×

Method of making a pressure switch

  • US 4,137,116 A
  • Filed: 04/22/1977
  • Issued: 01/30/1979
  • Est. Priority Date: 04/22/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. In the manufacture of flexible switch means, the steps which comprise:

  • continuously feeding an intermediate open work web of resiliently yieldable sealable insulating material, continuously feeding a pair of flexible conductive webs of less width than and into facing relation with opposite faces of said open work web simultaneously with feeding of the latter, simultaneously feeding a pair of flexible non-conductive sealable outer webs of greater width than and into facing relation with opposite outer faces of respective conductive webs, and sealing adjacent longitudinal edges of said outer webs outwardly beyond said conductive webs to projecting longitudinal edge portions of said open work web with said conductive webs remaining unsealed, whereby said conductive webs are each retained in position by and between said open work web and a respective outer web without additional securement.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×