CA1097332A - Foret pour le travail en plafond dans les galeries de mine - Google Patents

Foret pour le travail en plafond dans les galeries de mine

Info

Publication number
CA1097332A
CA1097332A CA310,232A CA310232A CA1097332A CA 1097332 A CA1097332 A CA 1097332A CA 310232 A CA310232 A CA 310232A CA 1097332 A CA1097332 A CA 1097332A
Authority
CA
Canada
Prior art keywords
bit
drill
cutting
shank
prongs
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
CA310,232A
Other languages
English (en)
Inventor
Kenneth C. Emmerich
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.)
Fansteel Inc
Original Assignee
Fansteel Inc
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
Priority claimed from US05/910,616 external-priority patent/US4165790A/en
Application filed by Fansteel Inc filed Critical Fansteel Inc
Application granted granted Critical
Publication of CA1097332A publication Critical patent/CA1097332A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA310,232A 1978-05-30 1978-08-29 Foret pour le travail en plafond dans les galeries de mine Expired CA1097332A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US910,616 1978-05-30
US05/910,616 US4165790A (en) 1976-12-10 1978-05-30 Roof drill bit

Publications (1)

Publication Number Publication Date
CA1097332A true CA1097332A (fr) 1981-03-10

Family

ID=25429063

Family Applications (1)

Application Number Title Priority Date Filing Date
CA310,232A Expired CA1097332A (fr) 1978-05-30 1978-08-29 Foret pour le travail en plafond dans les galeries de mine

Country Status (1)

Country Link
CA (1) CA1097332A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107939295A (zh) * 2017-12-31 2018-04-20 重庆聚亨机械有限公司 凿岩机械液压一体化钻车

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107939295A (zh) * 2017-12-31 2018-04-20 重庆聚亨机械有限公司 凿岩机械液压一体化钻车
CN107939295B (zh) * 2017-12-31 2024-04-19 河北迈磊凯机电科技有限公司 凿岩机械液压一体化钻车

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Legal Events

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