BACKGROUND OF THE INVENTION In construction, a variety of measuring and indicating devices are used to ensure the correct placement and attachment of the various structural components of a building such as the foundation, walls, floors, roofs, etc. Typically, it is important to ascertain if structures are level in a horizontal plane and plumb in a vertical line in relation to the horizontal plane. Also, a variety of angles, including non-square angles, must be accurately measured and marked. Multiple calculations are required from the data supplied by these tools so that structures are placed correctly within a given foundation and the required accurate placement of structural components. As such, a plurality of tools is usually employed which include various types of levels, which can include line levels, water levels, plumb bobs, framing squares, bevel gauges, compasses, etc.

Obviously, while these tools have received wide acceptance within the building trades, they do not address the time saving conveniences obtained with the tool of the present invention. The tool of the present invention combines many devices into a single tool and provides for extremely accurate and convenient marking of structural components and particularly, provides a tool useful in the ironworker's trade.

The present invention provides a tool which may be used as a level, both in the horizontal and vertical planes, and can also be used for marking various angles, and also incorporates a compass.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multipurpose tool which combines many functions in one and which may be utilized in many different trades.

According to one aspect of the present invention, there is provided a multipurpose tool comprising an elongated body portion, the body portion having a first and second end walls, and first and second pairs of opposed side walls extending between the first and second end walls, at least one of the end walls and one of the side walls being mutually perpendicular to each other, a plurality of level indicating means recessed in the body portion, the level indicating means being designed to indicate a vertical level, a horizontal level and a 45° angle thereto, at least one magnet recessed in the body portion, and a recess formed in one end of the body portion, the recess extending between the first pair of opposed side walls, a protractor arm having a longitudinally extending slot therein mounted in the recess.

In greater detail, the multipurpose tool of the present invention is designed to combine the features of a number of different individual tools. In particular, in a preferred embodiment, the multipurpose tool can function as a bevel square, a combination square, a marking gauge, a torpedo level, a ruler, a compass, etc. It may find use both for the average handyman and also for commercial and industrial use.

Thus, it can be used by woodworkers, metal workers, millwrights, etc.

As aforementioned, the multipurpose tool has a main body portion which may be formed of any suitable material such as a wood or plastic material. In a preferred embodiment, the body portion is formed of a molded plastic material.

Preferably, although not essential, the body portion has a generally rectangular configuration with four sides and two ends. In this respect, in a preferred embodiment, not all of the side walls are necessarily planer-there are various recesses and notches formed therein for purposes which will become clear from the description of the preferred embodiment. It suffices to say that there should be at least one end wall and one side wall each lying in a single plane such that the various level indicating devices may be used.

As aforementioned, there are various level indicating devices and preferably, these are of the bubble tube variety wherein the bubble of a gas must be aligned between two lines to indicate a horizontal, perpendicular or 45° angle. In one embodiment, there may be provided lighting means associated with each of the level indicating devices-these would be small lights adjacent thereto having a battery powered light which may be activated by touch.

The device includes a protractor arm which is retractable within the body of the multipurpose tool and which is preferably rotatable through 270°. In order to precisely align the protractor arm at 270° from its recessed position, there is preferably provided a stop member. Also, in order to retain the protractor arm in any desired position, there may be provided locking means for doing so. Also, the protractor arm is preferably slidable within its mount such that its length may be adjusted.

As will be seen from the description of the preferred embodiments, there are provided various notches and recesses which provide convenient places to hold the marking tools during the use of the device.

BRIEF DESCRIPTION OF THE DRAWINGS Having thus generally described the invention, reference will be made to the accompanying drawings, in which: Figure 1 is a perspective view of one embodiment of a multipurpose tool according to the present invention; Figure 2 is a side elevational view thereof; Figure 3 is a top plan view thereof ; Figure 4 is a bottom plan view thereof; Figure 5 is a side view illustrating operation of the protractor arm; and Figure 6 is a side view illustrating use of the multipurpose tool as a compass.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings in greater detail and by reference characters thereto, there is illustrated a multipurpose tool which is generally designated by reference numeral 10.

Multipurpose tool 10 includes a body portion 12 which, in general terms, has a first pair of opposed side walls 14 and 16, and a second pair of opposed side walls 18 and 20. First and second end walls 22 and 24 respectively are substantially perpendicular to side walls 14,16,18 and 20 such that the overall configuration is rectangular.

Provided on side wall 18 are a plurality of indicia 26 for purposes of measurement such as is commonly used by linear measuring devices.

Multipurpose tool 10 also includes a plurality of bubble tube level members and to this end, there is shown a horizontal bubble tube 28, a vertical bubble tube 30, and bubble tube 32 for a 45° angle. It will be understood that the terms horizontal and vertical are relative and depend on the orientation of the device.

In the illustrated embodiment, a pair of magnets 34 are provided recessed within side wall 18, magnets 34 being particularly useful when the device is employed on steel beams. Also, a groove 48 is formed in side wall 14 to enable mounting on a cylindrical member such as a pipe.

There is also provided a protractor arm which is generally designated by reference numeral 38 and which protractor arm carries indicia 40 thereon again for purposes of measurement. A longitudinally extending slot 42 is used for mounting protractor arm 38 into this end, there is provided a mounting member 44 having a wing nut 46 such that protractor arm 38 can be tightened in any desired position. As shown in Figure 5, protractor arm 38 may extend through 270°. It will also be noted that at its distal end, protractor arm 38 has a bevelled shape while at its proximal end, it has an arcuate configuration.

End wall 24, as may best be seen in Figure 4, has at its outer periphery a recess or notch 50 formed therein. Similarly, end wall 22 has a recess 54 formed thereat.

Recess 54 is useful as a heel portion when the multipurpose tool is placed on an H- beam as is commonly done by ironworkers before tracing a marking line.

Located at end wall 22 is a recess generally designated by reference numeral 38 (Figure 4) and which is designed to receive a moveable pin or compass point 60 which is moveable through a snap and pivot member 62 (shown in dotted lines).

Within side wall 20, there is provided a recess generally designated by reference numeral 64 to permit ready access to protractor arm 38. It will also be noted that the wall is formed such that there is a notch generally designated by reference numeral 66 which may be utilized as a place to receive the end of a tape of a tape measure device in order to measure the distance with respect to the opening of the protractor arm such that the same angle can be transferred.

In order to ensure the perpendicularity of protractor arm 38 with respect to side wall 18, there is provided a stop member 70. Similarly, there are provided moveable stop members 72 and 73 placed such that protractor arm 38 is temporarily stopped at an angle of 45° and 30° respectively. It will also be seen that side wall 20 includes notches 17 with indicia 19 to indicate the angle that protractor arm 38 forms with respect to side wall 20.

In the preferred embodiment, and as shown in the drawings, there is provided a light 74 mounted adjacent horizontal bubble tube 28 such that easier visual access may be gained thereto. Similarly, there is provided a light 76 adjacent vertical bubble tube 30 and a light 78 adjacent 45° bubble tube 32. Lights 74,76 and 78 are LED's which are operated by switch 80. A suitable battery is mounted within door 82.

Protractor arm 38 has, at its distal end, an angled end 84 and in which there is provided a notch 86. Notch 86 is designed to be used with a marking device such as a pencil such that it will not slip when marking an object. Protractor arm 38 also has a proximal end 88 which is of an arcuate configuration and has a notch 90 therein.

As may be seen in Figures 2 and 6, end wall 24 also has an arcuate recess 94.

This facilitates the holding of the device in use and is designed to receive a finger of the user.

A holding device generally designated by reference numeral 98 is designed to be attached to the distal end of protractor arm 38 by means of a retaining member 104.

In turn, holding device 98 is designed to receive a marking device 102 by means of screw 100.

It will be understood that the above described embodiments are for purposes of illustration only and that changes or modifications may be made thereto without departing from the spirit and scope of the invention.