# US 10,870,214 B2 · Router lift > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,214 B2 - Document ID: US10870214B2 - Status: Granted - Kind: B2 - Application number: 16/673,135 - Filed: 2019-11-04 - Published: 2020-02-27 - Granted: 2020-12-22 - Earliest claimed: 2016-02-25 - Assignees: Rockler Companies, Inc. - Applicants: Rockler Companies, Inc. - Inventors: Daniel Lloyd Wenning; Steven Allan Anderson; Steven Donald Krohmer - Web page: https://patentgrep.com/patent/US10870214B2 ## CPC - B27C 5/02: Machines with table - B27C 5/10: Portable hand-operated wood-milling machines; Routers - B27C: PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL (machine tools in general B23; working wood using abrasive, e.g. sanding, devices B24; tools for these purposes B27G) ## Abstract An apparatus configured for use with a router includes a top plate, a carriage, a threaded shaft, a first adjustment mechanism, and a second adjustment mechanism. The carriage is configured to at least partially surround the router. The threaded shaft has a first longitudinal axis, the shaft connecting the top plate and carriage so that the carriage is movable along the first longitudinal axis. Rotation of the first adjustment mechanism about the first longitudinal axis in a first direction and for a number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction at a first speed. Rotation of the second adjustment mechanism about a second longitudinal axis for the number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction and at a second speed that is faster than the first speed. ## Claims ### Claim 1 An apparatus configured for use with a router, the apparatus comprising: a top plate; a carriage configured to at least partially surround the router; a threaded shaft having a first longitudinal axis, the shaft connecting the top plate and carriage so that the carriage is movable along the first longitudinal axis; a first adjustment mechanism, wherein rotation of the first adjustment mechanism about the first longitudinal axis in a first direction and for a number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction at a first speed; and a second adjustment mechanism, wherein rotation of the second adjustment mechanism about a second longitudinal axis for the number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction and at a second speed that is faster than the first speed; wherein each of the first and second adjustment mechanisms is located on the top plate. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein at least one of the first and second adjustment mechanisms is a socket. ### Claim 3 (depends on 1) The apparatus of claim 1, further comprising a gear assembly configured to translate the rotation of the second adjustment mechanism to the rotation of the threaded shaft. ### Claim 4 An apparatus configured for use with a router, the apparatus comprising: a top plate; a carriage configured to at least partially surround the router; a threaded shaft having a first longitudinal axis, the shaft connecting the top plate and carriage so that the carriage is movable along the first longitudinal axis; a first adjustment mechanism, wherein rotation of the first adjustment mechanism about the first longitudinal axis in a first direction and for a number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction at a first speed; a second adjustment mechanism, wherein rotation of the second adjustment mechanism about a second longitudinal axis for the number of rotations is configured to rotate the threaded shaft about the first longitudinal axis in the first direction and at a second speed that is faster than the first speed; and a gear assembly configured to translate the rotation of the second adjustment mechanism to the rotation of the threaded shaft, wherein the gear assembly comprises: a first circular gear having a first splined perimeter edge; and a second circular gear having a second splined perimeter edge; wherein the first splined perimeter edge engages with the second splined perimeter edge so that the first circular gear and the second circular gear rotate in opposite directions. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the second speed is at least twice the first speed. ### Claim 6 A method for using a router lift apparatus, the apparatus comprising: a top plate; a carriage configured to at least partially surround a router; and a threaded shaft having a first longitudinal axis, the shaft connecting the top plate and carriage so that the carriage is movable along the first longitudinal axis of the shaft; the method comprising: rotating a first adjustment mechanism about the first longitudinal axis in a first direction and for a number of rotations, thereby rotating the threaded shaft about the first longitudinal axis at a first speed, by inserting a tool into a first socket of the first adjustment mechanism; removing the tool from the first socket; and rotating a second adjustment mechanism about a second longitudinal axis for the number of rotations, thereby rotating the threaded shaft about the first longitudinal axis at a second speed that is faster than the first speed, by inserting the tool into a second socket of the second adjustment mechanism. ### Claim 7 (depends on 6) The method of claim 6 wherein the top plate comprises a removable insert plate, the method further comprising actuating a release mechanism to release the insert plate from the top plate. ### Claim 8 (depends on 7) The method of claim 7, wherein actuating the release mechanism comprises pressing a button positioned in the top plate. ### Claim 9 (depends on 7) The method of claim 7, further comprising manually lifting a released edge of the insert plate from the top plate. ### Claim 10 (depends on 7) The method of claim 7, further comprising pressing an edge of the removable insert plate into an aperture of the top plate to lodge the insert plate in the top plate. ### Claim 11 (depends on 10) The method of claim 10, wherein pressing an edge of the removable insert plate into an aperture of the top plate comprises engaging the edge of the removable insert plate with a clip positioned at the aperture of the top plate. ### Claim 12 (depends on 6) The method of claim 6, wherein rotating the second adjustment mechanism about the second longitudinal axis is accomplished in the first direction. ### Claim 13 (depends on 1) The apparatus of claim 1, comprising: an aperture in the top plate; a removable insert plate configured to be received in the aperture; and a release mechanism, wherein actuation of the release mechanism releases at least a portion of the removable insert plate from the aperture of the top plate. ### Claim 14 (depends on 4) The apparatus of claim 4, wherein at least one of the first and second adjustment mechanisms is a socket. ### Claim 15 (depends on 4) The apparatus of claim 4, wherein the second speed is at least twice the first speed. ### Claim 16 (depends on 4) The apparatus of claim 4, comprising: an aperture in the top plate; a removable insert plate configured to be received in the aperture; and a release mechanism, wherein actuation of the release mechanism releases at least a portion of the removable insert plate from the aperture of the top plate.