3851998

Information

• Patent Grant
• 3851998

• References
• Source

• Patent Number

  3,851,998

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • F04C14/06 - specially adapted for stopping, starting, idling or no-load operation
  • F02M59/12 - having other positive-displacement pumping elements
  • F04B23/12 - at least one pump being of the rotary-piston positive-displacement type
  • F04C2/46 - with vanes hinged to the outer member
  • F04C11/005 - of dissimilar working principle

• US Classifications

  • 417 - Pumps
  • 418 - Rotary expansible chamber devices