Patent ID: 7857199
Filing Date: 2010-12-28
Classification: A47G,E05B,E05C,E05G,E06B,Y10T

Abstract:
1. A cluster box mail delivery unit locking system for retaining a closure in a closed position, comprising: a cam latch having an upper margin connectable to the closure for pivotal movement about a first pivot axis between a latched position and an unlatched position, the system including a strike for engaging with the cam latch in the latched position, and disengaging from the cam latch in the unlatched position; a key-turnable member connectable to the closure and connected to an operating arm having an upper margin for pivoting the operating arm relative to the closure about a second pivot axis spaced from the first pivot axis between a normal position and an operated position; a linkage having an upper margin and rotatably coupled at a first end to the operating arm and at a second end to the cam latch for pivoting the cam latch from the latched position to the unlatched position in response to pivotal movement of the operating arm from the normal position to the operated position, and for pivoting the cam latch from the unlatched position to the latched position in response to pivotal movement of the operating arm from the operated position to the normal position; a mounting member connectable to the closure for defining an externally threaded surface that extends substantially concentrically about the first pivot axis; an internally threaded passage formed through the cam latch and configured to be threaded onto the externally threaded surface of the mounting member for mounting the cam latch on the closure for pivotal movement between the latched and unlatched positions; wherein, in the latched position, the upper margins of each of the cam latch, operating arm, and linkage are in substantial alignment.