Grinding tools for cylinders
AssigneeBesenbruch-Hofmann, Inc.
InventorAlex Besenbruch
Life of this patent
Estimating the term…
Abstract
A grinding tool for the inside of cylinder has a motor driven stem carrying a hub on which is a notched hub member detachably securing ends of three flexible legs. A shoe having a fixed grindstone is pivotally attached to each of the legs and is releasably held by a spring clip. A sleeve surrounds the hub member to help hold the legs in place. A nut secures the sleeve on the hub member. An annular flange is loosely fitted on the hub and is held by the nut to serve as a stationary hand grip while the remainder of the tool rotates.
Claims9
A grinding tool for a hollow cylinder having an end wall formed with a central hole, and a cylindrical inner wall to be ground, comprising:
- a stem assembly including a cylindrical hub at one end;
- a hub member surrounding said hub;
- a plurality of flexible legs each having one end engaged on said hub member and having blade portions extending radially outward of said hub member;
- a sleeve surrounding said hub member to hold said legs clamped on said hub member;
- and
- flange means loosely fitting around said hub to be manually gripped and held stationary when said stem assembly, said legs, and said sleeve rotate.
Dependencies are inferred from the claim text.