3620652

Information

• Patent Grant
• 3620652

• References
• Source

• Patent Number

  3,620,652

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • F16J3/06 - Bellows pistons
  • F04B25/02 - of stepped piston type
  • F04B39/0016 - with valve arranged in the piston
  • F04B39/042 - sealing being provided on the piston
  • F04B39/044 - sealing with a rolling diaphragm between piston and cylinder
  • F02G2253/02 - Reciprocating piston seals

• US Classifications

  • 417 - Pumps
  • 074 - Machine element or mechanism
  • 092 - Expansible chamber devices