Патент US20030037450 — Layout tool for multiple floor and roof joist in-line through hole drilling

Патенты

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] None submitted

STATEMENT REGARDING FEDERAL SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not Applicable

REFERENCE TO MICROFICHE APPENDIX

[0003] None Submitted

BACKGROUND OF THE INVENTION

[0004] This method and apparatus is the result of the need for an economical and simple labor saving device for the installation of ridge conduits and pipes that pass through multiple floor and/or roof joists in new building construction. These pipes and conduits are for the conveyance of water, waste gas, fire sprinklers and electrical wires. The installation of these pipes and conduits require the drilling of in-line holes to accommodate them. The Layout for these holes is time consuming and difficult especially when gravity fall waste lines require a ¼″ drop per each foot of run. This device will accomplish this by mounting it in the known starting point of the pipe run and setting a target at the end of the known pipe run (as the diagram shows on page 7), if gravity fall is required, than a simple adjustment of the vertical adjustment screw will accomplish the angle needed.

[0005] With the use of the aiming laser, on the layout device, mounted at the start of the pipe run it can be adjusted, with the horizontal and vertical adjustment screws, to align with the target at the end of the pipe run. Then the drilling laser is turned on showing with the laser beam where the second joist is to be drilled. Each time the joist is drilled the laser will shine through the drilled hole to show where the next joist is to be drilled until the target is reached or beyond if needed.

[0006] The present two methods are to either measure each joist off a perpendicular wall for the horizontal location of the required hole and measure up from the bottom of each joist to locate the vertical position of the required hole. When the holes require a vertical gravity drop for each foot of run this is more difficult and time consuming. Or the other method is to stretch a layout line from the start of the known pipe run to the end of the known pipe run and measured up from the bottom of each joist to locate the vertical position of the required holes. When the holes require a vertical gravity drop for each foot of run this again is more difficult and time consuming.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007]FIG. 1 Is a side view of the layout tool.

[0008]FIG. 1A Is a expanded assembly drawing of the layout tool.

[0009]FIG. 2 Is a side view showing the layout tool mounted to a TJI floor joist.

[0010]FIG. 3 Is a top view showing the layout tool mounted to a TJI floor joist.

[0011]FIG. 4 Is a drawing showing how to use the layout tool.

LIST OF REFERENCE NUMERALS UTILIZED IN THE DRAWINGS

[0012]1 —Vertical adjusting screw

[0013]1 A—Layout Tool

[0014]2 —Horizontal adjusting screw

[0026]14 —TJI Floor joist

[0027]15 —Aiming target

[0028]16 —Sub-flooring

[0029]17 —Lower aiming laser beam (level)

[0030]18 —Lower aiming laser beam (¼″ fall to the foot)

[0031]19 —Upper drill laser beam (level)

[0032]1 —VERTICAL ADJUSTING SCREW

[0046]15 —AIMING TARGET

[0047]16 —SUB-FLOORING

[0048]17 —AIMING LASER BEAM (LEVEL)

[0049]18 —AIMING LASER BEAM (¼′ TO THE FOOT FALL)

[0050]19 —DRILLING LASER BEAM (LEVEL)

[0051]20 —DRILLING LASER BEAM (¼′ TO THE FOOT FALL)

[0052]21 —DRILLING LASER BEAM (90 DEGREES TO JOIST)

[0053]22 —CONCRETE FLOOR

[0054]23 —2 X WOOD FRAMING

[0055]20 —Upper drill laser beam (¼″ fall to the foot)

[0056]21 —Upper drill laser beam (90 degrees to the joist)

[0057]22 —Concrete floor

[0058]23 —2 X wood framing

LIST OF REFERENCE LETTERS UTILIZED IN THE DRAWINGS

[0059] A—Drill hole where 1 st hole is needed and mount layout tool.

[0060] B—Hang target where last hole is needed.

[0065] G—Upper drill laser beam now emits through the new hole to the next joist to be drilled, etc. etc.


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