Granted Patent
B2
US 12,285,881 · App. 17/052,454 · Granted Apr 29, 2025
Offset base for router
Inventors:
Tyler S. Sigafoose (Pewaukee, WI); Jeffery D. Spraggon (Oak Creek, WI); Andrew D. Van Hoorn (Menomonee Falls, WI); Zhenxin Dong (Huizhou, CN); Ye Wang (Dongguan, CN)
Assignee:
MILWAUKEE ELECTRIC TOOL CORPORATION
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Abstract
The present invention provides, in one aspect, a router including a motor unit and a base configured to selectively receive the motor unit to support the router on a work piece surface. The motor unit includes a motor and a spindle configured to output a torque supplied by the motor. The base includes an input shaft configured to selectively couple to the spindle, an output shaft laterally offset from the input shaft, and a belt. The input shaft includes a first pulley and the output shaft includes a second pulley and a tool holder. The belt wraps around the first and second pulleys to rotationally couple the input shaft to the output shaft. When the motor unit is received into the base, the spindle couples to the input shaft.
Claims (18)
1. A router comprising:
a motor unit including a motor and a spindle configured to output a torque supplied by the motor; and
a base configured to selectively receive the motor unit to support the router on a work piece surface, the base including
an input shaft configured to selectively couple to the spindle, the input shaft including a first pulley;
an output shaft laterally offset from the input shaft, the output shaft including a second pulley and a tool holder; and
a belt wrapped around the first and second pulleys to rotationally couple the input shaft to the output shaft; and
an adapter bit configured to attach to the spindle and configured to couple the spindle to the input shaft, the adapter bit including a first connection member and a threaded bore that threadably receives the spindle;
wherein the input shaft includes a second connection member that engages the first connection member to couple the adapter bit to the input shaft; and
wherein when the motor unit is received into the base, the spindle couples to the input shaft.
2. The router of claim 1 , wherein the base includes a housing including a keyway configured to lock the output shaft against rotation when a key is inserted through the keyway.
3. The router of claim 1 , wherein the tool holder is configured to support a tool element, and wherein the base includes a set screw rotatable to adjust a cutting depth of the tool element.
4. The router of claim 1 , wherein the belt is configured as a synchronous belt.
5. The router of claim 1 , wherein the base includes a housing and a fan configured to generate an airflow within the base, the fan being supported on the output shaft for co-rotation therewith, wherein the housing includes an inlet opening located adjacent an upper end of the output shaft, wherein air is drawn into the base through the inlet opening when the fan is rotated, wherein the housing includes an outlet opening radially outboard of the fan, and wherein the air is discharged from the outlet opening by the fan.
6. The router of claim 1 , wherein the motor includes a motor shaft, and wherein a portion of the motor shaft defines the spindle.
7. The router of claim 1 , wherein the base further includes a housing having a sleeve, and wherein the motor unit is insertable into the sleeve.
8. The router of claim 1 , wherein the base further includes a housing, a first bearing that rotatably supports the output shaft, and a second bearing that rotatably supports the output shaft.
9. The router of claim 1 , wherein the base further includes a housing, a first bearing that rotatably supports the output shaft, and a second bearing that rotatably supports the output shaft.
10. The router of claim 1 , wherein the base includes a housing and a base plate coupled to the housing, the base plate being configured to interface with the work piece surface.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Feb 16, 2021
From: SIGAFOOSE, TYLER S.; SPRAGGON, JEFFERY D.; VAN HOORN, ANDREW D.; DONG, ZHENXIN; WANG, YE
To: MILWAUKEE ELECTRIC TOOL CORPORATION
Reel/Frame 055271/0959 →
Priority Claims (1)
CN 202020132856.5
· Jan 20, 2020
· national
Continuity (2)
Provisional Application
62848254
· May 15, 2019
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