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US 3,958,294 AGranted
Rotary scraper
AssigneeThe Thompson Tool Co., Inc.
InventorDavid E. Thompson
Life of this patent
Estimating the term…
Abstract
A rotary scraper with fingers striking the work surface at a lagging angle, thus removing material by impact rather than by a scraping action. By way of an example, a wire brush with pivoted fingers that are restrained and unable to fully centrifugally extend radially.
Claims3
A rotary scraper comprising
- a. a hub
- b. a plurality of elastically flexible fingers pivotably attached to the hub extending outwardly therefrom
- c. restraining means fixed to the hub and located adjacent said pivotably attached fingers in a direction opposite to the direction of rotation, said restraining means including means integral with said fingers and resting on said restraining means for preventing a true radial extension of the fingers from the hub
- wherein a rotation of the hub about its central axis proximate to a work surface causes the outward tips of the fingers to flexibly impinge the work surface at a point substantially removed from the projection of the hub axis onto the work surface.
1 more element
Dependencies are inferred from the claim text.