Excavating – Ditch filler
Patent
1979-02-15
1980-06-24
Crowder, Clifford D.
Excavating
Ditch filler
37DIG12, 172702, 172777, 403408, E02F 928
Patent
active
042088178
ABSTRACT:
PCT No. PCT/US79/00090 Sec. 371 Date Feb. 15, 1979 Sec. 102(e) Date Feb. 15, 1979, PCT Filed Feb. 15, 1979, Ser. No. 30,244. A router bit assembly for an earth working apparatus (10, 12) including earth working means having a generally horizontally elongated blade (18) with a generally vertically extending side member (22) at at least one end of the blade, a relatively tall router bit (32) formed of plate metal extending along the side member and in proximity to the blade, a relatively short support (34) for the router bit interposed between the router bit and the side member and having a first lip (36) overlying and substantially abutting the upper extremity (38) of the router bit and a second lip (40) underlying the lower extremity (30) of the side member, and removable bolts (50) securing the router bit and the support to the side member.
REFERENCES:
patent: 2831275 (1958-04-01), Kimsey et al.
patent: 3032901 (1962-05-01), Dils, Jr.
patent: 3088232 (1963-05-01), Gilbertson
patent: 3456370 (1969-07-01), Gilbertson
patent: 3465833 (1969-09-01), Lutz
patent: 3643357 (1972-02-01), Benning et al.
patent: 3961788 (1976-06-01), Helton et al.
patent: 4007550 (1977-02-01), Stepe
Caterpillar Tractor Co.
Crowder Clifford D.
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