Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
  • F01L21/00—Use of working pistons or pistons-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines
  • F01L21/02—Piston or piston-rod used as valve members
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25D—PERCUSSIVE TOOLS
  • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
  • B25D9/14—Control devices for the reciprocating piston
  • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25D—PERCUSSIVE TOOLS
  • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
  • B25D9/14—Control devices for the reciprocating piston
  • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
  • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
  • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
  • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
  • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
  • F01L27/00—Distribution or expansion valve-gear peculiar to free-piston machines or engines and not provided for in F01L21/00 - F01L25/00
  • F01L27/04—Delayed-action controls, e.g. of cataract or dashpot type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
  • F03C1/00—Reciprocating-piston liquid engines
  • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
  • F03C1/03—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction
  • F03C1/035—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction one single-acting piston being always under the influence of the liquid under pressure

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Automation & Control Theory (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Percussive Tools And Related Accessories (AREA)
• Fluid-Pressure Circuits (AREA)
• Actuator (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10451636

Family Applications (1)

Country Status (12)

Families Citing this family (10)

Family Cites Families (5)

• 1974
  • 1974-11-14 GB GB49232/74A patent/GB1480753A/en not_active Expired
• 1975
  • 1975-10-28 ZA ZA00756779A patent/ZA756779B/xx unknown
  • 1975-10-30 NL NL7512753A patent/NL7512753A/xx active Search and Examination
  • 1975-11-04 JP JP50131560A patent/JPS5167587A/ja active Granted
  • 1975-11-05 FR FR7533784A patent/FR2291374A1/fr active Granted
  • 1975-11-07 DE DE7535502U patent/DE7535502U/de not_active Expired
  • 1975-11-07 CH CH1440375A patent/CH599835A5/xx not_active IP Right Cessation
  • 1975-11-07 DE DE2550129A patent/DE2550129C2/de not_active Expired
  • 1975-11-07 BE BE161691A patent/BE835367A/xx not_active IP Right Cessation
  • 1975-11-12 CA CA239,402A patent/CA1062585A/en not_active Expired
  • 1975-11-12 IT IT69789/75A patent/IT1050635B/it active
  • 1975-11-13 SE SE7512792A patent/SE413261B/xx not_active IP Right Cessation
• 1977
  • 1977-11-08 US US05/849,719 patent/US4207801A/en not_active Expired - Lifetime

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