Patent Application
20140332355
A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.
The invention relates to the field of electrical switch enclosures. In particular it relates to a permanent childproof cover, placed over an electrical switch and forming a complete enclosure, which denies access to the switch by children and prevents its operation by them, while allowing continued use by adults. The cover is held firmly in place by the existing switch plate fasteners. Access by toddlers and young children to the toggles or rockers elements which operate the switch inside the enclosure is completely denied while adults gain access through a portion of the enclosure that contains a childproof removable cap or caps. When the childproof cap is removed by an adult, the cover remains childproof through additional childproof features including an opening thru which a child's hand will not pass and with the opening also placed at a height above the toggle or rocker elements that allows adult fingers to manipulate the toggle or rocker elements but does not allow the shorter fingers of a child to reach these elements.
There are a number of situations that arise when it is necessary to deny access to and prevent the operation of electrical wall switches by toddlers and young children: toddlers and young children henceforth referred to as children. Examples of such situations include the need of parents to regain control over light switches in a child's room where the child insists on turning the lights back on to stay awake after the parents have put the child to bed for the night. Other situations include the need to assure the safety of the child in the home by preventing operation of a wall switch by them where, if allowed to occur, mechanical devices would be activated such as a garbage disposal unit or a bladed fan into which the child might place their hand and the need to avoid impairment of home safety that would be compromised, if at night and unknown to the occupants, the child had previously actuated a switch that had shut off outside protective lighting or the home alarm system.
Children learn how to operate electric wall switches by visually observing the action of parents and/or adults when the older people operate these devices. To prevent children from learning in such a manner, it is necessary that the visual attraction of the children to such devices be eliminated and that operation of such devices, when they occur by adults, be hidden from the child's view. The present invention is a childproof enclosure that is mounted over the wall switch that hides the existence of and operation of the switch from the child while also preventing the child from operating the toggle or rocker switch elements of the electrical switch. A childproof device is defined herein and in The Dictionary.com as a device designed to prevent the opening of, the tampering with, or the operation of any device by a child. The present invention is the first approach designed to accomplish those objectives and to be truly childproof.
It is therefore an objective of the present invention to house the wall switch in a strong, completely enclosing, non-penetrable to children, switch enclosure formed between the existing wall switch plate and the added cover.
It is a further objective of the present invention that the non-penetrable enclosure be mounted in a physically strong manner so that the enclosing cover may not be torn off by the actions of children.
It is a further objective of the present invention that the enclosure be constructed from opaque materials to visually hide the existence of the wall switch from the child and to completely remove any attraction of the child to it .
It is a further objective of the present invention that the enclosure be constructed from opaque materials so that when it is operated by adults, the enclosure completely prevents the child from observing how the wall switch is operated inside the enclosure by an adult so the child can not learn to do it themselves.
It is a further objective of the present invention that a portion of the enclosure be constructed with a removable childproof cap or caps so that adults may operate the enclosed toggles or rocker switches but children can not.
It is a further objective of the present invention to maintain the childproof feature of the enclosure such that upon removable of the childproof cap by an adult, the exposed opening be smaller than a child hand to exclude a child's hand from the interior of the envelope thus preventing operation of the wall switch by the child.
It is a further objective of the present invention to maintain the childproof function of the enclosure such that upon removable of the childproof cap by an adult that the opening of the enclosure be positioned at a height above the toggle or rocker switches so that only adult fingers entered into the enclosure may operate the switches and that a child's fingers can not.
The features and advantages described herein are not all inclusive and, in particular, many additional features will be apparent to one of ordinary skill in the art in view of the drawings, specifications and claims. Moreover, it should be noted that the language used in the specifications has been principally selected for readability and instructional purposes, and not to limit the scope of the inventive subject matter.
A search of prior art reveals no prior art which provides a completely protective childproof wall switch enclosure as implemented by the present invention.
The present invention is defined by the claims, and nothing in this section should be read as a limitation on those claims. Rather by way of general introduction and briefly stated, various preferred embodiments are described that relate to a childproof electric switch cover that allows switch control elements to be operated by adults while preventing children from gaining access to and operating the toggle or rocker elements of the electrical switch protected by the cover.
Protection of an electrical switch from operation by the action of children in the prior art falls generally into two approaches: protection of switch operation by a switch guard or protection of switch operation by the addition of an enclosure. However, no completely childproof enclosure presently exists. The preferred embodiment of the present invention is a cover that is placed over a wall switch which forms a complete childproof enclosure with a portion of the enclosure being a childproof cap or caps that when removed by an adult allows the adult to operate the toggles or rocker switch elements but does not allow children to operate them. When the childproof cap is removed by an adult in the present invention, the opening that is revealed is itself childproof. In the preferred embodiment, this is accomplished by restricting the size of the opening so a child's hand can not pass through it and by making the distance from the opening to the toggle or rocker switch plate elements sufficiently long that adult fingers are required to operate them but the distance is in excess of the length of a child's finger so children can not operate them.
In the prior art, a switch guard is seen to be a mechanical arrangement that interferes with a direct frontal approach to the electrical switch by a child's hand or finger while an enclosure attempts to prevent operation of a switch in any manner by a child. All prior art switch guards leave open areas, gaps or passages on the sides, tops and/or bottoms of the switch thru which the switch may still be actuated by prying children fingers or, for example, by elongated instruments held in the child's hand. Thus, there are no switch guards that meet the childproof definition. Prior art switch enclosures that have been divulged, such as U. S. Patent Application U.S. 2011/0198200 titled “Childproof Light Switch Guard” do not provide an impenetrable enclosure and thus are not childproof. In particular, the so called childproof U.S. 2011/0198200 can be defeated, for instance, by a child holding a pencil, pen or crayon in its hand and inserting the instrument through the openings in such guard and against the toggle or rocker element, thus operating the switch.
The preferred embodiment of the present invention is a childproof switch enclosure in the form of a mechanical envelope which completely encloses a switch with the non-penetrable enclosure designed to prevent any and all tampering with or the opening of the enclosure by children in efforts to gain access to the toggles or rocker elements of the switch while still maintaining operation by an adult. The preferred embodiment of the present invention also is fastened to the switch box and thus to the wall in a manner that assures that the childproof cover may not be yanked from the wall by the actions of children. No prior art wall switch guard or wall switch enclosure has been found which is considered childproof as is the present invention.
In the preferred embodiment of the present invention, childproof access to the interior of the enclosure and to the toggles and rocker switch elements that operate the wall switch is denied by the addition of the childproof electric switch cover over the wall switch. To allow adults to operate the wall switch, a portion of the cover is equipped with a removable childproof cap or caps. The childproof cap can not be opened by a child but can only be opened by an adult who can then change the wall switch setting: on or off. Even with the childproof cap opened and removed by an adult, the childproof design of the present invention is preserved in the preferred embodiment by additional features. These additional features include restricting the physical dimensions of the opened passage to dimensions smaller than a child's hand while also making the distance from the opening to the toggles and rocker elements longer than a child's finger so that a child may not reach them or operate them.
A majority of childproof caps in the prior art, used to protect the contents of prescription pill vials and dangerous chemicals in containers from child access, are designed to be opened in either of two ways: either requiring the cap to be pressed axially down against the bottom portion of the vial or container while simultaneously applying a twist to the cap or by equipping the vial or container with a flexible cap that when squeezed laterally elongates into an elliptical shape thus releasing the cap from restrictive cogs on the bottom portion of the vial or container and allowing the cap to be twisted off the vial or container. These two techniques have been employed with minor variations from the beginning of childproof cap designs. The combined downward pressure and turn approach to open a childproof cap, labeled a Type 1 childproof cap in this application, was divulged in an early patent and perhaps even earlier. The early example being referred to is U.S. Pat. No. 3,853,236 issued Dec. 10, 1974 to Efrem M. Ostrowsky and titled “Safety Closure Unit”. An early example of the combined lateral pressure and turn approach to open a childproof cap, labeled a Type 2 childproof cap in this application, was divulged in U.S. Pat. No. 3,958,708 issued May 26, 1976 to Michael A. Le Bron, Jr. and titled “Oversize Safety Cap”. In that patent, lateral pressure against the outside flexible cap causes the round cap to become elongated in shape and engage inner and outer elements of the cap which in turn engages threads allowing the cap assembly to be removed.
Subsequent patents issued for Type 1 and Type 2 removable caps have varied the geometrical designs of the inner and outer cap elements or eliminated the inner cap element by clever design. However the two types of removable caps are still removable in the same manner: either with downward pressure and simultaneous twist or lateral pressure deforming the cap and simultaneous twist. The present invention uses for its childproof cap one of those divulged in an earlier patent whose patent protection no longer exists.
In prior art, a number of different approaches have been divulged for preventing children from operating electric wall switches but none of the previous designs have been truly childproof. Two examples of prior art are now considered to establish that the prior art was not childproof.
In the first example of prior art, a switch guard, of semi-circular shape and strap form, placed above and around the toggle of an electrical switch is presented in
A second example of prior art for a wall switch guard is illustrated in
Application U.S. 2011/0198200 claims to provide a method for restricting small children from accessing a standard household wall switch. It employs an open, transparent, restricted size, tube of rectangular cross section which allows, as shown in
U.S. Patent Application U.S. 2011/0198200 displays additional deficiencies in comparison with the present invention in that it is fabricated from transparent plastic material: use of transparent material in its construction allowing the toggle or rocker switch elements of the existing electrical switch to remain visually attractive to the child with the transparent plastic materials forming the body of the switch guard also allowing the child to visually observe operation of the switch elements by adults and thus learn to operate the toggle or switch elements themselves. The prior art “Childproof Light Switch Guard” is also deficient in mounting strength compared to the present invention for it is held in place using adhesive pads between its backside and the existing switch plate; the adhesive pads providing insufficient strength to defeat a child intent on tearing the device from the underlying switch plate. The present invention provides superior strength since it is attached directly to the underlying switch box with metal fasteners: the switch box in turn attached directly to the timbers forming the wall.
Plan view and side view drawings of the present invention provided in
Childproof caps that exist in prior art fall into two major categories: Type 1 childproof caps that are removed by the simultaneous application of axial pressure and twisting as illustrated in
Side view and end view drawings of a Type 1 childproof cap are presented in
Side view and end view drawings of a Type 2 childproof cap are presented in
In
Although the present invention has been described with reference to preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. As such, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting and that it is the appended claims, including all equivalents thereof, which are intended to define the scope of the invention.
