3679518

Information

• Patent Grant
• 3679518

• References
• Source

• Patent Number

  3,679,518

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1972
  52 years ago

• CPC

  • G05D23/1909 - whose output amplitude can only take two discrete values
  • B29C65/223 - comprising several heated wires
  • B29C65/228 - characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
  • B29C65/30 - Electrical means
  • B29C66/1122 - Single lap to lap joints
  • B29C66/4312 - for making flat seams in tubular or hollow articles
  • B29C66/72328 - Paper
  • B29C66/73921 - characterised by the materials of both parts being thermoplastics
  • B29C66/81431 - comprising a single cavity
  • B29C66/83533 - Cooperating jaws mounted on cooperating chains and moving in a closed path
  • B29C66/849 - Packaging machines
  • B29C66/91421 - of the joining tools
  • B29C66/91653 - by controlling or regulating the voltage
  • B29C66/91951 - in explicit relation to time
  • B29C66/9321 - with special speed measurement means or methods
  • G05D23/1951 - with control of the working time of a temperature controlling device
  • B29C66/71 - characterised by the composition of the plastics material of the parts to be joined
  • B29C66/91443 - following a temperature-time profile
  • B29C66/91643 - following a heat-time profile
  • B29C66/91931 - in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
  • B29C66/961 - involving a feedback loop mechanism

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 053 - Package making
  • 219 - Electric heating