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  Cabinet having drawer locking deviceUSPTO Application #: 20060186776Title: Cabinet having drawer locking device Abstract: A cabinet includes a number of drawers slidably attached to the receptacle which has a track, each drawer includes an actuator having two inclined surfaces and a flat surface, a number of latch members are slidably received in the track of the receptacle and each includes two end inclined surfaces for engaging with the inclined surfaces of the actuators, and a spring biasing device may bias the end protrusions of the latch members to anchor the other drawers to the receptacle, and thus to anchor and lock the other drawers to the receptacle when one of the drawers is pulled and moved out of the receptacle, and to prevent the other drawers from slipping out of the receptacle inadvertently. (end of abstract) Agent: Charles E. Baxley, Esq. - New York, NY, US Inventor: Meng-Chien Tsai USPTO Applicaton #: 20060186776 - Class: 312408000 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20060186776. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a cabinet, and more particularly to a cabinet having a locking device for locking drawers, and to allow only one of the drawers to be pulled and moved out of the cabinet, and to prevent the other drawers from slipping out of the cabinets or tool boxes inadvertently, particularly when the drawers receive or store or carry heavy objects or tools therein, and thus to prevent the drawers from hurting users. [0003] 2. Description of the Prior Art [0004] Typical cabinets or tool boxes or the like may comprise a number pairs of drawer guides provided or disposed on two sides thereof, and a number of drawers each having two side runners slidably attached to the drawer guides, to slidably attach the drawers to the cabinets or tool boxes, and for receiving or storing various objects or tools. [0005] For example, U.S. Pat. No. 2,572,081 to Wallance discloses one of the typical furniture constructions comprising a number of drawers each having two side runners slidably attached to drawer guides of the furniture constructions. However, the furniture constructions have no lock device to lock the drawers in place, and when one of the drawers is pulled or moved out of the furniture constructions, the other drawers may have a good chance to slip out of the cabinets or tool boxes inadvertently, particularly when the drawers receive or store or carry heavy objects or tools. The slip out drawers and objects may hurt users or people. [0006] U.S. Pat. No. 4,370,007 to Fler discloses a typical sliding drawer suspension comprising a sliding drawer having a channel-section outer rail, a channel-section intermediate rail nested within the channel-section of the outer rail, and an inner channel-section rail nested within the channel-section of the intermediate rail, and a flexible latch latches the inner rail to the intermediate rail during initial opening movement of the suspension, so that the nested inner and the intermediate rails reinforce one another and provide a stronger support. [0007] However, the sliding drawer suspension also has no lock device to lock the drawers in place, when one of the drawers is pulled or moved out of the furniture constructions, the other drawers also may have a good chance to slip out of the cabinets or tool boxes inadvertently, particularly when the drawers receive or store or carry heavy objects or tools. The slip out drawers and objects may hurt users or people. [0008] U.S. Pat. No. 5,615,624 to Terry et al. discloses a typical pass through transaction drawer with a hinged security flap, and also comprising a drawer having two side runners slidably attached to drawer guides of the building or the like. However, similarly, there is no lock device to lock the drawer in place, and when one of the drawers is pulled or moved out of the furniture constructions, the other drawers may have a good chance to slip out of the cabinets or tool boxes inadvertently, particularly when the drawers receive or store or carry heavy objects or tools. [0009] For movable tool boxes, when drawers receive or store or carry heavy objects or tools therein, the drawers with the heavy objects or tools may have a good chance to slip out of the tool boxes inadvertently when one of the drawers is pulled or moved out of the tool box, and the slip out drawers and objects may hurt users or people. [0010] The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional cabinets. SUMMARY OF THE INVENTION [0011] The primary objective of the present invention is to provide a cabinet including a locking device for locking some of the drawers, and to allow only one of the drawers to be pulled and moved out of the cabinet, and to prevent the other drawers from slipping out of the cabinets or tool boxes inadvertently, particularly when the drawers receive or store or carry heavy objects or tools therein, and thus to prevent the drawers from hurting users. [0012] In accordance with one aspect of the invention, there is provided a cabinet comprising a receptacle including a chamber formed therein and defined between two side portions, and including a number pairs of lateral drawer guides attached to the side portions thereof respectively, and including a track formed therein and defined between two side walls and an inner wall, a first drawer and a second drawer each including two side runners slidably attached to the drawer guides of the receptacle, to slidably attach the first and the second drawers to the receptacle, each of the first and the second drawers including an actuator provided thereon and having an upper inclined surface and a lower inclined surface and a flat surface formed therein, a number of latch members slidably received in the track of the receptacle, and each including two end protrusions provided thereon, each of the end protrusions including an inclined surface formed thereon, and arranged for engaging with the inclined surfaces of the actuators, to allow the latch members to be moved up and down along the track of the receptacle by the actuators of the first and the second drawers, and a spring biasing device for biasing the end protrusions of the latch members to engage with the flat surfaces of the actuators, and to anchor the drawers to the receptacle. The inclined surface of the actuator of the first drawer is forced to engage with the inclined surfaces of the latch members and to move the latch members up and down along the track of the receptacle, and to engage the end protrusions of the latch members with the flat surface of the actuator of the second drawer, and thus to anchor the second drawer to the receptacle when the first drawer is pulled and moved out of the receptacle. The other drawers may thus be prevented from slipping out of the receptacle inadvertently, particularly when the drawers receive or store or carry heavy objects or tools therein, and thus to prevent the drawers from hurting users. [0013] A third drawer may further be provided and includes two side runners slidably attached to the drawer guides of the receptacle, and includes an actuator provided thereon and having an upper inclined surface and a lower inclined surface and a flat surface formed therein, the end protrusions of the latch members are forced to engage with the flat surface of the actuator of the third drawer and to anchor the third drawer to the receptacle when the first drawer is pulled and moved out of the receptacle. [0014] The spring biasing device includes a block slidably received in the track of the receptacle, and engaged with the latch members, and a spring member engaged between the block and the receptacle, to bias the block to engage with the latch members, and to force the end protrusions of the latch members to engage with the flat surfaces of the actuators. [0015] The block includes a slot formed therein, a fastener engaged through the slot of the block, and attached to the receptacle, to slidably secure the block to the track of the receptacle, and to limit the block to move relative to the receptacle. The end protrusions of the latch members each may further include a bulge extended upwardly therefrom and having the inclined surface formed thereon, for engaging with the corresponding inclined surfaces of the actuators of the drawers. [0016] The receptacle includes a stop slidably received in the track thereof, and engaged with the latch members, and includes an oblong hole formed therein, a fastener engaged through the oblong hole of the stop, and attached to the receptacle, to slidably secure the stop to the track of the receptacle, and to limit the stop to move relative to the receptacle. [0017] Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0018] FIG. 1 is a perspective view of a cabinet having a drawer locking device in accordance with the present invention; [0019] FIG. 2 is a partial exploded view of the cabinet and the drawer locking device; [0020] FIG. 3 is a partial plan schematic view illustrating the operation of the drawer locking device for the cabinet; [0021] FIG. 4 is another partial exploded view of the drawer locking device; Continue reading... Full patent description for Cabinet having drawer locking device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Cabinet having drawer locking device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Cabinet having drawer locking device or other areas of interest. ### Previous Patent Application: Storage compartment for a refrigerator door Next Patent Application: Door Industry Class: Supports: cabinet structure ### FreshPatents.com Support Thank you for viewing the Cabinet having drawer locking device patent info. 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