MASONRY CORING SYSTEM |
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| 申请号 | PCT/US9201997 | 申请日 | 1992-03-12 | 公开(公告)号 | WO9216712A3 | 公开(公告)日 | 1992-10-29 |
| 申请人 | MOHLENHOFF WILLIAM; COX DENNIS; | 发明人 | MOHLENHOFF WILLIAM; COX DENNIS; | ||||
| 摘要 | A masonry coring system (10) for drilling vertical holes in a masonry wall comprises a drill bit (12) in the form of a thin-walled cylinder having a cutting end face, a plurality of cutting elements (14), and a core breaker (26) located within the interior of the cylinder. The coring system (10) further comprises a driver plate (18), a driver shaft (20) having a small axial hole (22) therein fastened to the upper surface of the driver plate (18), a hydraulic motor (24) to rotate the driver shaft (20), a non-rotating plastic pipe (28) slightly larger than and surrounding the driver shaft (20), the plastic pipe (28) resting on the driver plate (18) and containing a plurality of holes (32) located at the end near the driver plate (18). An air compressor (42) forces compressed air through the axial hole (22) in the driver shaft (20). An evacuation system withdraws the drilling dust through the annulus between the driver shaft (20) and pipe (28) and into a dust collection means (38). | ||||||
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| 说明书全文 | |||||||
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