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US 2019/0161923 A1Published application
Material removal manufacture, assembly, and method of assembly
AssigneeDynatech Systems, Inc.
InventorsGlenn Mahaffey, JR., Ronald Nealey
Life of this patent
Estimating the term…
Abstract
Milling-drumless products, systems, manufactures, and methods for removing material, such as concrete or asphalt, and a system and method of assembling material removal (for example, grinding and/or cutting) blade elements, or blade elements and spacers, to fabricate a configuration that eliminates a need for a large milling drum are provided. The method allows the configuration to be adjusted easily in a field situation to most any material removal width by exchanging, adding or subtracting blade elements and/or spacers.
Claims23
A milling-drumless system for material removal, said system comprising:
- a mandrel that engages a rotary drive, and that a first piece of the mandrel provides an inner shoulder and an inner cylindrical surface;
- a labyrinth ring that engages the mandrel and provides an attachment point to a larger device;
- and
- at least one of a plurality of blade elements, and a plurality of blade elements and spacers,
- wherein each of the plurality of blade elements and spacers have an inner diameter that fits the mandrel cylindrical surface, and
- wherein each of the plurality of blade elements has a core portion and at least one shoulder portion, wherein the core portion provides a lateral contact surface, and wherein each shoulder portion of the plurality of shoulder portions has at least one abrasive element attached such that the rotary motion of the rotary drive moves the abrasive portion and provides a working zone that removes material in which the zone is placed;
- and
- a mandrel end piece that provides a second interior shoulder, and wherein upon the mandrel pieces being attached, a transverse force holds in place the at least one of a plurality of blade elements and a plurality of blade elements and spacers placed on the mandrel cylindrical surface.
5 more elements
A method of fabricating a milling-drum-less head assembly for material removal comprising:
- engaging a first end portion of a mandrel to a labyrinth ring, wherein the labyrinth ring is sized to engage a drive shaft and provides an attachment point to a larger device,
- wherein the mandrel engages a keyway of the drive shaft, and
- wherein the mandrel comprises a first shoulder portion at the first end portion, the first shoulder portion providing a contact zone for a lateral portion of at least one of a plurality of blade elements and a plurality of blade elements and spacers, and the mandrel having a cylindrical surface portion which mates with an inner diameter of the at least one of a plurality of blade elements and a plurality of blade elements and spacers,
- placing, in a predetermined order and number, at least one of a plurality of blade elements and a plurality of blade elements and spacers onto the mandrel cylindrical portion with a first lateral edge of the at least one of plurality contacting the mandrel contact zone, and the lateral portion of each successive selection of the predetermined order contacting a lateral zone of the preceding selection of the predetermined order,
- attaching an end piece of the mandrel to the mandrel cylindrical portion, wherein the end piece of the mandrel engages the keyway of the drive shaft, the end piece providing an inner shoulder portion that contacts the outer lateral zone of the at last successive selection least one of a plurality, and wherein the attached end piece of the mandrel provides a transverse force parallel to the axis of the cylindrical portion of the mandrel.
2 more elements
A manufacture for use in a material removal system, comprising:
- a plurality of blade elements configured such that a plurality of abrasive elements per blade element are comprised of alternating configurations of a first and a second configuration,
- wherein the first configuration comprises at least two abrasive elements aligned at the same radial distance from the blade element centerline and wherein the second configuration comprises at least one abrasive element aligned at the same radial distance from the blade element centerline as the first configuration,
- and wherein
- a rotation path about the blade element centerline of the single circular abrasive element of the second configuration rotates in the same rotation path as a point equidistant between the centers of the two circular abrasive elements of the first configuration.
1 more element
Dependencies are inferred from the claim text.