3721801

Information

• Patent Grant
• 3721801

• References
• Source

• Patent Number

  3,721,801

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  52 years ago

• CPC

  • H05B3/00 - Ohmic-resistance heating
  • B29C65/02 - by heating, with or without pressure
  • B29C65/18 - using heated tools
  • B29C66/1122 - Single lap to lap joints
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/8221 - Scissor or lever mechanisms
  • B29C66/8242 - Pneumatic or hydraulic drives
  • B29C66/8324 - Joining or pressing tools pivoting around one axis
  • B29C66/91211 - with special temperature measurement means or methods
  • B29C66/91213 - and measuring the electrical resistance of a resistive element belonging to said welding jaws, said element being
  • B29C66/91216 - enabling contactless temperature measurements
  • B29C66/91218 - using colour change
  • B29C66/91231 - of the joining tool
  • B29C66/91313 - by measuring the voltage
  • B29C66/91317 - by measuring the electrical resistance
  • B29C66/91421 - of the joining tools
  • B29C66/91655 - by controlling or regulating the current intensity
  • B29C66/961 - involving a feedback loop mechanism
  • B29C66/431 - Joining the articles to themselves
  • B29C66/43121 - Closing the ends of tubular or hollow single articles
  • B29C66/94 - by measuring or controlling the time
  • Y10T156/1313 - Cutting element simultaneously bonds [e.g., cut seaming]

• US Classifications

  • 219 - Electric heating
  • 053 - Package making
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 493 - Manufacturing container or tube from paper