The present invention generally relates to locking devices and, more particularly, relates to a locking device for a container, e.g. a waste container.
Household refuse such as trash, recycling items, and/or yard waste can typically be deposited in a container. Such containers can include a lid for concealing the household refuse collected therein, as well as to prevent wild animals or people from accessing the household refuse and also protecting the trash from the elements. Typically, the lid is removably coupled to the container in a friction-fit manner to allow the lid to be easily removed from the container. However, when the lid is not secured, the contents can be undesirably expelled from the container, such as if the container is toppled over such as by wind or animals.
Various lid locking devices have been implemented for refuse containers. For example, a strap can be coupled to the lid and the container in a snap lock fashion. However, this locking method requires a plurality of steps to secure the strap, and the strap can easily become separated from the container. Another exemplary locking device includes a metal coil coupled between the lid and the container to provide greater tension. However, the coil can deteriorate due to exposure to the elements.
Therefore a need exists for a locking device that improves upon prior locking devices and solves the problems inherent in known locking devices.
The present invention provides a locking device, e.g. for a container, that keeps the lid of the container closed when the container is knocked over on its side, with a sudden jerking or jarring motion, such as by impact with the ground, to prevent spillage of its contents. The locking device, however, allows the lid to open when the waste container is tipped over, preferably in a forward direction, by a dumping operation.
According to an aspect of the present invention, the locking device, which may be mounted on the container, contains a weighted mechanism having a mounting block and at least one paddle pivotally mounted on the mounting block. The weighted mechanism is movable between a locked position and an unlocked position. The at least one paddle has two opposing ends. A first end is mounted to the mounting block by a rotatable coupling to allow the paddle to pivot thereon. A second end of the paddle is detachably mounted to a surface of the mounting block, such that a sudden jerking or jarring motion, such as by impact with the ground, causes the second end to detach from the mounting block to block the weighted mechanism from moving from the locked position to the opened position. On the other hand, if the container is tipped over without impact, e.g. by being relatively slowly or easily intentionally laid over by a user, the second end of the paddle remains attached to the mounting surface, which allows the locking block to be moved to an opened position. Essentially, the paddle provides a mechanical sensor that can detect whether the container has been unintendedly tipped over or whether it is being intentionally laid over, such as for dumping.
According to another aspect of the invention, there is provided a locking device for a container. The locking device comprises a knob coupled to a top surface of a lid of the container and a slide trigger configured to slidably engage with a latch coupled to the container. The locking device can further include a weighted mechanism disposed below a bottom surface of the lid of the container. The weighted mechanism can include a mounting block, a slide weight, a plurality of impact detection paddles which serve as a mechanical sensor to detect whether the container has been unintendedly tipped over.
Other aspects of the invention, including apparatus, devices, systems, converters, processes, and the like which constitute part of the invention, will become more apparent upon reading the following detailed description of the exemplary embodiments.
The accompanying drawings are incorporated in and constitute a part of the specification. The drawings, together with the general description given above and the detailed description of the exemplary embodiments and methods given below, serve to explain the principles of the invention. The objects and advantages of the invention will become apparent from a study of the following specification when viewed in light of the accompanying drawings, in which like elements are given the same or analogous reference numerals and wherein:
Reference will now be made in detail to exemplary embodiments and methods of the invention as illustrated in the accompanying drawings, in which like reference characters designate like or corresponding parts throughout the drawings. It should be noted, however, that the invention in its broader aspects is not limited to the specific details, representative devices and methods, and illustrative examples shown and described in connection with the exemplary embodiments and methods.
This description of exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “horizontal,” “vertical,” “up,” “down,” “upper”, “lower”, “right”, “left”, “top” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing figure under discussion. These relative terms are for convenience of description and normally are not intended to require a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected,” refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. The term “operatively connected” is such an attachment, coupling or connection that allows the pertinent structures to operate as intended by virtue of that relationship. Additionally, the word “a” and “an” as used in the claims means “at least one” and the word “two” as used in the claims means “at least two”.
As best shown in
Container 10 includes a lid 12 and a containment body 14. The containment body 14 defines an interior volume for holding, e.g., waste. The lid 12 may be separate from the containment body 14 or may be pivotally mounted to the containment body though coupling 16, such as a hinge. The containment body 14 may include a plurality of side walls 18. The lid 12 and the containment body 14 of container 10 may be made of the same or different materials. In an exemplary embodiment, wheels (not shown) may be coupled to the containment body to aid in transport of the container.
A locking device 20 is coupled to the lid 12 of the container 10. In an exemplary embodiment, as best illustrated in
The locking device 20 interacts with a latch 46 coupled to the containment body 14 to secure the lid 12 to the containment body 14. As best illustrated in
As best illustrated in
When a plurality of containment bodies 14 are nested together (e.g., one inside of another), each latch 46 is mounted so as to not to interfere with an adjacent nested containment body 14. Latch 46 may be coupled to the containment body 14 during the manufacturing process of the containment body 14, after an end user receives the containment body 14, or any time in-between. Alternatively, latch 46 may be integrally formed with a sidewall 18 of the containment body 14.
As best illustrated in
The slide trigger 64 is configured to slidably engage with latch 46. In an exemplary embodiment, as best illustrated in
The first projection 80 of the slide trigger 64 is configured to engage with an opening 90 (see
The second projection 82 of the slide trigger 64 is configured to engage with the biasing device 88. In an exemplary embodiment, as best illustrated in
The third projection 84 of the slide trigger 64 is configured to engage with the weighted mechanism 66. In an exemplary embodiment, as best shown in
The weighted mechanism 66 is configured to provide counter balance to the locking mechanism. The weighted mechanism 66 includes a mounting block 106, a slide weight 108 extending from the bottom of the mounting block 106, and one or more impact detection paddles 110 retained on the mounting block 106, as best shown in
As best illustrated in
In certain embodiments, the bias force to keep the paddle from rotating away and detach from the mounting block 106 may be magnetic. In an exemplary embodiment, a magnet may be place at an upper portion of the paddle 110 opposing the rotatable coupling to magnetically hold the paddle 110 and prevent paddle 110 from rotating away from the mounting block 106. When a force greater than the magnetic force is introduced, the upper portion of the paddle 110 pulls away from the mounting block 106 by pivoting on the rotatable coupling 120. Preferably, the magnetic force is not sufficient to prevent the paddle 110 from rotating away from the mounting block 106 when the locking device 20 is on its side, e.g. when the container 10 is knocked over on its side. A magnet may be permanently placed on the upper end of each paddle 110 and a ferromagnetic material may be used as part of the mounting block 106. Alternatively, the magnet may be placed on the mounting block 106 and a ferromagnetic material placed on the upper end of the paddle 110.
The weighted mechanism 66 can be actuated using gravity. For example, when the lid 12 is in a closed position and the container 10 is upright, the slide weight 108 extends downwardly from the mounting block 106 as illustrated in
The housing 44 may be configured to enclose the locking mechanism 20. In an exemplary embodiment, as best illustrated in
In operation, when the locking mechanism 20 is in the locked position, lid 12 of the container 10 is in contact with and encloses the containment body 14. As best illustrated in
In an exemplary embodiment, when the container 10 is knocked over on its side, e.g. by strong wind or animals, while in the locked position, the jerking or jarring action, such as ground impact, on the container 10, actuates one or more of the impact detection paddles 110 to extend from the outer surface 116 of the mounting block 106 (the paddle 110 pivots away from the mounting block 106), as illustrated in
On the other hand, when the waste container 10 is laid on its side, e.g. by a user or an automated lifting device on a waste removal vehicle without a jarring or jerking motion, the paddle 110 remains attached to the mounting block 106. That way, the lid 12 may be opened manually by pushing on the pressure sensitive buttons 68, 70, or when the waste container is inverted, gravity allows the lid 12 to open by pulling the weighted mechanism 66 toward the knob 24. The weighted mechanism 66 and its paddles 110, thus, provide a mechanical sensor that can detect whether the container 10 has been unintendedly tipped over or whether it is being tipped over, such as for dumping. Because there is a plurality of paddles 10 disposed on the mounting block 106, the weighed mechanism 66 provides a mechanical sensor that detects unintended tipping of waste container 10 regardless of the direction or distance of tipping. Preferably, four (4) paddles 110 are equiangularly disposed about mounting block 106, such that each paddle 100 may be oriented with one of the side walls 18 where the container 10 is rectangular.
As best illustrated in
The above described locking mechanism 20 provides the following advantages. For example, the impact detection paddles 110 prevent the lock from unlocking when the container 10 falls over and impacts the ground in any direction. In addition, due to the biasing forces applied to the impact detection paddles 110, any impact detection paddle 110 that is actuated to extend from the mounting housing 106 during impact will be returned to the unlock position within the recess of the mounting housing 106 when the container 10 is returned to the upright position. Also, removal of the contents of the container 10 may be performed in any direction. For example, due to the auto release properties of the locking mechanism 20, the container 10 may be dumped in any direction when picked up by an automated arm. No additional devices such as keys are needed to actuate the locking mechanism 20, such that the container can be locked and unlocked directly at the container 10 without any additional device. The dual button 68, 70 knob 24 design prevent animals from accessing the container yet allows for easy access by humans because both buttons need to be pressed simultaneously. Latch 46 may be mounted inside of the container body 14 such that when a plurality of containers are nested, each latch 46 is pressed flat against an associated side wall. Moreover, the locking mechanism 20 is mounted to the lid 12 of the container 10 thereby separating the locking mechanism 20 from the waste stream to prevent undesired deterioration.
The foregoing description of the preferred embodiments of the present invention has been presented for the purpose of illustration in accordance with the provisions of the Patent Statutes. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments disclosed hereinabove were chosen in order to best illustrate the principles of the present invention and its practical application to thereby enable those of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated, as long as the principles described herein are followed. Thus, changes may be made in the above-described invention without departing from the intent and scope thereof. It is also intended that the scope of the present invention be defined by the claims appended thereto.
This application claims the benefit of priority of U.S. Provisional Patent Application No. 62/089,591, filed Dec. 9, 2014, the entire disclosure of which is incorporated herein by reference and to which priority is claimed.
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