Gear cutting – milling – or planing – Milling – Randomly manipulated – work supported – or work following device
Patent
1990-06-25
1991-07-09
Howell, Daniel W.
Gear cutting, milling, or planing
Milling
Randomly manipulated, work supported, or work following device
51242VS, 408 75, 408 835, B23C 300
Patent
active
050300466
ABSTRACT:
The disclosure involves a portable milling machine for remachining radially directed access bores of interest in large check valves which is readily attached to and removed from the valve and is precisely alignable with respect to the center of the bore to be remachined. The machine is capable or remote operation.
REFERENCES:
patent: 842952 (1907-02-01), Hall
patent: 1186403 (1916-06-01), Johnsen
patent: 1980975 (1934-11-01), Beck
patent: 3167866 (1965-02-01), Steineman
patent: 3216119 (1965-11-01), Street
patent: 3331266 (1967-07-01), Brooks
patent: 4468158 (1984-08-01), Pearce et al.
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