AU3077989A - A trench digging apparatus - Google Patents

A trench digging apparatus

Info

Publication number
AU3077989A
AU3077989A AU30779/89A AU3077989A AU3077989A AU 3077989 A AU3077989 A AU 3077989A AU 30779/89 A AU30779/89 A AU 30779/89A AU 3077989 A AU3077989 A AU 3077989A AU 3077989 A AU3077989 A AU 3077989A
Authority
AU
Australia
Prior art keywords
trench digging
digging apparatus
trench
digging
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.)
Granted
Application number
AU30779/89A
Other versions
AU620591B2 (en
Inventor
Ross Allan Vidler
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.)
Telstra Corp Ltd
Original Assignee
Telstra Corp Ltd
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 Telstra Corp Ltd filed Critical Telstra Corp Ltd
Priority to AU30779/89A priority Critical patent/AU620591B2/en
Publication of AU3077989A publication Critical patent/AU3077989A/en
Application granted granted Critical
Publication of AU620591B2 publication Critical patent/AU620591B2/en
Assigned to AUSTRALIAN AND OVERSEAS TELECOMMUNICATIONS CORPORATION LIMITED reassignment AUSTRALIAN AND OVERSEAS TELECOMMUNICATIONS CORPORATION LIMITED Alteration of Name(s) in Register under S187 Assignors: AUSTRALIAN TELECOMMUNICATIONS CORPORATION
Assigned to TELSTRA CORPORATION LIMITED reassignment TELSTRA CORPORATION LIMITED Request to Amend Deed and Register Assignors: AUSTRALIAN AND OVERSEAS TELECOMMUNICATIONS CORPORATION LIMITED
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/12—Component parts, e.g. bucket troughs
    • E02F3/14—Buckets; Chains; Guides for buckets or chains; Drives for chains
    • E02F3/142—Buckets; Chains; Guides for buckets or chains; Drives for chains tools mounted on buckets or chains which loosen the soil, e.g. cutting wheels, or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
AU30779/89A 1988-02-26 1989-02-27 A trench digging apparatus Ceased AU620591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30779/89A AU620591B2 (en) 1988-02-26 1989-02-27 A trench digging apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPI698188 1988-02-26
AUPI6981 1988-02-26
AU30779/89A AU620591B2 (en) 1988-02-26 1989-02-27 A trench digging apparatus

Publications (2)

Publication Number Publication Date
AU3077989A true AU3077989A (en) 1989-08-31
AU620591B2 AU620591B2 (en) 1992-02-20

Family

ID=25621553

Family Applications (1)

Application Number Title Priority Date Filing Date
AU30779/89A Ceased AU620591B2 (en) 1988-02-26 1989-02-27 A trench digging apparatus

Country Status (1)

Country Link
AU (1) AU620591B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217001A (en) * 1979-06-11 1980-08-12 J. I. Case Company Universal digging boom
US4626032A (en) * 1984-06-18 1986-12-02 Harris Jesse W Rock ditcher
AU579727B2 (en) * 1985-04-24 1988-12-08 Sausar Holdings Pty. Ltd. Trench digging device

Also Published As

Publication number Publication date
AU620591B2 (en) 1992-02-20

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired