Stephen P. Huda, Shelton, CT (US); Michael J. Sherman, Woodbury, MN (US); Steven J. Haehn, Oakdale, MN (US); and Erik R. Klimpel, Woodbury, MN (US)
Assigned to KX Technologies LLC, West Haven, CT (US)
Filed by KX Technologies LLC, West Haven, CT (US)
Filed on Jul. 28, 2022, as Appl. No. 17/876,171.
Application 16/804,543 is a division of application No. 15/881,324, filed on Jan. 26, 2018, granted, now 10,675,571, issued on Jun. 9, 2020.
Application 17/876,171 is a continuation of application No. 16/804,543, filed on Feb. 28, 2020, granted, now 11,433,327.
Application 15/881,324 is a continuation of application No. 14/800,725, filed on Jul. 16, 2015, granted, now 9,901,852, issued on Feb. 27, 2018.
Application 14/800,725 is a continuation in part of application No. 14/053,086, filed on Oct. 14, 2013, granted, now 9,233,322, issued on Jan. 12, 2016.
Application 14/053,086 is a continuation in part of application No. 13/645,726, filed on Oct. 5, 2012, granted, now 8,673,146, issued on Mar. 18, 2014.
Application 13/645,726 is a continuation of application No. 13/396,316, filed on Feb. 14, 2012, granted, now 8,366,930, issued on Feb. 5, 2013.
Application 13/396,316 is a continuation of application No. 12/188,816, filed on Aug. 8, 2008, granted, now 8,137,551, issued on Mar. 20, 2012.
Prior Publication US 2022/0370934 A1, Nov. 24, 2022
1. A filter key for a filter housing, the filter key having a base structure for attachment to a top surface of said filter housing, said base structure having lateral sides, longitudinal sides, a top surface, a bottom surface, and an attachment finger comprising a stem integral with and extending from said base structure top surface and a winged portion at an end of said stem, said winged portion extending beyond said stem on at least one side of said base structure in a direction parallel to a first plane formed by one of said base structure lateral sides, wherein the attachment finger winged portion includes a first exposed face in a lateral direction parallel to said base structure lateral sides that forms at least in part a first angle with respect to said first plane, such that said first exposed face is not angled parallel with said first plane, said attachment finger including a diamond-shaped cross-section in a second plane perpendicular to said first plane, said diamond-shaped cross-section having two upper exposed faces and two lower exposed faces.
