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. |
申请公布号 |
CA2292295(A1) |
申请公布日期 |
2001.06.15 |
申请号 |
CA19992292295 |
申请日期 |
1999.12.15 |
申请人 |
MIHALICZ, LARRY;BOYACHEK, OREST |
发明人 |
MIHALICZ, LARRY;BOYACHEK, OREST |
分类号 |
E01C23/06;E01F9/60;E02D17/10 |
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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