Abstract: A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, and a pivoting feed mechanism coupled to the gear box housing to move a spindle for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can also be used in other drilling assemblies.

Abstract: An annular hole cutter includes a cutter body having cutting teeth and a plurality of flutes extending from the cutting teeth around a side wall between a first and second end, with the flutes separated from each other by a land. The hole cutter includes side walls defining primary and secondary flutes with each one of the primary flutes defining first and second helix angles, and with each one of the secondary flutes defining a third helix angle and a fourth helix angle, with the second helix angle being greater than the first helix angle.

Abstract: A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, and a pivoting feed mechanism coupled to the gear box housing to move a spindle for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can also be used in other drilling assemblies.

Abstract: A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector reversibly coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, a pivoting power feed mechanism coupled to the gear box housing, and a spindle coupled to the feed mechanism for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the power feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can be used in other drilling assemblies.

Abstract: A portable electrical assembly includes an electric motor, a power module, and an electric motor power cord. The electric motor power cord is placed within a cavity of a housing of the portable electrical assembly and is operatively connected to the electric motor at first end and to the power module at a second end. The electric motor power cord is configured to move in response to the movement of the electric motor without the creation of sharp bends along its length as the electric motor moves between all of its possible operating positions including an extended position and a resting position and a plurality of intermediate position between the extended and resting position.

Abstract: The present invention is a low profile self-adhering drill having a feed mechanism having an axis of rotation, which is generally perpendicular to the axis of rotation of the drill motor. The feed mechanism includes a quill housing which houses a quill. A spindle is disposed within the quill for holding the tool. The spindle is in engagement with the quill and rotates about the travel axis of the quill relative to the quill and is moveable along the axis with the quill. A rack on the quill is parallel to the travel axis and engages a feed gear such than when the feed gear is rotated the rack and quill move along the travel axis.

Abstract: The present invention discloses an annular hole cutter particularly useful for cutting railroad rails. Railroad rails are extremely hard and normally require drills or cutters which have carbide inserts. The present invention provides uniquely designed cutter with an improved cutter geometry, flute design and thin wall construction to allow the annular cutter to be used with a lower horsepower drill motor making the drill motor portable resulting in a portable rail cutting system.