2257892

Information

• Patent Grant
• 2257892

• References
• Source

• Patent Number

  2,257,892

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1941
  83 years ago

• CPC

  • F04B45/027 - having electric drive
  • F01C1/344 - with vanes reciprocating with respect to the inner member
  • F01C1/3442 - the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
  • F01C1/348 - the vanes positively engaging, with circumferential play, an outer rotatable member
  • F01C20/04 - specially adapted for reversible machines or engines

• US Classifications

  • 418 - Rotary expansible chamber devices