DE2220852C3 - - Google Patents

Info

Publication number
DE2220852C3
DE2220852C3 DE19722220852 DE2220852A DE2220852C3 DE 2220852 C3 DE2220852 C3 DE 2220852C3 DE 19722220852 DE19722220852 DE 19722220852 DE 2220852 A DE2220852 A DE 2220852A DE 2220852 C3 DE2220852 C3 DE 2220852C3
Authority
DE
Germany
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
DE19722220852
Other languages
German (de)
Other versions
DE2220852A1 (en
DE2220852B2 (en
Inventor
Heinrich-Peter 4300 Essen Schaefer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19722220852 priority Critical patent/DE2220852B2/en
Publication of DE2220852A1 publication Critical patent/DE2220852A1/en
Publication of DE2220852B2 publication Critical patent/DE2220852B2/en
Application granted granted Critical
Publication of DE2220852C3 publication Critical patent/DE2220852C3/de
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/26—Shoes for connecting arch members to longitudinal struts
DE19722220852 1972-04-28 1972-04-28 Bolt lock for the expansion of the route Granted DE2220852B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722220852 DE2220852B2 (en) 1972-04-28 1972-04-28 Bolt lock for the expansion of the route

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722220852 DE2220852B2 (en) 1972-04-28 1972-04-28 Bolt lock for the expansion of the route

Publications (3)

Publication Number Publication Date
DE2220852A1 DE2220852A1 (en) 1973-11-15
DE2220852B2 DE2220852B2 (en) 1974-04-04
DE2220852C3 true DE2220852C3 (en) 1974-11-07

Family

ID=5843523

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722220852 Granted DE2220852B2 (en) 1972-04-28 1972-04-28 Bolt lock for the expansion of the route

Country Status (1)

Country Link
DE (1) DE2220852B2 (en)

Also Published As

Publication number Publication date
DE2220852A1 (en) 1973-11-15
DE2220852B2 (en) 1974-04-04

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee