# US 8,465,346 B1 · Slidable platform abrasion workstation device for truing model car wheels and axles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,346 B1 - Document ID: US8465346B1 - Status: Granted - Kind: B1 - Application number: 13/669,558 - Filed: 2012-11-06 - Granted: 2013-06-18 - Earliest claimed: 2012-11-06 - Applicants: Stephen Michael Cattaneo - Inventors: Stephen Michael Cattaneo - Web page: https://patentgrep.com/patent/US8465346B1 ## CPC - B24B 41/061: {axially supporting turning workpieces, e.g. magnetically, pneumatically} - B24B 5/04: for grinding cylindrical surfaces externally (grinding combined cylindrical and conical surfaces B24B5/14) - B24B 5/44: for grinding rims of vehicle wheels, e.g. for bicycles - B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS ## Abstract The device is a U-shaped housing comprising slidable platform embodiments providing defined and directed platform movements toward the task of shaping a rotating workpiece substantially at 90 degrees and 180 degrees to the axis of rotation. The device provides for sliding surface planes configured to accept abrasive materials and implements at predetermined angles for the purpose of trimming imperfections and truing model car wheels and axles. As an alternative to more complex machine shop equipment, the child, applying sandpaper to the platform surfaces and a triangular file or rectangular file on platform insets is enabled to effectively direct an abrasive surface which is configured at 90 degrees and 180 degrees to the axis of rotation for the purpose of truing the model car wheel and axle. To further enhance the child's participation, the workpieces can effectively be manually rotated in the slidable platform abrasion workstation device. ## Claims ### Claim 1 A slidable platform abrasion work station device to true model car wheels and axles, comprising: a fixed base platform with a left column and right column forming a U-shaped housing for mounting of a slidable lower platform and a slidable upper platform, a wheel axle rod extending across and bi-mounted in said left and said right column longitudinally horizontal to said base platform and perpendicular to the inner surface of said left column and said right column, said left column and said right column with predetermined, similarly configured and positioned wheel axle rod column holes at the top mid-section to accept said wheel axle rod perpendicular to the inner surface of said left column and said right column and horizontal to said base platform, said right column having an axle hole in a predetermined size and location, horizontal to said base platform and perpendicular to the inner surface of said right column to accept said axles, said lower platform mounted on said fixed base platform, slidable between said left column and said right column, and said upper platform being a rectangular solid which is contiguously mounted on said lower platform with the upper surface longitudinally at an angle to said wheel axle rod. ### Claim 2 (depends on 1) The slidable platform abrasion work station device of claim 1 wherein said left column and said right column have similar rectangular shape and thickness, and said fixed base platform rectangular shaped. ### Claim 3 (depends on 2) The slidable platform abrasion work station device of claim 2 wherein the lower edge of said left column is mounted perpendicular to the left top surface of said fixed base platform and the lower edge of said right column is mounted perpendicular to the right top surface of said fixed base platform to form said U-shaped housing. ### Claim 4 (depends on 1) The slidable platform abrasion work station device of claim 1, further comprising said wheel axle rod with said left column and said right column accepting said wheel axle rod of predetermined diameter and a length, to be positioned through both said left column axle hole and said right column axle hole to cross between said left column and said right column longitudinally horizontal to said upper platform. ### Claim 5 (depends on 4) The slidable platform abrasion work station device of claim 4 wherein said wheel axle rod extends to the right and outside said right column to be mounted in a the chuck of a hand drill to urge rotation of said wheel axle rod. ### Claim 6 (depends on 1) The slidable platform abrasion work station device of claim 1, further comprising a wheel anchor to secure said model car wheels to said wheel axle rod in a fixed workpiece configuration wherein said wheels are rotated on said wheel axle rod through the urging of a said hand drill. ### Claim 7 (depends on 6) The slidable platform abrasion work station device of claim 6 wherein said wheel anchor is cylindrical with a central axle hole of predetermined size to accept said wheel axle rod. ### Claim 8 (depends on 7) The slidable platform abrasion work station device of claim 7 wherein said wheel anchor has a threaded hole of predetermined size extending from the outer rim to enter said central axle hole, perpendicular to said central axle hole, said threaded hole to accept a machine screw of predetermined size and length whereby clockwise rotation of said machine screw within the said wheel anchor is utilized to secure said wheel anchor to said wheel axle rod. ### Claim 9 (depends on 1) The slidable platform abrasion work station device of claim 1, further comprising said lower platform having a rectangular shape and a sloping upper surface, where the front face has a greater thickness than the back face, wherein a wedge shaped lower platform configuration is produced, with said wedge shaped lower platform being mounted on said fixed base platform slidable between said left column and said right column. ### Claim 10 (depends on 9) The slidable platform abrasion work station device of claim 9 further comprising said wedge shaped lower platform wherein a transverse groove extends longitudinally, right to left, across the said sloping upper surface in its mid portion, parallel to said front face. ### Claim 11 (depends on 1) The slidable platform abrasion work station device of claim 1, further comprising a face plate and a threaded hole of predetermined size in the center of the upper portion of said face plate, wherein the lower portion of said face plate is affixed to the mid portion of said fixed base platform such that said threaded hole is above the mid front edge of said fixed base platform. ### Claim 12 (depends on 11) The slidable platform abrasion work station device of claim 11 wherein said threaded hole of said face plate accepts a threaded rod of predetermined diameter and length, comprised of a blunt end and an opposite end with a control knob, whereby the clockwise rotation of said control knob incrementally advances said threaded rod in said face plate, whereby said lower wedge shaped platform and said upper platform are incrementally advanced. ### Claim 13 (depends on 1) The slidable platform abrasion work station device of claim 1, further comprising said upper platform, having a planar, rectangular shape, wherein a slide bar extends transversely along the under surface, in its mid portion, running longitudinally right to left and parallel to the front edge of said upper platform. ### Claim 14 (depends on 13) The slidable platform abrasion work station device of claim 13 wherein said slide bar is positioned to insert into said transverse groove of said lower wedge shaped platform thereby providing slidable mounting of the said upper platform to the top surface of said lower wedge shaped platform, maintaining the sloped configuration provided by said lower wedge shaped platform. ### Claim 15 (depends on 13) The slidable platform abrasion work station device of claim 13 wherein said slide bar provides contiguity of said upper platform to said lower wedge shaped platform such that said upper platform is slidable, front to back, within said U-shaped housing as said lower wedge shaped platform is advanced producing a directed motion toward said wheel axle rod, said slide bar also providing a lateral slidable motion horizontal to said wheel axle rod. ### Claim 16 (depends on 13) The slidable platform abrasion work station device of claim 13, further comprising a 60 degree wedge shaped groove on the right upper surface of said upper platform, extending front to back and parallel to the right edge such that the left, inner most surface of said wedge shaped groove is perpendicular to the top surface of said upper platform. ### Claim 17 (depends on 1) The slidable platform abrasion work station device of claim 1 whereby the combined structural elements of said upper platform in contiguity with said wedge shaped lower platform, sloped and longitudinally horizontal to said wheel axle rod, when incrementally advanced within said U-shaped housing provides the means for a child to direct a mechanical energy in a specific direction and motion toward the task of shaping and truing a rotating workpiece.