US 9,809,995 B2
High-strength lock
Donald E. Irwin, Fredricksburg, VA (US); Michael L. Spears, Chantilly, VA (US); and Robert Dalton, Greenville, SC (US)
Assigned to UNITED STATES POSTAL SERVICE, Washington, DC (US)
Filed by UNITED STATES POSTAL SERVICE, Washington, DC (US)
Filed on Feb. 19, 2016, as Appl. No. 15/48,326.
Application 15/048,326 is a continuation of application No. 12/004,856, filed on Dec. 21, 2007, granted, now 9,273,487.
Claims priority of provisional application 60/876,167, filed on Dec. 21, 2006.
Prior Publication US 2016/0168876 A1, Jun. 16, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. E05B 9/04 (2006.01); E05B 15/16 (2006.01); E05B 17/04 (2006.01); E05C 3/04 (2006.01); B65D 55/14 (2006.01); E05B 27/00 (2006.01); E05B 65/00 (2006.01); E05B 65/52 (2006.01)
CPC E05B 9/04 (2013.01) [B65D 55/14 (2013.01); E05B 15/16 (2013.01); E05B 17/04 (2013.01); E05B 27/0003 (2013.01); E05B 65/006 (2013.01); E05B 65/52 (2013.01); E05C 3/042 (2013.01); Y10T 70/5093 (2015.04)] 16 Claims
OG exemplary drawing
 
1. A locking apparatus, comprising:
a cylinder having a non-cylindrical shape, the cylinder extending from a proximate end to a distal end, and including:
a top edge extending along a length of the cylinder;
a first pair of notched portions disposed on either side of the top edge and parallel to the top edge, the first pair of notched portions extending from the proximate end to a notched portion end disposed between the proximate end and the distal end; and
a second pair of notched portions vertically offset from the first pair of notched portions, the second pair of notched portions extending from the notched portion end to the distal end;
a rotatable plug positioned in the cylinder and having a threaded portion;
a pin assembly configured to receive a key that selectively prevents and permits rotation of the plug; and
a nut cooperating with the threaded portion of the plug.