Title: Integral rippers for hydraulic excavator bucket

Abstract: An excavator bucket includes a pair of guide socket structures, each positioned inwardly of and adjacent a sidewall and the rear wall of the bucket. A pair of ripper shanks are included, one associated with each of the guide sockets, to be extended and retracted relative to the bucket. Each ripper shank may be selectively held in a retracted or an extended position relative to the bucket, and may be completely removed from the bucket if desired.

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Inventors: Fryrear, Max Dennis (Joliet, IL, US)

Application Number: 461608
Filing Date: 1974-04-17
Publication_date: 1977-08-16
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 37/404 299/67, 414/722
Other Classes:
US Patent Ref:

2783558	Mar, 1957	Morgan	37/117.
2840931	Jul, 1958	Appel	37/117.
2952929	Sep, 1960	Lindberg	37/117.
3038267	Jun, 1962	Helton et al.	172/777.
3039210	Jun, 1962	Slaughter	37/141.
3061123	Oct, 1962	Rogers	37/DIG.
3097439	Jul, 1963	Calkin	37/117.
3596996	Aug, 1971	Carter	299/67.
3702712	Nov, 1972	Cairns	299/67.
3778111	Dec, 1973	Ciofani	299/37.

Other Refs:
Primary Examiner: Crowder, Clifford D.
Assistant Examiner:
Attorney: Phillips, Moore, Weissenberger, Lempio & Majestic