# Patent

## Title
Shelf attached to post by connector with rotatable latch and method of assembly

## Abstract

A shelving system includes one or more shelving units. Each shelving unit has posts each post having one or more indents, connectors with slots for mounting the post and one or more shelves. Each shelf has protrusions on a periphery to insert into one of the connector slots. Each shelving unit and shelving system can be assembled, disassembled, and adjusted without the use of tools or other components. The shelving units can be assembled together to create a multiple shelving unit system without the use of tools or other components.

## Background
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates generally to a shelving system. More particularly, this invention pertains to a shelving unit wherein the number and location of the shelves can be adjusted, and a shelving system wherein two or more shelving units can be connected in width and/or depth. The shelving unit and the system can be speedily and easily assembled, disassembled, or adjusted, without tools.
2. Description of Related Art
When assembling shelving systems, shelving pieces are usually connected to a frame or frame pieces with screws. However, to make the connection sturdy, components other than screws, such as screw caps, brackets, or glue, are often necessary. Thus, using screws or the like to assemble the frame and shelving requires the user to perform complicated assembly operations, using an assortment of components. Furthermore, the use of screws or the like implies the need for tools, such as a screwdriver. Consequently, assembly, disassembly, or even adjustment of such a shelving system is slow and inconvenient. Moreover, repeated disassembly and re-assembly wear out screw joints, resulting in a loose shelf connection.
SUMMARY OF THE DISCLOSURE
In one aspect of the invention, a shelving unit includes a post having one or more indents along a length and a shelf having one or more protrusions on a periphery. A connector has a first slot to receive the post and has a latch on the exterior. The latch in a first position engages an indent on the post and in a second position disengages the indent. The connector has a second slot to receive a shelf protrusion. The connector is mounted to the post by inserting the post in the first slot, sliding the connector to a desired location on the post, and putting the latch in the first position that inhibits further sliding of the connector.
In a particular embodiment of the connector, the post mounting slot has an aperture on a periphery that is not joined with another slot. A first latch end shaped to engage the indent is rotatably mounted on the exterior adjacent to the aperture. In an closed position, the first latch end inserts through the aperture and engages the indent on the post, and a second latch end is pushed to lock the first latch end in the indent securing the connector onto the post.
In another aspect of the invention, a second connector is mounted on a second post at the location corresponding to the first shelf, and a second protrusion of the first shelf is inserted into a second slot of the second connector. These steps can be repeated for any additionally desired shelf-to-post connection.
In another aspect of the invention, an apparatus and a method for mounting an additional shelf on the shelving unit includes mounting a connector at the next desired location on the post, closing the latch, and inserting the shelf's protrusion into a slot.
In a third aspect of the invention, an apparatus and a method for a shelving system includes to or more shelving units. A shelving unit includes a connector having a third slot. The post mounting slot receives the post and secured thereon with the latch in a closed position. A second slot receives a shelf protrusion of a first shelf. The third slot receives a protrusion of a second shelf, mounting the first and second shelves jointly using one connector mounted on one post.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates a perspective view of an embodiment of a shelving system according to the present disclosure;
FIG. 2 illustrates assembly of a connector and a shelf on a post;
FIG. 3 illustrates a latch prior to mounting on a connector and a shelf and a post prior to assembly;
FIG. 4 illustrates perspective view of an embodiment of a shelving system;
FIG. 5 illustrates perspective view of a shelving system having shelving units expanded sideways and backwards; and
FIG. 6 illustrates top view of the shelving system of FIG. 5.



DETAILED DESCRIPTION
In general, the shelving system of the present disclosure includes one or more shelving units. Each shelving unit has one or more shelves. Each shelf has a protrusion on a periphery of the shelf which can be vertical or horizontal. The protrusion is inserted into a slot of the slidably mounted connector on the post. The latch can be rotatable about a hinge into a first position and a second position. In the first position, the latch inhibits the connector from sliding along the post. In the second position, the latch enables the connector to slide along the post to a desired height for the shelf.
FIG. 1 illustrates a first embodiment of a shelving system 10 including two shelving units 100a and 100b. Shelving unit 100a has posts 110a, 110b, 110c, and 110d, each having one or more indents 140 along a length of each post. Connector 120a is mounted on post 110a by inserting post 110a into a post mounting slot on connector 120a. Connector 120a is slidable over the length of post 110a to an indent 140 at a desired shelf location, where the connector is secured using latch 150 formed on the exterior of connector 120. Shelf 130a is mounted on connector 120a by inserting a protrusion (not shown), described herein below, on shelf 130a into a second slot on connector 120a. This process may be repeated for any additional protrusion-to-post connections according to the design of the shelving unit, using the necessary number of additional connectors 120a. 
To add another shelving unit 100b to form a shelving system 10, a connector 120b is used to connect shelf 130a to post 110b. Connector 120b has a third slot. After mounting the post 110b on the post mounting slot of connector 120b and mounting the first shelf 130a on post 110b, a second shelf 130b is mounted on connector 120b by inserting a protrusion of shelf 130b into the third slot.
To add an additional shelf 130c to shelving unit 100a, another connector 120a is slid over post 110a, latched at the desired height, and then shelf 130c is mounted similar to that described herein above. This process may be repeated for each additional post-shelf connection for shelf 130c. 
In one embodiment, shelf 130 is a polygonal shape although the shape of the shelf can be curved or a combination of curved and straight edges. In a particular embodiment, the shelf is rectangular and the connectors 120a and 120b are mounted on the shelf substantially at the corners of the shelf. Connectors 120 have slots as described herein and engage posts 110 substantially at the corners of the shelf 130. Each post 110 can have a foot 160, which can make the shelving unit slidable, stable, harmless to the flooring material, or improve the appearance of the shelving unit.
FIG. 2 illustrates an assembly of connector 220 and a corner of a shelf 230. Connector 220 is mounted to post 210 by inserting the post through post mounting slot 280. In one implementation, latch 250 is rotatable about a pin 254 mounted on connector 220 at a latch base 253 to a first position and a second position. Latch 250 has a first end 251 shaped to engage indent 240 on post 210 when the latch is in the first position and disengage the indent when the latch is in the second position. When latch 250 is rotated to the second, disengaged, position, connector 220 is enabled to slide along post 210 to a desired height. When latch 250 is rotated to the first, latched, position, latch end 251 passes through an aperture 270 in post mounting slot 280 to engage indent 240. In the latched position (shown) latch 250 locks connector 220 on post 210 at the height of an engaged indent 240. The connector 220 has a second slot 290a to receive a protrusion on the periphery of a shelf (see FIG. 3). The shelf protrusion inserts into slot 290a, mounting shelf 230 on post 210. Connector 220 can have an additional slot 290b that can receive the shelf protrusion of another shelf.
FIG. 3 illustrates details of the embodiment of FIG. 2 and shows connector 220, shelf 230, and post 210, disassembled. Pin 254 mounts latch 250 at latch end 251 on the exterior of post mounting slot 280 enabling latch 250 to pivot around pin 254. Connector 220 has post mounting slot 280 with aperture 270 through which latch end 251 engages indent 240 on post 210 and can be secured thereon by pushing latch end 252 to cause the latch to rotate around pin 254 to the first, latched, position. The pressure of the latch end 251 against the indent 240 can inhibit movement of the connector 220 along the post 210.
Shelf 330 has one or more vertical protrusions 331 which are shaped for insertion into shelf mounting slot 290a on connector 220. Thus inserted, protrusion 331 allows connection of shelf 330 to post 210 at the location of a connector 220 that can be placed at a desired indent 240.
FIG. 4 illustrates a perspective view of a second embodiment of a shelving system 400 including three shelving units 400a, 400b, and 400c, joined in width. Each shelving unit 400a, 400b, 400c is joined to each another shelving unit using a common post 410b. Each post 410a and 410b can have a foot 460 to protect a floor and to help anchor the system on a floor. It can be seen that such a shelving system can be rapidly assembled and disassembled, and uses only two additional posts for each additional shelving unit. The shelving system can be expanded by adding any number of shelving units, using either one or two posts 410 for each additional shelving unit.
FIG. 5 illustrates another embodiment of a shelving system 500 including three shelving units 500a, 500b, and 500c, configured in a U-shape. Here also, each shelving unit 500a, 500b, and 500c is joined to another using a common post 510b. In a particular embodiment, the posts are rectangular tubes. A connector 520b detachably connects shelving unit 500a to shelving unit 500b by mounting a protrusion of shelf 530a and a protrusion of shelf 530b to common connector 520b. 
FIG. 6 illustrates a top view of the embodiment of FIG. 5. Post 510a supports a single shelving unit, while post 510b and connectors 520a and 520b support and join two shelving units 600a and 600b. Additional shelving units can be joined, either in the U-shaped configuration, straight as in FIG. 1, or diagonally as in FIG. 4. Other patterns of shelving may be created by combining shelving units in a similar manner.
Other embodiments are within the scope of the following claims.

## Claims

1. A shelving unit, comprising:
a post having one or more indents along a length;
a shelf having one or more protrusions on a periphery; and
a connector having a first slot to receive the post that has a latch on the exterior, and a second slot to receive a shelf protrusion,
wherein the latch is rotatable about a hinge on the connector and includes a shaped portion that moves transverse to the axis of rotation such that rotation of the latch to a first position causes the shaped portion engage an indent to inhibit movement of the connector along the post and rotation of the latch to a second position causes the shaped portion to disengage the indent to enable the connector to slide along the post,
wherein the connector is mounted to the post by inserting the post in the first slot, sliding the connector to a desired location on the post, and putting the latch in the first position that inhibits further sliding of the connector.

2. The shelving unit of claim 1, wherein the shelf is rectangular and the protrusion is located substantially at a corner of the shelf.

3. The shelving unit of claim 2, wherein the first and second slots are rectangular.

4. The shelving unit of claim 2, wherein the post is rectangular.

5. The shelving unit of claim 1, comprising:
a foot coupled to an end of the post.

6. A method of assembling a shelving unit, comprising:
providing a post having indents along a length;
inserting the post through a first slot in a connector, the slot having a latch, wherein the latch is rotatable about a hinge on the connector and includes a shaped portion that moves transverse to the axis of rotation such that rotation of the latch to a first position causes the shaped portion engage an indent to inhibit movement of the connector along the post and rotation of the latch to a second position causes the shaped portion to disengage the indent to enable the connector to slide along the post,
sliding the connector along the post until the connector is adjacent an indent at a desired location for a shelf;
moving the latch to the first position; and
inserting a protrusion formed on a periphery of a shelf into a second slot on the connector.

7. The shelving unit of claim 6, wherein the shelf is rectangular and the protrusion is located substantially at a corner of the shelf.

8. The shelving unit of claim 6, wherein the first and second slots are rectangular.

9. The shelving unit of claim 6, wherein the post is rectangular.

10. The shelving unit of claim 6, comprising inserting a foot into an end of the post.

11. A shelving system, comprising:
two or more shelving units, each shelving unit comprising
a post having one or more indents along a length;
one or more shelves each having one or more protrusions on a periphery; and
one or more connectors each having a first slot to receive the post that has a latch on the exterior, wherein the latch is rotatable about a hinge on the connector and includes a shaped portion that moves transverse to the axis of rotation such that rotation of the latch to a first position causes the shaped portion engage an indent to inhibit movement of the connector along the post and rotation of the latch to a second position causes the shaped portion to disengage the indent to enable the connector to slide along the post,
wherein the connector is mounted to the post by inserting the post in the first slot, sliding the connector to a desired location, and putting the latch in the first position that inhibits further sliding of the connector, and the shelf is mounted to the post by inserting the shelf protrusion in the second slot, and
wherein, a connector of a first shelving unit has a third slot and a shelf of a second shelving unit has a second protrusion that is inserted into the third slot.

12. The shelving system of claim 11, wherein the shelf is rectangular and the protrusion is located substantially at a corner of the shelf.

13. The shelving system of claim 11, wherein the first, second, and third slots are rectangular.

14. The shelving system of claim 11, wherein the post is rectangular.

15. The shelving system of claim 11, wherein shelving unit comprises a foot coupled to an end of the post.

16. The shelving system of claim 12, wherein
the connector of the first shelving unit having the third slot receives a protrusion of a shelf having a second protrusion of the first shelving unit,
the shelf of the second shelving unit having the second protrusion has the first protrusion inserted into the first slot of a connector having a third slot, and
the second protrusion of the shelf of the first shelving unit inserts into the third slot of the connector of the second shelving unit.

17. The method of assembling a shelving system, comprising:
assembling a plurality of shelving units, the assembling of each shelving unit comprising the steps of:
providing a post having indents along a length;
inserting the post through a first slot in a connector, the slot having a latch, wherein the latch is rotatable about a hinge on the connector and includes a shaped portion that moves transverse to the axis of rotation such that rotation of the latch to a first position causes the shaped portion engage an indent to inhibit movement of the connector along the post and rotation of the latch to a second position causes the shaped portion to disengage the indent to enable the connector to slide along the post,
sliding the connector along the post until the connector is adjacent an indent at a desired location for a shelf;
moving the latch to the first position; and
inserting a protrusion formed on a periphery of a shelf into a second slot on the connector,
inserting a second protrusion formed on the periphery of a shelf of a first shelving unit into a third slot of a connector of a second shelving unit.