B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
B23D 45/00 (2006.01) B23B 47/28 (2006.01) B23D 61/00 (2006.01) B25B 7/02 (2006.01) B25B 7/12 (2006.01) B25B 7/22 (2006.01)
Patent
CA 2195154
A system and method are provided for using a portable tool for assisting the making of holes in installed pipes, e.g., as water pipes and the like, to prepare for interconnected piping. Such system includes a hollow, cylindrical hole-saw guide, having an axis, for guiding the hole-saw while the hole-saw is making a hole in only the first side of the hollow installed pipe. The tool is constructed and arranged to maintain user- selected relative positions between the hollow installed pipe and the hole-saw while the hole-saw is making the hole in only the first side of the hollow installed pipe. A first fixed clamp-head is provided for positioning the hollow, cylindrical hole-saw guide adjacent the first side of the hollow installed pipe. A second movable and swivelable clamp-head is provided for holding a second side, opposed to the first side, of the hollow installed pipe in such manner as to have the centre line of the hollow installed pipe intersect the axis of the hollow cylindrical hole-saw guide. The second movable and swivelable clamp-head includes a V- shaped member solid which is closed along the axis of the hollow cylindrical hole-saw guide. A grip is provided for adjusting and positioning the first and second clamp-heads into a user-selected clamping position about the hollow installed pipe. The hole saw guide is preferably contained in a clamp-head at the end of the fixed jaw of a VICE- GRIP .TM. -like device. Such clamp-head accommodates various sizes of guide bushings and hole- saws for making various size holes in various size pipes. Other features assist accurate hole positioning, e.g., horizontal and vertical levels, centre marks, and V-shaped holding surfaces on the clamp-heads.
Borden Ladner Gervais Llp
Cooper Michael S.
LandOfFree
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