3577850

Information

• Patent Grant
• 3577850

• References
• Source

• Patent Number

  3,577,850

• Date Filed

  Not available

• Date Issued

  Tuesday, May 11, 1971
  53 years ago

• CPC

  • A61M5/31513 - Piston constructions to improve sealing or sliding
  • B29C55/30 - Drawing through a die
  • B29C65/565 - involving interference fits
  • B29C66/5344 - said single elements being substantially annular, i.e. of finite length
  • A61M5/31531 - Micro syringes
  • B29L2031/7494 - Pistons
  • B29L2031/7544 - Injection needles, syringes
  • Y10S277/924 - Deformation, material removal, or molding for manufacture of seal
  • Y10T29/49917 - by necking in cup or tube wall
  • Y10T29/49929 - Joined to rod
  • Y10T29/49934 - by axially applying force

• US Classifications

  • 029 - Metal working
  • 222 - Dispensing
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 277 - Seal for a joint or juncture