| 发明名称 |
Nut for anchoring bolts in mine strata has first internally threaded section and second, deformable threaded section, forming discontinuity in first thread |
| 摘要 |
The nut has a first internally threaded section (30) and a second, deformable threaded section (36). This forms a discontinuity in the first thread. Independent claims are included for: (a) a method for manufacturing the nut; and (b) a system for delaying fastening of a bolt in position until a resin mixture has set which uses the nut.
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| 申请公布号 |
DE10110001(A1) |
申请公布日期 |
2001.12.06 |
| 申请号 |
DE20011010001 |
申请日期 |
2001.03.01 |
| 申请人 |
JENNMAR CORP., PITTSBURGH |
发明人 |
CALANDRA, FRANK JR.;STANKUS, JOHN C.;OYLER, STEVE;COKUS, MICHAEL;OLDSEN, JOHN G. |
| 分类号 |
B21K1/70;E21D21/00;F16B13/14;F16B31/00;F16B37/00;(IPC1-7):F16B37/00;B23G9/00;E21D20/02 |
主分类号 |
B21K1/70 |
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