Perman & Green
Electrical terminal block
 An electrical terminal block includes a housing top, a housing bottom, and a plurality of electrical contact terminals. The housing top has a pattern of grooves extending into its bottom. The housing bottom has a pattern of tongues extending from its top. The housing top and bottom are ultrasonically welded to each other with the tongues located in at least some of the grooves. Different housing bottoms having different patterns of tongues can be selected to configure the terminal block to accommodate different types of electrical contact terminals having different numbers of contacts. The tongue and groove patterns can electrically isolate bases of contact terminals from each other. 
Burndy Corporation
Y H H H
Y10T H01R H01R H01R
additional inventional inventional additional
James D.
Anderson