3810420

Information

• Patent Grant
• 3810420

• References
• Source

• Patent Number

  3,810,420

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1974
  50 years ago

• CPC

  • B29C66/8322 - Joining or pressing tools reciprocating along one axis
  • B29C65/224 - being a resistive ribbon, a resistive band or a resistive strip
  • B29C65/745 - using a single unit having both a severing tool and a welding tool
  • B29C66/1122 - Single lap to lap joints
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/4312 - for making flat seams in tubular or hollow articles
  • B29C66/8161 - said pressing elements being supported or backed-up by springs or by resilient material
  • B31B1/00 - Box, carton, envelope or bag making machinery characterised by performing specific operations
  • B31B2219/6046 - on piled sheets
  • B31B2219/929 - Assembling or block-forming of bags Loading bags on a mandrel
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/60 - starting from tubular webs

• US Classifications

  • 493 - Manufacturing container or tube from paper