| 发明名称 |
Locking ground hole cover |
| 摘要 |
A locking ground hole cover is disclosed comprising a cover plate with a scissor-type apparatus suspended therefrom which apparatus can be actuated from above the cover plate. The apparatus allows for the locking of a hole by pulling the cover plate down into a sealed locked position with the hole mouth. Variations on the device are disclosed.
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| 申请公布号 |
US2001003886(A1) |
申请公布日期 |
2001.06.21 |
| 申请号 |
US20000734355 |
申请日期 |
2000.12.11 |
| 申请人 |
MIHALICZ LARRY;BOYACHEK OREST |
发明人 |
MIHALICZ LARRY;BOYACHEK OREST |
| 分类号 |
E01C23/06;E01F9/011;E02D17/10;(IPC1-7):E04B7/18;E01C11/22;E01C17/00;E01F5/00;E02D29/14;E04B1/62;E04F15/14;E04F15/22 |
主分类号 |
E01C23/06 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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