The present invention relates to child safety protection. More specifically, it relates to a tether that prevents a television, appliance, or other appliance from toppling.
Injuries due to instability of furniture are a significant problem, particularly for children. When a heavy electronic device, such as a large flat-screen television, sits atop a piece of furniture, the combination has an elevated center of gravity, significantly exacerbating the danger. Jostling of the furniture may cause the television, and possibly the furniture as well, to topple.
Certain terminology that is used in the specification and claims of this document are clarified here at the outset. For our purposes, the word “incident” means a safety incident potentially involving toppling of the piece of furniture or the electronic device that rests upon it. When we say something can be done “manually without tools”, this is stronger than mere feasibility. It implies that it can be done conveniently, without unreasonable effort, by an ordinary adult. We use the term “appliance” in the general sense of a “device designed to perform a specific task.” The terms “loop” and “ring” will be used interchangeably to describe a structure that encloses an opening; the structure and/or the opening may/may not have curvature. A “set” includes zero or more elements. A “nonempty” set contains at least one element. A “subset” of a set may be a proper subset, which has fewer elements than the set, or an improper subset, which is identical to the set. The word “or” is used inclusively, unless otherwise clear from the context; if A or B is true, then A is true, B is true, or A and B are true.
A safety device is more likely to be used if it is convenient, as well as serving the purpose for which it is intended. The anti-toppling tether invention described herein targets both these goals. In general, embodiments of the tether can be used to restrain any kind of bulky appliance, such as a large electronic device. Without loss of generality, however, we will for convenience use a flat panel appliance (e.g., a computer appliance) or television (TV) in much of the further discussion. We assume that the TV is situated on a piece of furniture, such as a dresser or chest that is close to, or against a wall. The discussion that follows pertains also if the furniture is close to vertical surface other than a wall, such as a partition. We assume that the wall or vertical surface is sufficiently rigid and stable that it will not topple during an incident.
If the furniture is rocked or itself gets toppled, ideally the TV would simply stay put. However, the type of restraint that would achieve this safety ideal would (1) be expensive; (2) require experience with hand tools and the ability to follow written instructions for installation; (3) probably require drilling into a wall, which is a particular problem for renters, or into furniture; (4) significantly diminish certain functionalities of the TV, such as swivel and tilt; and (5) effectively lock the TV into a single location in the home because the restraint will have to be at least partially uninstalled (and later reinstalled) to temporarily relocate the TV (e.g., to enjoy a sports event with guests in a different room). Each of these negative factors alone will discourage a significant percentage of consumers; only the most conscientious parents are likely to purchase, successfully install, and diligently use a device that inflicts all five factors in combination.
Consider an incident where a child rocks a tall, marginally stable, dresser upon which a large, heavy, flat-screen TV rests. Note that in such a case, rigidly and permanently anchoring the TV to the top of the dresser is a bad idea—this configuration will almost guarantee that both the furniture and TV will topple. Of course, if the furniture piece is heavy and well-made, then such anchoring might work, but who wants to drill into their quality furniture? If the TV is unrestrained, then the TV might topple even if the furniture does not fall. In both of these worst-case scenarios, the TV moves away from the wall, beyond the initial outward surface location of the furniture before it was disturbed.
If the TV can be constrained in the above incident so that it tends to fall inward and downward, rather than outward, then most tragedies of this type can be avoided. By limiting the safety goal pragmatically, some or all of the five negative factors above can be eliminated. Also, even a tether that does not fully support the weight of the equipment or appliance to which it is attached may offer sufficient restraint to protect that object from any damage whatsoever in a substantial number of incidents.
A tether of the invention is a set of straps, or belts, and other components that form a single connected assembly when the tether is in operation, restraining the appliance. The components may include, for example, one or more surface-mounts, length-adjusters, elastic components, loops, quick-releases, and various connectors. The surface-mounts include at least one mount for attaching the tether to a wall and one mount for attaching the tether to the appliance (e.g., TV, appliance, other electric device). The mounts may fasten with hardware (e.g., screws, bolts, staples), but preferably they include an adhesive surface for easy attachment. While the adhesive surface may not alone support the weight of the device, it should be enough to keep the appliance from toppling even if the mount becomes detached from the wall or appliance in an incident. The adhesive surface may be protected with a cover that can easily be peeled off. Such mounts can be easily and intuitively installed without hand tools or mechanical experience. They can also be relatively easily be removed from the appliance and from the wall.
A variety of configurations for the straps are described in the Detailed Description section. The TV may have between 1 and 4 attachment points, where a surface-mount attaches the tether to an appliance surface external to the tether; likewise for a wall surface. One exemplary embodiment has two attachment points on the TV, and one on the wall. Another has one attachment point on the TV, and two on the wall.
A length-adjuster allows the length of a strap segment in the tether to be adjusted so that the tether fits in the space between the TV and the wall and is reasonably taut. Length adjustment may be done in a variety of ways, including for example, a slide, a buckle, or a hook-and-loop fastener such as VELCRO®.
An elastic component, such as a strip of elastic material or a spring, may be used to compensate for distance changes resulting from swivel and tilt of the TV. The elastic component should have a stiffness that allows elongation and shortening so as to maintain reasonable tautness within normal operating uses, particularly rotations. The elastic component should be strong enough to not break easily in an incident, thereby diminishing the overall safety effectiveness of the tether. An elastic component can also help prevent damage to the appliance it secures under some circumstances. In an earthquake, for example, an appliance that is rigidly secured by a tether to a wall is much more likely to suffer damage than one that has some freedom of movement independent of structural elements; similarly, if furniture on which the appliance rests is jostled, but does not fall.
A loop may be included at some location in the tether. A strap may slide freely through the opening in the loop to facilitate the TV being swiveled or tilted.
One or more quick-releases in the tether may allow the TV to be conveniently removed manually without tools from being held to the wall by the tether. A quick-release might be, for example, a clasp, a “snap hook”, a hook, a buckle, a snap, a button, or a hook-and-loop fastener. In embodiments having this feature, decoupling quick-releases from respective elements to which they attach will separate the tether into two or more subassemblies, without requiring removal of the surface-mounts on the wall or the TV. The quick-releases also allow easy recoupling to again restrain the appliance. In some embodiments, releasing a single quick-release decouples all the wall mounts from all the appliance mounts.
Processes utilize embodiments that incorporate various combinations of these features.
a is a top view of an anti-toppling tether securing an appliance, in this case a TV or monitor, to a wall, wherein two surface-mounts are visible on the appliance and one surface mount is visible on the wall. A swivel axis is also illustrated.
b is a top view of an anti-toppling tether securing an appliance to a wall, wherein one surface-mount is visible on the wall and one surface mount is visible on the appliance.
c is a top view of an anti-toppling tether securing an appliance to a wall, wherein two surface-mounts are visible on the wall and one surface mount is visible on the appliance.
d is a top view of an anti-toppling tether securing an appliance to a wall, wherein three surface-mounts are visible on the appliance and one surface mount is visible on the wall.
e is a top view of an anti-toppling tether that incorporates elastic components and secures an appliance to a wall.
f is a top view of an anti-toppling tether that incorporates an elastic component near a wall mount, and secures an appliance to a wall.
g is a top view of an anti-toppling tether that incorporates an elastic component near an appliance mount, and secures an appliance to a wall.
a is a side view of an anti-toppling tether securing an appliance to a wall, illustrating a tilt axis of the appliance.
b is a side view of an anti-toppling tether securing an appliance to a wall, wherein one surface-mount is visible on the wall and one surface mount is visible on the appliance.
c is a side view of an anti-toppling tether securing an appliance to a wall, wherein two surface-mounts are visible on the screen portion of the appliance and one surface mount is visible on the wall.
d is a side view of an anti-toppling tether securing an appliance to a wall, wherein two surface-mounts are visible on the appliance—one on the screen portion and the other on the stand—and one surface mount is visible on the wall.
e is a side view of an anti-toppling tether securing an appliance to a wall and incorporating an elastic component attached to a wall mount.
f is a side view of an anti-toppling tether securing an appliance to a wall and incorporating an elastic component attached to an appliance mount.
a is a back view of an appliance to which a surface-mount attaches at one point.
b is a back view of an appliance to which surface-mounts attach at two points.
c is a back view of an appliance to which surface-mounts attach at three points.
d is a back view of an appliance to which surface-mounts attach at four points.
a is a side view of a surface-mount with a rectangular loop through which a tether strap (in cross section) passes.
b is a side view of a surface-mount with a D-shaped loop.
a is a clasp that might be used to connect a tether strap to a tether mount.
b is a clasp that might be used to connect a tether strap to a tether mount. This clasp includes a rectangular loop, through which the strap may freely slide.
a illustrates an ordering of components that might be used in a portion of an anti-toppling tether.
b illustrates an ordering of components that might be used in a portion of an anti-toppling tether.
c illustrates an ordering of components that might be used in a portion of an anti-toppling tether.
d illustrates an ordering of components that might be used in a portion of an anti-toppling tether.
e illustrates an ordering of components that might be used in a portion of an anti-toppling tether.
This description provides embodiments of the invention intended as exemplary applications. The reader of ordinary skill in the art will realize that the invention has broader scope than the particular examples described here. For example, we will use flat-screen appliances (e.g., television appliances or computer appliances) throughout for illustration. However, the scope of the invention encompasses other appliances or pieces of equipment.
a-1g illustrate top views of various embodiments of an anti-toppling tether 100 and
In each of these figures, we assume that the monitor 127 rests on top of a piece of furniture 160, or a shelf or other horizontal surface. Because elements of
A strap 101 will preferably be made from a fabric, such as a synthetic material (e.g., webbing or strip made from nylon, polyester, or polypropylene), or a natural fabric (e.g., cotton), or some combination or blend thereof. A strap 101 might also be made of leather or rubber. A tether 100 might include two or more straps 101, and these may include a single or a plurality of materials.
When the tether 100 is in operation restraining the monitor 127, the strap 101 and the two surface-mounts 110 are directly or indirectly physically connected to each other by the tether 100. More generally, the components of the tether 100, including for example, various hardware elements such as those shown in
A typical flat-screen monitor 127 has internal hardware structures that allow it to rotate both horizontally (“swivel”) and vertically (“tilt”). These structures, and the corresponding rotation axes, are usually found in a stand 122 or base of the monitor 127. The particular monitors 127 in
Note that from the top view perspective of
a shows two appliance mounts 111 attached to the screen portion 121 of the monitor 127. A strap 101 extends from one appliance mount 111 (e.g., the one to the left) to the wall mount 112. Although that strap 101 might end at the wall mount 112 with some attachment, alternatively it might, as shown, pass through a loop 170 (see, e.g.,
The approach allows the monitor 127 to swivel while the tether 100 is in place, although any swiveling relative to a “standard” orientation of the monitor 127 in which the screen 121 is parallel to the wall 150 (or more precisely, in which the respective distances from the first and second appliance mounts 111 to a loop 170 attached either directly to a wall mount 112, or attached to an elastic component 130 that is attached to the wall mount 112, are equal) will result in a reduction in tautness of the strap 101. This is illustrated by
It can be proved mathematically that L′<L. In fact, for any values of w and d, L′ decreases smoothly to a minimum value when θ is 90 deg.
Such loss of tautness implies that the tether 100 may have no restraining effect in the first few seconds of an incident when the monitor 127 has been swiveled away from the position where it is parallel to the wall 150. Other than the tautness loss problem, the geometry of
The tether 100 of
The tether 100 of
The tether 100 of
The tether 100 of
As with the tether 100 top views already discussed, due to the perspective in the side views of
a is a side view of a monitor 127 resting on furniture 160, which in turn is supported by the floor 250. The monitor 127 has a screen portion 121, which is attached to a stand 122. The stand 122 has a column 225 and a base 226 (as shown in
In
e, 1f, 2e, and 2f show tethers 100 that incorporate elastic components 130 to facilitate better swivel and tilt, while maintaining tether 100 strap tautness. An elastic component 130 might be, for example, any elastic material such as elastic fabric or a rubber strip, a spring 1100, or a bungee/shock cord. The elastic component 130 may be connected within a tether 100 to a strap 101 or a mount 110, possibly with other hardware components. Some possible configurations are described in connection with
The layouts of
Another configuration that addresses the swivel and tilt issues is the combination of views from
a-14 show exemplary components that might be included in an anti-toppling tether 100. In
The loop 170 in
The tether 100 may be equipped with one or more quick release 600 structures. A quick release 600 can be used to decouple the appliance 120 from the wall 150, without removal of at least one surface-mount 110 or appliance mount 111. For example, a person might want to move the appliance 120 for cleaning, or to temporarily move it for use in another location. Such embodiments of the tether 100, therefore, have a “restraining” or “operable” configuration, for restraining the appliance, and a “split” configuration (or possibly a plurality of split configurations) in which the appliance can be conveniently moved.
A quick release 600 might be integrated into some other component, as in the hook 601 integrated into a spring 1100, shown in
The snap hook 605 of
A quick release 600 that splits the tether 100 into two disconnected subassemblies at a single point is particularly convenient. For example, any of the quick release 600 components of
In certain elastic components 130, such as the elastic material 1000 shown in
a-15e show various exemplary orderings of components that might be coupled together in a tether 100. A component 1500 of three dots indicates the remainder of the tether 100. Note that the figure shows orderings, not necessarily sequences—here might be an intermediate hidden component used to couple the two shown components, conceptually along the vertical line separating those two components. In
To exemplify application of
Of course, many variations of the above method are possible within the scope of the invention. The present invention is, therefore, not limited to all the above details, as modifications and variations may be made without departing from the intent or scope of the invention. Consequently, the invention should be limited only by the following claims and equivalent constructions.