Patent ID: 6698851
Filing Date: 2004-03-02
Classification: H05K

Abstract:
A vertically stacked control unit comprisingan expandable plurality of intermediate functional modules, with each module having a front side, a back side, a top side, a bottom side, a right side, and a left side; said top side of said module having a first skirt receptacle on the right side and having a second skirt receptacle on the left side; said bottom side of said module having a first skirt on the right side and having a second skirt on the left side; said front side of each module having a top edge and a bottom edge; said back side of each module having a top edge and a bottom edge; said front side top edge having a first U-shaped receiver on the right side and having a second U-shaped receiver on the left side; said front side bottom edge having a first pin on the right side and having a second pin on the left side; said back side top edge having a first groove on the right side and having a second groove on the left side; said back side bottom edge having a first tongue on the right side and having a second tongue on the left side; and whereby a plurality of functional modules can be vertically stacked together with a first skirt and a second skirt of an upper module engaging a first and a second skirt receptacle respectively of a vertically adjoining lower module; with said first tongue and said second tongue of said upper module engaging said first groove and said second groove respectively of said vertically adjoining lower module; and with said first pin and said second pin on said upper module fitted respectively within said first U-shaped receiver and said second U-shaped receiver of said vertically adjoining lower module.