Claims
- 1. A plunge base router having a motor to rotate a bit, the router comprising:a base; a housing encasing a motor and being moveable relative to the base on at least one guide post; a cutting depth adjustment mechanism comprising: a rod vertically mounted on the housing and being axially moveable relative to the housing to set a cutting depth of the router, the rod including a threaded portion; a course adjustment knob connected to a gear mounted within the housing and engaging the threaded portion of the rod, the course adjustment knob and gear being rotatable to cause axial movement of the rod relative to the housing; a gear lock lever for locking the course adjustment knob and a gear in a selected position; and a fine adjustment knob secured to one end of the rod and being rotatable with the rod around a longitudinal axis of the rod, the fine adjustment knob and rod being rotatable, when the gear lock lever locks the gear in a selected position, to cause axial movement of the rod relative to the housing.
- 2. The router of claim 1 in which a first indicator ring is positioned adjacent the course adjustment knob and a second indicator ring is positioned adjacent to the fine adjustment knob.
- 3. The router of claim 1 in which a sleeve surrounds a portion of the rod.
- 4. The router of claim 3 in which the sleeve includes an indicator mark as a reference point for the fine adjustment knob.
- 5. The router of claim 1 in which a spring biases the gear against the threaded portion of the rod.
- 6. The router of claim 1 in which the fine adjustment knob is mounted on a first end of the rod and the rod includes a second end that projects downwardly from the housing, and the base includes a surface for engaging the second end of the rod such that, when the router is plunged, the second end of the rod contacts the surface on the base to set the cutting depth of the router.
- 7. The router of claim 6 in which the second end of the rod is fixed to the base such that the rotation of the course adjustment knob and gear causes the housing to move along the length of the rod to position the housing relative to the base and to set the cutting depth of the router.
- 8. The router of claim 7 in which, when the gear lock lever locks the course adjustment knob and gear in a selected position, rotation of the fine adjustment and rod causes the housing to move along the length of the rod and to position the housing relative to the base.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a divisional of U.S. Ser. No. 09/627,497 filed Jul. 28, 2000, now U.S. Pat. No. 6,488,455.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4652191 |
Bernier |
Mar 1987 |
A |
4770573 |
Monobe |
Sep 1988 |
A |
5853274 |
Coffey et al. |
Dec 1998 |
A |