GB1160270A - Fluid Pressure Reciprocating Motor - Google Patents

Fluid Pressure Reciprocating Motor

Info

Publication number
GB1160270A
GB1160270A GB5008865A GB5008865A GB1160270A GB 1160270 A GB1160270 A GB 1160270A GB 5008865 A GB5008865 A GB 5008865A GB 5008865 A GB5008865 A GB 5008865A GB 1160270 A GB1160270 A GB 1160270A
Authority
GB
United Kingdom
Prior art keywords
chamber
piston
exhaust
pressure
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5008865A
Inventor
George Lancaster Ronson
Anthony George Lithgow Shore
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DOUGHTY TECHNICAL DEVELOPMENTS
Original Assignee
DOUGHTY TECHNICAL DEVELOPMENTS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DOUGHTY TECHNICAL DEVELOPMENTS filed Critical DOUGHTY TECHNICAL DEVELOPMENTS
Priority to GB5008865A priority Critical patent/GB1160270A/en
Publication of GB1160270A publication Critical patent/GB1160270A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F01L25/066—Arrangements with main and auxiliary valves, at least one of them being fluid-driven piston or piston-rod being used as auxiliary valve
    • 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
    • F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
    • F03C1/0073—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

1,160,270. Hydraulic and pneumatic reciprocating motors; valve gear. DOWTY TECHNICAL DEVELOPMENTS Ltd. Nov. 22, 1966 [Nov. 25, 1965], No. 50088/65. Headings F1A, F1M and F1S. A hydraulic or pneumatic motor for actuating a portable tool, e.g. a drill, has differential working chambers 7 and 8, chamber 8 being continuously supplied with pressure fluid from connection 9, and chamber 7 being alternately connected to supply and exhaust by a slide valve 19 actuated by fluid-pressure controlled by valve means 14, 15 on the motor piston section 3. To prevent pulsations in the low-pressure hose connection 12, it is connected by pipe 36 to a chamber 31, which increases in volume as working chamber 7 decreases in volume, so that during the upward stroke of piston 1 part of the exhaust fluid from chamber 7 passes to chamber 31 and the rest through connection 12. On the following downward stroke, the fluid in chamber 31 passes to connection 12. The effective surface areas of the piston 1 in chambers 8 and 31 are each half the effective area of the piston in chamber 7. Drive is transmitted by piston 1 striking the tool 32. In the embodiment Fig. 2 (not shown), the lower end of the piston (41) is made massive to act as a hammer, and is guided in a chamber connected to exhaust, an intermediate portion of the piston working in a chamber continuously supplied with pressure fluid, and the upper portion of the piston working in a chamber alternately connected to pressure and exhaust by the slide valve. In the embodiment Fig. 3 (not shown), the piston has integral piston rods extending through either end of the housing, one rod (76) engaging the tool (99). An upper working chamber (78) is continuously connected to pressure, an intermediate.chamber (73) is connected to exhaust and a lower chamber is alternately connected to pressure and exhaust by the slide valve.
GB5008865A 1965-11-25 1965-11-25 Fluid Pressure Reciprocating Motor Expired GB1160270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5008865A GB1160270A (en) 1965-11-25 1965-11-25 Fluid Pressure Reciprocating Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5008865A GB1160270A (en) 1965-11-25 1965-11-25 Fluid Pressure Reciprocating Motor

Publications (1)

Publication Number Publication Date
GB1160270A true GB1160270A (en) 1969-08-06

Family

ID=10454605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5008865A Expired GB1160270A (en) 1965-11-25 1965-11-25 Fluid Pressure Reciprocating Motor

Country Status (1)

Country Link
GB (1) GB1160270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433660A1 (en) * 1978-07-29 1980-03-14 Kawasaki Heavy Ind Ltd HYDRAULIC CYLINDER, WITH INCREASED LOAD AT THE END OF STROKE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433660A1 (en) * 1978-07-29 1980-03-14 Kawasaki Heavy Ind Ltd HYDRAULIC CYLINDER, WITH INCREASED LOAD AT THE END OF STROKE

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed