Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1990-07-26
1992-05-12
Reese, Randolph A.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
37DIG3, 37DIG12, 414739, 414722, E02F 376
Patent
active
051116022
ABSTRACT:
An improved backhoe clamping device is provided which is designed to be easily added onto standard existing backhoe equipment, and which allows full range of curl for the bucket through effectively hollow webbing between clamp arms. The device includes bucket links having integral mounting brackets, onto which clamp links are pivotally and substantially permanently attached, thereby offsetting their pivot points from the bucket links, and preventing loss of clamp links and removable pins. Clamp arms are pivotally attached to the clamp links by a single pin, this single pin also being used to secure the device in a storage position, preventing loss or misplacement of this pin. Clamp arms are also pivotally attached to the backhoe dipper arm. In this way, the existing backhoe leverage actuates the clamp arms, causing them to move in conjunction with the bucket to achieve a clamping effect. The webbing between clamp arms includes clamp link guides and clamp arm gussets, thus producing an advantageous meshing of the various parts and ensuring structural soundness.
REFERENCES:
patent: 3061123 (1962-10-01), Rogers
patent: 4283866 (1981-08-01), Ogawa
patent: 4285628 (1981-08-01), Jankowski
patent: 4375345 (1983-03-01), Hanson
patent: 4466494 (1984-10-01), Hanson
patent: 4519739 (1985-05-01), Risch
patent: 4804309 (1989-02-01), Risch
patent: 4932832 (1990-06-01), McCasland et al.
Reese Randolph A.
Warnick Spencer
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