Hole saw guide clamp system
OwnerMichael S. Cooperinventor
Life of this patent
Estimating the term…
Abstract
This invention provides a system for using a portable tool for assisting the making of holes in installed pipes, such as water pipes and the like, to prepare for interconnected piping. Such system preferably utilizes a hole saw guide bushing which is contained in a clamp-head at the end of the fixed jaw of a "Vise-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, center marks, and V-shaped holding surfaces on the clamp-heads.
Claims11
An improved portable tool, for assisting the use of hole-saw means for making a hole in only a first side of a hollow installed pipe, comprising, in combination:
- a. hollow-cylindrical hole-saw guide means, having an axis, for guiding hole-saw means while said hole-saw means is making a said hole in only said first side of said hollow installed pipe;
- b. said tool being constructed and arranged to maintain user selected relative positions between said hollow installed pipe and said hole-saw means while said hole-saw means is making said hole in only said first side of said hollow installed pipe;
- c. first fixed clamp-head means for positioning said hollow-cylindrical hole-saw guide means adjacent said first side of said hollow installed pipe;
- d. second movable and swivelable clamp-head means for holding a second side, opposed to said first said side, of said hollow installed pipe in such manner as to have the centerline of said hollow installed pipe intersect said axis of said hollow cylindrical hole-saw guide means;
- e. said second movable and swivelable clamp-head means comprising a V-shaped member solid and closed along said axis of said hollow cylindrical hole-saw guide means;
- and
- f. grip means for adjusting and positioning said first and second clamp-head means into a user-selected clamping position about said hollow installed pipe.
A method for making a hole in only a first side of a hollow installed pipe, comprising the steps of:
- a. securely positioning a hole-saw guide cylinder adjacent said first side of said hollow installed pipe in a user-selected position;
- b. using said hole-saw guide cylinder to guide a hole-saw sized to fit said hole-saw guide cylinder in such manner as to saw a said hole in only a first side of said hollow installed pipe;
- c. wherein said step of securely positioning comprises the steps of:
- i. securely clamping said pipe in said user-selected position with portable clamp means, said portable clamp means comprising a rigid frame for holding said hole-saw guide cylinder;
- and
- ii. removably securing said hole-saw guide cylinder in said rigid frame;
- d. using position-information means on said portable clamp means, positioning said portable clamp means on said hollow installed pipe to make a horizontal said hole in only a first side of said hollow installed pipe at said user-selected position.
A method for making a hole in only a first side of a hollow installed pipe, comprising the steps of:
- a. securely positioning a hole-saw guide cylinder adjacent said first side of said hollow installed pipe in a user-selected position;
- b. using said hole-saw guide cylinder to guide a hole-saw sized to fit said hole-saw guide cylinder in such manner as to saw a said hole in only a first side of said hollow installed pipe;
- c. wherein said step of securely positioning comprises the steps of:
- i. securely clamping said pipe in said user-selected position with portable clamp means, said portable clamp means comprising a rigid frame for holding said hole-saw guide cylinder;
- and
- ii. removably securing said hole-saw guide cylinder in said rigid frame;
- d. using position-information means on said portable clamp means, positioning said portable clamp means on said hollow installed pipe to make a vertical said hole in only a first side of said hollow installed pipe at said user-selected position.
Dependencies are inferred from the claim text.