Portable preparation tool kit for automobile body work

A portable preparation tool kit for automobile body work or the like, comprising:

• a. a portable case for containing a multiplicity of tools, the case including a box with a lid, a recessed panel placed within the box for retaining the tools, and a transparent dust cover placed over the recessed panel;
• b. said multiplicity of tools including a portable rotary tool with accessories, a multiplicity of abrasive tools, and a multiplicity of sand tools;
• c. said portable rotary tool being an angle head rotary pneumatic motor having a housing assembly, a throttler assembly, a rotor assembly, a spindle assembly, and a collet assembly;
• d. said housing assembly of said angle head rotary pneumatic motor including a cylindrical main housing for housing said throttler assembly and said rotor assembly, a locking ring, and an angle head housing for housing said spindle assembly and said collet assembly, the main housing having a top and a bottom, two opposite side openings located adjacent to the bottom, and a bottom port for receiving compressed air, the angle head housing mounted to the top of the main housing by the locking ring;
• e. said throttler assembly of said angle head rotary pneumatic motor being assembled in a lower portion of said main housing and including a valve bushing, a valve, a valve spring, an air regulator, a valve screw, a lever, and a roll pin, where the valve bushing is mounted to said main housing at a first one of said two side openings, an end of the valve is inserted with the valve spring into the air regulator so that the valve spring tends to push the valve out to block air passage through the air regulator, an opposite end of the valve is stuck out from the first side opening through the valve bushing, the air regulator is located inside said main housing and supported by the valve screw, which is in turn mounted to said main housing at a second one of said two side openings, and the lever is pivotally attached by the roll pin to said bottom of said main housing adjacent to the first side opening against the stuck out end of the valve, so that the valve is pressed inwardly to allow air passage through the air regulator when the lever is held towards said main housing;
• f. said rotor assembly of said angle head rotary pneumatic motor being assembled inside an upper portion of said main housing and including a lower ball bearing, a lower plate, two dowel pins, a rotor cylinder, a rotor with a multiplicity of rotor blades, a rotor collar, an upper plate, an upper ball bearing, a pinion, and a motor camp, where the rotor is located inside the rotor cylinder and supported by the lower and upper ball bearings, the lower and upper plates are attached to two respective ends of the rotor cylinder by the two dowel pins respectively, the motor camp is mounted to said top of said main housing, and the pinion is attached to the rotor and extends into said angle head housing;
• g. said spindle assembly of said angle head rotary pneumatic motor being assembled inside said angle head housing and including a rear ball bearing, a gear, a from ball bearing a spindle with a key, and a clamp nut, where the spindle is engaged with the gear through the key and supported by the rear and front ball bearings, the gear is engaged with said pinion of said rotor assembly, the spindle assembly is secured inside said angle head housing by the clamp nut, with a front portion of the spindle extending out of said angle head housing, the front portion of the spindle having two opposite flat surfaces, outer screw threads and an inner chamber;
• h. said collet assembly including a collet and a collet nut, where the collet is retained within said inner chamber of said spindle, the collet nut having inner screws so that it can be fastened onto said front portion of said spindle for tightening the collet, the collet nut having two opposite flat surfaces;
• i. said multiplicity of abrasive tools including a large abrasive tool set and a small abrasive tool set, the large abrasive tool set including a first elongated shaft, a large abrasive wheel base, and a multiplicity of large abrasive wheels, the small abrasive tool set including a second elongated shaft, a small abrasive wheel base, and a multiplicity of small abrasive wheels;
• j. said multiplicity of sand tools including a large sand tool set and a small sand tool set, the large sand tool set including a large conical sand stone, a large spherical sand stone, a large cylindrical sand stone, a large round tipped cylindrical sand stone, and a large sharp tipped cylindrical sand stone, the small sand tool set including a small conical sand stone, a small spherical sand stone, a small cylindrical sand stone, a small round tipped cylindrical sand stone, and a small sharp tipped cylindrical sand stone, where each sand stone has a stem, and the stems of small sand stones are thinner than the stems of the small sand stones;
• k. said collet of said pneumatic motor having an inner bore suitable for receiving said elongated shafts of said large and small abrasive tool sets and said stems of said large sand stones;
• and
• l. said accessories of said portable rotary tool including a different sized alternative collet having an inner bore suitable for said stems of said small sand stones;
• j. whereby said multiplicity of abrasive and sand tool can be interchangeably used with said pneumatic motor, and when high pressure compressed air is sent into said main housing and said lever is pressed, the compressed air will be gushed into said rotor assembly through said throttler assembly and blow said rotor blades to make said rotor rotate, and the rotation is transmitted to said spindle through said pinion and said gear, which in turn drives said abrasive wheel or sand stone attached to said pneumatic motor.

A portable preparation tool kit for automobile body work or the like, comprising:

• a. a portable case for containing a multiplicity of tools, the case having a recessed interior panel for retaining the tools;
• b. said multiplicity of tools including a portable rotary tool with accessories, a multiplicity of abrasive tools, and a multiplicity of sand tools;
• c. said portable rotary tool being an angle head rotary pneumatic motor having a housing assembly, a throttler assembly, a rotor assembly, a spindle assembly, and a collet assembly;
• d. said housing assembly of said angle head rotary pneumatic motor including a cylindrical main housing and an angle head housing attached to a top end of the main housing;
• e. said throttler assembly of said angle head rotary pneumatic motor being assembled in a lower portion of said main housing and including a spring biased valve and an air regulator controlled by a pivoted lever;
• f. said rotor assembly of said angle head rotary pneumatic motor being assembled in an upper portion of said main housing and including a rotor having rotor blades and rotatably supported by bearings, and a pinion connected to the rotor and extending into said angle head housing;
• g. said spindle assembly of said angle head rotary pneumatic motor being assembled inside said angle head housing and including a gear engaged with said pinion of said rotor assembly, and a spindle connected to the gear and having a hollow portion extending out of said angle head housing;
• h. said collet assembly including a collet retained within said hollow portion of said spindle, and a collet nut fastened onto said spindle for tightening the collet;
• i. said multiplicity of abrasive tools including at least two different sized abrasive tool sets, each including an elongated shaft, an abrasive wheel base, and a multiplicity of abrasive wheels;
• j. said multiplicity of sand tools including at least two different sized sand tool sets, each including a multiplicity of different shaped sand stones having identical stems;
• k. said collet of said pneumatic motor being suitable for receiving said elongated shaft of at least one of said at least two abrasive tool sets and said identical stems of at least one of said at least two sand tool sets;
• and
• l. said accessories of said portable rotary tool including at least one different sized alternative collet suitable for receiving said elongated shaft of another one of said at least two abrasive tool sets and said identical stems of another one of said at least two sand tool sets;
• j. whereby said multiplicity of abrasive and sand tools can be interchangeably used with said pneumatic motor, and when high pressure compressed air is sent into said main housing and said lever is pressed, the compressed air will be gushed into said rotor assembly through said throttler assembly and blow said rotor blades to make said rotor rotate, and the rotation is transmitted to said spindle through said pinion and said gear, which in turn drives said abrasive wheel or sand stone attached to said pneumatic motor.