AU3542071A - Hydraulic hammer with back pressure isolation - Google Patents

Hydraulic hammer with back pressure isolation

Info

Publication number
AU3542071A
AU3542071A AU35420/71A AU3542071A AU3542071A AU 3542071 A AU3542071 A AU 3542071A AU 35420/71 A AU35420/71 A AU 35420/71A AU 3542071 A AU3542071 A AU 3542071A AU 3542071 A AU3542071 A AU 3542071A
Authority
AU
Australia
Prior art keywords
back pressure
hydraulic hammer
pressure isolation
isolation
hammer
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
AU35420/71A
Other versions
AU457597B2 (en
Inventor
Frederick Blessig Ernst
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.)
Worthington Corp
Original Assignee
Worthington Corp
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 Worthington Corp filed Critical Worthington Corp
Application granted granted Critical
Publication of AU457597B2 publication Critical patent/AU457597B2/en
Publication of AU3542071A publication Critical patent/AU3542071A/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
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S173/00—Tool driving or impacting
    • Y10S173/04—Liquid operated

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
AU35420/71A 1970-11-09 1970-11-05 Hydraulic hammer with back pressure isolation Expired AU457597B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8796670A 1970-11-09 1970-11-09
USUS87,966 1970-11-09

Publications (2)

Publication Number Publication Date
AU457597B2 AU457597B2 (en) 1973-05-10
AU3542071A true AU3542071A (en) 1973-05-10

Family

ID=

Also Published As

Publication number Publication date
CA935354A (en) 1973-10-16
DE2155701B2 (en) 1975-02-06
US3695366A (en) 1972-10-03
DE2155701A1 (en) 1972-05-10
DE2155701C3 (en) 1975-10-09
GB1360446A (en) 1974-07-17
FR2113667A5 (en) 1972-06-23

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