Excavating – Railway graders – Side former
Patent
1992-04-20
1993-03-30
Taylor, Dennis L.
Excavating
Railway graders
Side former
371175, 37118R, 37141R, 37DIG3, 37DIG12, E02F 376, E02F 502
Patent
active
051972123
ABSTRACT:
An excavation apparatus including a backhoe bucket having a novel ripper tooth assembly secured to a convex rear side of the backhoe bucket. The ripper tooth assembly includes a mounting base attached to the backhoe bucket. A pair of spaced, parallel, tooth-mounting lobes are secured to the opposite side of a base plate from the side thereof facing the backhoe bucket. These lobes are apertured to receive a pivot pin which pivotally supports an elongated ripper tooth. The ripper tooth has a detachable digging point on one end and an impact surface on the other end. The impact surface impacts against an impact pad mounted on the mounting base at a location such that when the tooth digs, the impact surface will bear against the impact pad, and the impact forces will be distributed into the mounting base, and from then, into the backhoe bucket.
REFERENCES:
patent: 3596996 (1971-08-01), Carter
patent: 4041624 (1977-08-01), Fryrear
patent: 4204348 (1980-05-01), Lydie
patent: 4327509 (1982-05-01), Bean
patent: 4531883 (1985-07-01), Arnold
patent: 4561199 (1985-12-01), Lockwood
patent: 4595240 (1986-06-01), Pettersson
patent: 4804309 (1989-02-01), Risch
patent: 5115583 (1992-05-01), Vail
McBee J. Russell
Taylor Dennis L.
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