System and method for transferring mail between containers

• US 7,866,936 B2
• Filed: 05/01/2007
• Issued: 01/11/2011
• Est. Priority Date: 05/01/2007
• Status: Active Grant

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Inventors: Wakamiya, Stanley Katsuyoshi, Miskiewicz, Stephanie Lauretano, Timm, Jacob L., Cowgill, Patrick, Shaw, Charles Stewart, Schuck, Karl Lewis
• Primary Examiner(s): Hess; Douglas A
• Application Number:
  US11/797,153
• Publication Number:
  US 20080271971A1
• Time in Patent Office: 1,351 Days
• Field of Search: 414/790, 414/790.1, 271/213, 271/217, 271/306, 271/307
• US Class Current: 414/790
• CPC Class Codes: B65G 2207/46 Tray unloading features
• CPC Class Codes: B65G 65/00 Loading or unloading of vehicles B65G67/00

Abstract

A system and method for transferring mail between containers in an orderly and secure manner. The system and method utilize ejection rods to lift mail from an input tray into a transfer box assembly that deposits the mail into an output tray in an orderly, stable and secure manner, ensuring that mail is not shuffled or lost during the transfer process.

Claims

1. A system for transferring mail between containers comprising:

an input tray configured to hold mail, said input tray having;

a bottom,

a plurality of input tray walls extending generally upwardly from said bottom of said input tray to define a cavity to hold mail, and

one or more openings formed in said bottom of said input tray;

one or more rods movable between a retracted position spaced from said bottom of said input tray, and an extended position wherein said one or more rods project through said one or more openings of said input tray to eject mail from said input tray;

an output tray configured to hold mail; and

a transfer box, movable between a first position to receive mail ejected from said input tray and a second position to deposit mail into said output tray.

2. The system of claim 1, wherein said transfer box has at least one bottom door movable between an open position to receive mail from said input tray and a closed position to retain mail in said transfer box,

3. The system of claim 2, wherein said at least one bottom door has at least one opening configured to close over said one or more rods and support said mail received from said input tray.

4. The system of claim 1, wherein an upper edge of said input tray is oriented at an angle relative to a bottom edge of said transfer box.

5. The system of claim 1, wherein said transfer box has a paddle configured to contact and stabilize said mail during transfer.

6. The system of claim 5, wherein said paddle is further configured to push said mail into said output tray.

7. The system of claim 1, wherein said system contains first and second conveyors, wherein said first conveyor is configured to convey said input tray to and from an unloading position and wherein said second conveyor is configured to convey said output tray to and from a loading position.

8. The system of claim 7, further comprising a frame, and wherein said transfer box is mounted on said frame for movement between positions substantially above said first and second conveyors.

9. The system of claim 7, wherein said first conveyor has one or more openings formed therein in registration with said one or more rods.

10. The system of claim 1, wherein a plane defined by ends of said rods is substantially parallel with a plane defined by said mail within said input tray.

11. The system of claim 1, wherein said input tray has a false bottom oriented at an angle relative to said bottom.

12. The system of claim 11, wherein said false bottom has one or more openings formed therein in registration with said one or more rods.

13. The system of claim 1, further comprising a control system that automatically stops said input tray in said unloading position, moves said transfer box over said input tray, opens said transfer box door, moves said rods from said retracted position to said extended position so that the rods protrude through said openings in said bottom of said input tray, closes said transfer box doors around said rods, retracts said rods, stops said output tray in said loading position, moves said transfer box from said first position to said second position over said output tray, opens said bottom doors of said transfer box, and pushes said mail downward from said transfer box into said output tray.

14. The system of claim 1, wherein said output tray is a standard mail carrier tray,

15. A method for transferring mail between containers comprising:

moving an input tray containing mail into an unloading position, above one or more transfer rods;

moving a transfer box to a first position above the input tray at the unloading position;

ejecting the mail contained within the input tray into the transfer box by extending one or more transfer rods through one or more openings in the bottom of the input tray;

moving said transfer box from said first position to a second position located above an output tray; and

depositing the mail into the output tray from the transfer box,

16. The method of claim 15, wherein said step of depositing the mail into the output tray includes pushing the mail downward into the output tray.

17. The method of claim 16, further comprising the step of opening a bottom of the transfer box prior to pushing the mail downward.

18. The method of claim 15, further comprising the steps of opening a bottom of the transfer box prior to ejecting mail and closing the bottom of the transfer box after the mail is received in the transfer box.

19. The method of claim 15, wherein said step of moving the input tray into an unloading position includes transporting the input tray on a conveyor having one or more openings formed in registration with the transfer rods at the unloading position.

20. The method of claim 15, further comprising a step of tilting the output tray to receive the mail.