Patent Application
20080086809
The invention may be more completely understood in consideration of the following detailed description of various embodiments of the invention in connection with the accompanying drawings, which are as follows.
While the invention is amenable to various modifications and alternative forms, specifics thereof are shown by way of example in the drawings and described in detail herein. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Thus, it will be understood that the hydrotherapy equipment jets described and illustrated herein are exemplary and, as defined herein, comprise jets, nozzles, shower heads, waterfalls, waterspouts, water features, and the like, each of which is within the scope of the present invention.
The surface of the overmolding 30 of the jet 10 of
The overmolding 30, 60 of the spa component of the present invention preferably is injection molded over the substrate housing 20, 50 by methods that are well known to those skilled in the art, including but not limited to, dual-shot or multi-shot processes or insert molding techniques. The overmolding of the spa jet of the present invention may comprise an elastomeric resin. For example, the overmolding may comprise, without limitation, thermoplastic elastomer (TPE) and thermoplastic vulcanizates (TPV) as well as other thermoplastics and silicones, including combinations of thermoplastics and of thermoplastics and silicones. The material selected for the overmolding may be resilient, waterproof and have an ability to adhere to the substrate that is generally comprised of a plastic material, including but not limited to acrylonitrile butadiene styrene (ABS), acrylonitrile ethylene styrene (AES), polycarbonate (PC), thermoset plastics, ceramics, metals, glass, and the like. Those skilled in the art will recognize a range of equivalent materials, each of which is within the scope of the present invention.
The gripping ergonomic enhancement provided by the present invention results from, in part, differences in the materials used for the component housing and the overmold. For example, all materials have a coefficient of friction. The coefficient of friction is simply a measure of the slipperiness between two surfaces. The larger the coefficient of friction, the less slippery the surfaces. In addition, the resistance to lateral motion when one attempts to slide the surface of one object over another surface, that is, a hand over a spa component, is friction. The frictional force depends on the normal force, which is the force pressing the two surfaces together as well as the types of materials from which the surfaces are formed, that is, some materials are more slippery than others. Thus, the present invention provides, among other things, a user with the ability to manipulate a spa controller with less frictional force than known controllers.
Thus, for example, with reference to
In addition, various embodiments of the present invention may comprise materials in the housing and the overmolding that differ relative to each other in terms of hardness or softness. In a preferred embodiment, the overmolding material is softer than the material of the housing to enhance the gripping ergonomics of the controller.
Moreover, various embodiments of the invention may comprise at least a portion of the overmolding being raised and/or beveled relative to the component housing to enhance the gripping ergonomics thereof. The invention may further comprise overmolding with textures or patterns to enhance the user's ability to grip and manipulate the controller.
The foregoing detailed description of the preferred embodiments and the appended figures have been presented only for illustrative and descriptive purposes and are not intended to be exhaustive or to limit the scope and spirit of the invention. The embodiments were selected and described to best explain the principles of the invention and its practical applications. One of ordinary skill in the art will recognize that many variations can be made to the invention disclosed in this specification without departing from the scope and spirit of the invention.
