. 2, 2009, entitled “Faucet Handle Mounting” describes a single-handled faucet handle assembly and is incorporated by reference herein. Similarly, U.S. Pat. No. 7,624,757 to Schmitt issued Dec. 1, 2009, entitled “Dual Function Handles for a Faucet Assembly,” which is incorporated by reference herein, describes a single-handled faucet handle assembly that actuates a valve either directly by mechanical force or indirectly through an electric motor. The portion of the faucet control mechanism that comprises the handle, knob, or other means for manipulation together with its attached stem, shaft, or other axial member can be referred to as a “handle assembly.”
Water-dispensing faucets of the types commonly installed at sinks, washtubs, showers, and other fixtures generally incorporate two user-controlled valves, one for hot water and one for cold water, wherein each valve is coupled to a solitary handle on a faucet handle assembly. In the prior art, the handle is usually mounted on the distal end of the stem, while the proximal end of the stem engages the valve, such that torque is translated from the handle to the valve by rotation of the stem. In many instances, the stem of the handle assembly is indirectly coupled to the valve via an intermediate apparatus such as a motor, lever, gear, or other coupling means.
An alternative arrangement of prior art faucet assemblies commonly observed in showers and kitchen sinks comprises a single-handled faucet handle assembly coupled to a mixing valve, through which both the hot and the cold water flow. Operation of the handle modulates the internal settings of the mixing valve to determine the proportions of hot and cold water flowing through the faucet at any point in time. The handle assembly controlling the mixing valve typically comprises a handle that resembles a lever, which may move side-to-side or up-and-down, or it may comprise a knob that rotates on an axial stem. Two examples of lever-operated mixing valves are described in U.S. Pat. No. 4,730,640 to Moen, issued Mar. 15, 1988, entitled “Handle Construction for Mixing Valve,” which is incorporated by reference herein, and in U.S. Pat. No. 5,608,928 to Wang, issued Mar. 11, 1997, entitled “Faucet of a Sink,” which is incorporated by reference herein.
Faucets like those of the prior art described above which incorporate handle assemblies that comprise only one actual handle are an inconvenience and a health hazard, because a user must touch that handle in order to turn on the corresponding valve before his or her hands have been cleaned or sanitized in the faucet. Then, when turning off that valve after the user's hands have been cleaned or sanitized, the same dirty or unsanitary handle must be touched again. This creates an opportunity for germs, grime, or other filth to collect on the handle and to then to re-contaminate the user's hands after washing.
The present invention sets forth an improved, more sanitary, faucet handle assembly comprising two handles attached to a single stem or shaft. One handle is positioned at or near the distal end of the stem, while the other handle is positioned more proximally at an intermediate position on the stem, while the proximal end of the stem engages a valve, either directly or indirectly. Some examples of handle assemblies that indirectly engage valves are those which first connect to a motor, electronic actuator, or gearbox which then sends positional information to the valve assembly. Whether directly or indirectly engaged by the handle assembly of the present invention, the engaged valve may be a standard fluid valve, a mixing valve that interpolates two or more fluid inputs, or any other type of valve useful for controlling fluid flow through a faucet.
One of the two handles of the present invention, typically the distal handle, is maintained in a clean or sanitized condition while the other of the two handles, typically the proximal handle, is allowed to remain relatively dirty or unsanitized. A person using the faucet may first contact the proximal handle, manipulating it to open, or “turn on,” the associated valve. Then, after washing or sanitizing the hands or other objects or anatomy under the faucet, the person may close the valve, or “turn off” the valve, using the distal handle. The present invention may be utilized to control each of the valves in any faucet, i.e., such that both the hot and cold water valves are actuated by distinct dual-handled faucet handle assemblies, or, such that a single mixing valve is controlled by one dual-handled faucet handle assembly.
Throughout all the Figures, same or corresponding elements are indicated by the same reference numerals.
Both handles 20 and 21 in the preferred embodiment protrude laterally from the stem 10 at identical angles from the central axis 11 of the stem. However, each of the two handles 20 and 21 occupies a different longitudinal position on the stem 10. Throughout this specification, these may be referred to as the “upper” or “top” position and the “lower” or “bottom” position, or, they may be referred to as the first and second positions without regard to which is the upper or lower handle. Similarly, the two handles may be described as occupying “one position” and “the other position,” also without regard to which of them is above or below the other. The handles 20 and 21 in
When a user prepares to operate the faucet 50, the valve 30 is opened by rotating either of the two handles, 20 and 21, so that the stem 10 rotates on its central axis 11. Said rotation causes the valve 30 to open, permitting fluid to flow in through the intake line 31 and out through and output line 32 to the faucet 50. A second valve, not shown, may be opened by repeating this motion on another handle assembly coupled to the second valve.
After the desired volume of water or other fluid is flowing out of the faucet 50, the user may wash, rinse, or sanitize his or her hands or other items or anatomy under the stream. Subsequently, the user may close the valve 30 by rotating either of the two handles 20 or 21 so that the stem 10 rotates in the direction opposite that which previously opened the valve 30. If necessary, a second valve may be closed using the corresponding motion on a second handle assembly.
Having two handles instead of one, the handle assembly of the present invention permits a more sanitary method for opening and closing the valves of a faucet than previously permitted by the prior art. When one handle is designated as the “dirty” handle, a user with unsanitized hands may resort to this handle when turning on a valve in the faucet. After washing or sanitizing his or her hands or other objects in the faucet, the user may then turn off the valve using the other, or “clean,” handle. This way, filth that accumulates on the primary handle does not transfer back to the user's clean hands after washing.
Each of the two handles 20 and 21 may bear labels, lettering, or other indicia to indicate their respective purposes to the user. In
An alternative way to distinguish between the two handles is to fashion the upper and lower handles differently from each other, for example using different materials or having different shapes. The invention contemplates design modifications wherein the shape of each handle suggests its function to the user. For example,
In the preferred embodiment of
In the preferred method of use, the upper handle of the present invention is the “clean” or “off” handle while the lower handle is the “dirty” or “on” handle. This arrangement is preferable because grime, dirt, or liquid from the upper handle may drip, run, or fall downwards upon the lower handle. The lower handle is thus more conveniently designated as the less sanitary of the two. However, some embodiments may reverse this arrangement for various reasons. One reason why the bottom handle may be designated the “clean” or “on” handle is so that children, a wheelchair bound person, or other person who may not wish to ever come into contact with the “dirty” handle may have easier access to the “clean” handle at this lower position.
Throughout this specification, the word “handle” is used interchangeably with knob, lever, grip, or other synonyms of handle. In any case, the handle is a portion of the handle assembly that is intended to be grasped by the user when manipulating the assembly to actuate its corresponding valve. The word “stem” is synonymous with shaft, pin, rod, bar or other synonym of stem. The words “clean” and “sanitized” can mean sterile, or, merely clean but not sterile, or, merely washed but not clean, in addition to their customary synonyms. The words “dirty” or “unsanitized” can mean not yet sanitized, infected, soiled, wet, unwashed, unrinsed, or otherwise unclean in addition to their customary synonyms.
It should be emphasized that the above described embodiments of the present invention exemplify some, but not all, possible implementations of the present invention and have been set forth in order to provide a clear understanding of its qualities. Variations and modifications may be made to the above-described embodiments of the dual-handle assembly of the present invention without departing from the spirit and principles of the invention. All such modifications and variations are intended to be included herein.
This application claims priority from U.S. Provisional Patent Application No. 61/216,391, filed May 18, 2009, which is incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| 61216391 | May 2009 | US |
