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US 11,142,884 B1Granted
Excavator scraper attachment
OwnerMichael D. Ramuninventor
Life of this patent
Estimating the term…
Abstract
A scraper attachment for excavators for removing synthetic coatings on cylindrical surface object and the like. The scraper attachment has fixed and movable jaws with opposing scraper blades to grasp, hold and scrape an applied bonded coating from the object by oppositional fixed and movable action of the scraper blades in repetitive engagement.
Claims1
A scraper plate attachment for a power boom of an excavator for removing coatings from cylinder surface objects comprises,
- an elongated fixed jaw and an elongated movable jaw extending from said power boom,
- respective scraper plates comprising a scraper plate on a free end of each of said respective jaws, each of said respective scraper plates extending continuously over and beyond the free ends of said respective jaws for integrated continuous surface contact with the cylinder surface objects,
- movable linkage elements extending from said elongated movable jaw to said power boom and a fixed linkage element extending from said elongated fixed jaw to said power boom,
- a hydraulic piston and cylinder unit on said power boom,
- a piston rod end bearing in communication with said movable linkage elements on said elongated movable jaw,
- said respective scraper plates extending from said free ends of said respective jaws in arcuate spaced oppositional alignment to one another,
- wherein said elongated fixed jaw and said elongated movable jaw comprise a plurality of spaced elongated parallel aligned apertured support plates secured to said fixed linkage element and said movable linkage elements respectively by bearing pins and spacers therebetween said support plates and extending at right angles from said respective scraper plates secured to respective free ends of said support plates,
- wherein said respective scraper plates are pivotally secured to said respective free ends of said support plates of said respective jaws by multiple upstanding aligned apertured pivot engagement tabs on said respective scraper plates and aligned apertures in said support plates by pivot pins therethrough, and
- wherein said respective scraper plates have respective upstanding pairs of engagement apertured tabs and adjustment arms pivotally secured to said respective engagement apertured tabs and to aligned engagement apertured tabs on said support plates for independent angular repositioning of said respective scraper plates to said free ends of said respective jaws.
6 more elements
Dependencies are inferred from the claim text.