The present invention generally relates to locking devices for waste containers, particularly residential or commercial waste containers. In particular, the invention relates to a waste container locking device which keeps the container closed when a sudden jerk or jarring, such as ground impact, is applied on the container and allows the container to be opened during the dumping or tipping process.
As is well known, residential or commercial waste containers, for use in residential or commercial applications, typically include a base structure covered by a lid. These containers usually contain a block-shaped container with a hinged lid attached to one side thereof. The containers may be emptied by an automated lifting device on certain waste removal vehicles, which tilts the waste containers for emptying the contents of the waste containers. The containers are generally lifted by the lifting mechanism and pivoted in some fashion so that the hinged top of the container opens and the trash contained therein is emptied into the vehicle. The container is then returned to a position on the ground, and the hinged lid closes the top of the container.
The waste containers may be available for purchase by home owners from various home improvement or department stores. When the container is in an upright position, the lid is closed and prevents animals from accessing the waste within the container. However, when the container is tipped over on its side, e.g. by animals or by strong wind, the lid may open, spilling the contents of the container or allowing animals to access the interior of the container.
Locks may be provided to prevent the lid from opening when the waste container is knocked over on its side or to prevent unwanted access to the container. However, these locks may prevent the automated lifting device on the trash removal vehicle from being able to empty the container, or require the operator to manually unlock the waste container before placing it on the automated lifting device.
Therefore, there remains a need for a locking device that prevents the unintended opening of the waste container, such as by an accidental knockdown, but does not require manual unlocking when being tilted over, e.g. by a lifting mechanism.
The present invention provides a locking device for a waste 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 by a dumping operation.
An aspect of the present invention provides a locking device that is designed to be mounted in the lid of the waste container. The locking device contains a hook, a locking member, and an actuating mechanism. The locking member is attached to a wall of the waste container and is in a lockable relationship with the hook which is, directly or indirectly, attached to the lid of the waste container. The latching of the hook to a locking member keeps the lid in a closed position. The actuating mechanism can be placed in a raised position or a fully lowered position. In the raised position, the actuating mechanism unlatches the hook from the locking member to allow the lid to be opened. In a fully lowered position, the actuating mechanism allows the hook to latch to the locking member. In the event that the locking device falls on its side and impacts the ground, a detent mechanism prevents the actuating mechanism from being placed in a raised position, thus preventing unlatching of the hook from the locking member.
Another aspect of the present invention provides a waste container having the locking device mounted therein, preferably in the lid of the container. The lid contains a cutout through which the locking device is mounted.
Methods for making the different aspects of the present invention are also provided.
Other aspects of the invention, including apparatus, devices, kits, 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 foregoing background and summary, as well as the following detailed description of the drawings, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there is shown in the drawings embodiments which are presently preferred. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown. In the drawings:
The exemplary embodiment of the present invention will now be described with the reference to accompanying drawings. The following description of the preferred embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
For purposes of the following description, certain terminology is used in the following description for convenience only and is not limiting. The characterizations of various components and orientations described herein as being “vertical”, “horizontal”, “upright”, “right”, “left”, “side”, “top”, “bottom”, or the like designate directions in the drawings to which reference is made and are relative characterizations only based upon the particular position or orientation of a given component as illustrated. These terms shall not be regarded as limiting the invention. The words “downward” and “upward” refer to position in a vertical direction relative to a geometric center of the apparatus of the present invention and designated parts thereof. The terminology includes the words above specifically mentioned, derivatives thereof and words of similar import. Additionally, the word “a” as used in the claims means “at least one.”
The container 2 has at least one lid 4 on top of a main box 6. Box 6 defines an interior volume for holding waste. The lid 4 is mounted on a lid hinge 8, typically at the rear, of the container 2 so that when an upward force is applied to the lid 4, it opens by pivoting on the lid hinge 8. A locking device 100 is mounted in a cutout 10 in the lid 4. In an exemplary embodiment, the mounting is such that a part of the locking device 100 protrudes above the lid 4 and thus outside of container 2, as best illustrated in
Referring to
In an exemplary embodiment, as best shown in
A locking member 206, as best shown in
The hook 300 is attached, directly or indirectly, to the lid 4, and may be placed where convenient for operation of the locking device 100. As illustrated in the drawings, the hook 300 may be attached to the bottom cover 202 at hole 210, e.g. by a nut/bolt placed through a hole 308 on the hook and a hole 210 on the bottom cover 202. However, if the cover 202 is not present, the hook 300 may be attached directly to the lid 4 of the waste container 2 or to the housing 200 by means apparent to a skilled person upon reading the present disclosure. As best shown in
The safety release 310, as best shown in
The hollow interior of the housing 200 defines a cavity 500. As best shown in
The bottom end 514 of the shaft 502 is connected to a detent mechanism containing one or more bar segments 504 disposed on the shaft, preferably equiangularly around the circumference of the shaft 502. Preferably, two or more bar segments 504 are provided, more preferably two to eight, and most preferably four. Each of the bar segments 504 has a first end 522 connected to the shaft 502, preferably at the bottom end 514, by a pivot 506. The second end 516 of the bar segment 504 is detachably connected to the shaft 502, preferably in a location closer to the housing 200 than the location of the first end 522. Thus, the bar segment 504 is in approximate parallel alignment with the shaft 502. The detachable connection of the second end 516 of the bar segment 504 to the shaft 502 is preferably by magnetic attraction. A magnet 508 may be permanently placed on the second end 516 of the bar segment 504, as best illustrated in
However, the second ends 516 of the bar segments 504, by design, may be disconnected from the shaft 502, e.g. by a force greater than the magnetic force holding them to the shaft 502, such as may occur by a jerking or jarring action (e.g., by impact with the ground) of the locking device 100. The magnetic attraction between the shaft 502 and the bar segments 504 is sufficiently strong to maintain the bar segments 504 in engagement with the shaft 502 when the locking device 100 (and thus the waste container 2) is in its natural upright position or is tilted by a lifting mechanism, but is sufficiently weak to release the bar segments 504 from the shaft 502 when the locking device is subjected to a jerking or jarring motion, such as impact with the ground. As best shown in
In an embodiment, as shown in
In an embodiment, the bar segments 504 may be connected to the shaft 502 via a hub 526. The hub 526 surrounds and is slidable on the shaft 502. Preferably, the hub 526 is retained in slidable engagement with the shaft by a retaining nut 524. When directly connected to the hub 526, the bar segments 504 can slide into the cavity 500 of the housing 200 without the handle 400 being pulled away from the housing 200. That way, during dumping operation, the bar segments 504 can enter the cavity 500 by gravity (thus allowing the lid 4 to be opened) without the handle 400 being displaced from its lowered position. In certain embodiments, the hub 526 may be magnetically or frictionally retained on the shaft, such that the magnet or friction prevents the bar segments 504 from entering the cavity 500 of the housing 200 while the locking device 100 is in freefall. However, when the locking device 100 is tilted into an inverted position, gravity is able to overcome the magnetic or frictional force to pull the bar segments 504 into the cavity 500 of the housing 200. “Inverted position,” as used herein, refers to a position where the handle 400 is lower than the bar segments 504, but not necessarily directly below the bar segments 504.
The detent mechanism may be connected to a deflecting rod 304 which extends at an angle, preferably approximately perpendicular, to the shaft 502 and/or one of the bar segments 504. As best shown in
In use, to open the waste container 2, the user pulls upwardly on the handle 400 to a raised position, which causes the bar segments 504 to be pulled into the cavity 500 of the housing 200. That action also pulls the deflecting rod 304 upwardly toward deflecting arm 306 of the hook 300. When the deflecting rod 304 comes into contact with the deflecting arm 306, it also lifts the deflecting arm 306 upwardly to release the hook 300 from the locking protrusion 302, thus, unlocking the lid 4 and allowing the user to lift the lid 4 to open the waste container 2.
When the user closes the lid 4, gravity pulls the handle 400, shaft 502, and bar segments 504 downwardly, back to the fully lowered position, releasing the deflecting rod 304 from under the deflecting arm 306. Gravity or a spring then pulls the deflecting arm 306 downwardly to latch the hook 300 with the locking protrusion 302, thereby locking the closed lid 4.
In the event that the waste container 2 is knocked over, e.g. by strong wind or animals, the jerking or jarring action, such as by ground impact, on the waste container 2 knocks at least one of the bar segments 504 (preferably the lowest locating bar segment 504 when the waste container 2 is on its side) from its magnetic attachment to the shaft 502. That action, when the waste container 2 is laid over on its side, causes angular deflection of at least one of the bar segments 504 from the shaft 502 and prevents the bar segments 504 from being accidentally pulled into the cavity 500 of the housing 200, thereby preventing release of the hook 300 from the locking protrusion 302. Accordingly, due to the angular deflection of at least one of the bar segments 504 from the shaft 502, the lid 4 cannot be opened when the waste container 2 is on its side. Also, when the waste container 2 is on its side, the rolling member(s) 518 associated with the angularly deflected bar segment(s) 504 roll to the open end(s) of the notch(es) 520 to prevent the angularly deflected bar segment(s) 504 from reattaching to the shaft 502. When the user rights the waste container 2, the rolling member(s) 518 roll to the bottom end of the notch(es) 520 to allow the magnetic attraction between the angularly deflected bar segment(s) 504 and the shaft 502 to reattach the angularly deflected bar segment(s) 504 to the shaft 502. The interaction of the shaft 502 and the bar segments 504 thus provides a mechanical sensor that can detect whether the container 2 has been unintendedly tipped over or whether it is being tipped over, such as for dumping. Because there are a plurality of bar segments 504 equiangularly disposed about shaft 502, the shaft 502 and bar segments 504 provide a mechanical sensor that detects unintended tipping of waste container 2 regardless of the direction or distance of tipping.
On the other hand, when the waste container 2 is laid on its side, e.g. by a user or an automated lifting device on a waste removal vehicle, the bar segment 504 remains magnetically attached to the shaft 502. That way, the lid can be opened by pulling on the handle 400 in a direction away from the housing 200; or when the waste container is inverted, gravity allows the lid 4 to open by pulling the bar segments 504 into the cavity 500 of the housing 200.
Due to the presence of the plurality of bar segments 504 located around the circumference of the shaft 502, the locking device 100 is able to keep the lid 4 of waste container 2 closed, when the waste container 2 falls over and impacts the ground in any direction. Furthermore, the locking device 100 is also able to keep the lid 4 closed regardless of how far the waste container 2 falls over, as long as the impact provides sufficient jerking or jarring to dislodge at least one of the bar segments 504 from the shaft 502. On the other hand, if no impact occurs, the lid 4 can be opened when it is tipped over, such as by a lifting device on a waste removal vehicle.
Although certain presently preferred embodiments of the invention have been specifically described herein, it will be apparent to those skilled in the art to which the invention pertains that variations and modifications of the various embodiments shown and described herein may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the invention be limited only to the extent required by the appended claims and the applicable rules of law.
This application claims the priority of U.S. Provisional Patent Application No. 62/203,163, filed Aug. 10, 2015, the disclosure of which is incorporated herein by reference.
Number | Date | Country | |
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62203163 | Aug 2015 | US |
Number | Date | Country | |
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Parent | 15233599 | Aug 2016 | US |
Child | 15991235 | US |