Gear cutting – milling – or planing – Milling – Randomly manipulated – work supported – or work following device
Patent
1991-02-28
1991-12-24
Howell, Daniel W.
Gear cutting, milling, or planing
Milling
Randomly manipulated, work supported, or work following device
24278, 144134D, 144136C, 403344, 409204, 411187, 411366, B23C 120
Patent
active
050747240
ABSTRACT:
A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring is formed as a split ring with projections adjacent opposite sides of the split, each with a frusto-conical camming surface. A circular clamp knob mounted for threaded rotation on a bolt passing through the projections radially with respect to the router motor housing bears against the camming surfaces so as to squeeze the ring in order to effect a clamping action as the knob is moved inwardly. In order to provide limit stops for preset depths of cut, a pair of stop rings are provided which are angularly rotatable on the router base. Each of the stop rings includes an interference projection and the adjustment ring has a tab fixedly mounted thereon which extends to a point between the interfering projections. The stop rings may be fixed to the router base to limit the range of angular rotation of the adjustment ring.
REFERENCES:
patent: 1899883 (1933-02-01), Sacrey
patent: 2452186 (1948-10-01), Fluharty
patent: 2613704 (1952-10-01), Sacrey
patent: 2867251 (1959-01-01), Moretti et al.
patent: 3466973 (1969-09-01), Rees
patent: 4439902 (1984-04-01), Huxtable
patent: 4679606 (1987-07-01), Bassett
Davis David L.
Howell Daniel W.
Ryobi Motor Products Corp.
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