Percussion tools

• US 3,189,104 A
• Filed: 09/09/1960
• Issued: 06/15/1965
• Est. Priority Date: 09/09/1960
• Status: Expired due to Term

• Current Assignee: Douglas W. Jamer, Richard A. Kirkham
• Original Assignee: Douglas W. Jamer, Richard A. Kirkham
• Inventors: Jamer, Douglas W., Kirkham, Richard A.
• Application Number:
  US04/054,864
• Time in Patent Office: 1,740 Days
• US Class Current: 173/154
• CPC Class Codes: E01C 23/124 moved rectilinearly, e.g. road-breaker apparatus with reciprocating tools, with drop-hammers
• CPC Class Codes: E21B 1/34 the impulse member being a piston of an internal-combustion engine
• CPC Class Codes: E21B 19/087 by means of a swinging arm
• CPC Class Codes: E21B 6/00 Drives for drilling with combined rotary and percussive action
• CPC Class Codes: E21B 7/02 Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting

Claims

1. IN APPARATUS OF THE CHARACTER DESCRIBED FOR POWERING A PERCUSSION TOOL AND FOR SUPPLYING PRESSURE FLUID FOR DRIVING AUXILIARY FEEDING MEANS AND THE LIKE TO BE USED WITH SAID TOOL AND HAVING A COMBUSTION ENGINE WITH A COMBUSTION CYLINDER AND AN AUXILIARY CYLINDER COAXIAL THEREWITH, THE COMBINATION WHICH COMPRISES A MOTOR PISTON RECIPROCABLE IN SAID COMBUSTION CYLINDER, A RADIAL FLANGE ON SAID MOTOR PISTON RECIPROCABLE THEREWITH IN SAID AUXILIARY CYLINDER FOR COMPRESSING FLUID IN SAID AUXILIARY CYLINDER, A HAMMER PISTON RECIPROCABLE IN SAID COMBUSTION CYLINDER AND DRIVEN BY COMBUSTION IN SAID COMBUSTION CYLINDER IMPARTING IMPACT TO SAID PERCUSSION TOOL, A RECEIVING CHAMBER ADJACENT SAID HAMMER PISTON FOR RECEIVING COMPRESSED FLUID FROM SAID AUXILIARY CYLINDER AND FOR SUPPLYING SAID FLUID TO SAID HAMMER PISTON FOR THE RETURN THEREOF AFTER EACH IMPACT STROKE, A CONDUIT IN FLOW COMMUNICATION WITH SAID AUXILIARY CYLINDER AND SAID RECEIVING CHAMBER FOR CARRYING COMPRESSED FLUID FROM SAID AUXILIARY CYLINDER TO SAID RECEIVING CHAMBER, A CONNECTION DISPOSED IN SAID RECEIVING CHAMBER WITH SAID CONNECTION HAVING A PASSAGE DISPOSED THEREIN FOR SUPPLYING PRESSURE FLUID TO SAID AUXILIARY MEANS, AND ADJUSTING MEANS IN SAID CONNECTION FOR MAINTAINING THE SAID PRESSURE FLUID IN SAID RECEIVING CHAMBER AT A PREDETERMINED CONSTANT PRESSURE.