3911789

Information

• Patent Grant
• 3911789

• References
• Source

• Patent Number

  3,911,789

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • B25D9/145 - for hydraulically actuated hammers having an accumulator
  • F01L21/04 - Valves arranged in or on piston or piston-rod
  • F01L23/00 - Valves controlled by impact by piston
  • F03C1/002 - details; components parts
  • F03C1/0073 - one side of the double-acting piston being always under the influence of the liquid under pressure

• US Classifications

  • 091 - Motors: expansible chamber type
  • 092 - Expansible chamber devices