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US 4,457,113 AGranted
Protected super-abrasive grinding tool
AssigneeSuper-Cut, Inc.
InventorHarold C. Miller
Life of this patent
Estimating the term…
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AssigneeSuper-Cut, Inc.
InventorHarold C. Miller
Estimating the term…
This improved rotary-type, super-abrasive grinding tool is designed to cope with a longstanding problem heretofore encountered when subjecting such tools to periodic dressing operations. The improved tool comprises an annular hub having a periphery or rim with a generally U-shaped slot therein, and a generally annularly-configured super-abrasive matrix supported in said slot and having an outer peripheral, configured working surface. The axially opposed walls of the slot buttress and support the sides of the super-abrasive matrix. Each of the walls have a plurality of peripherally-exposed, radially-disposed recesses therein containing a super-abrasive medium, preferably having the same composition and integral with the super-abrasive matrix. The exposed periphery of the super-abrasive medium protects peripherally-aligned portions of the rim from excessive wear when improperly contacted with the dressing medium.
In a rotary grinding tool comprising a generally annularly-configured super-abrasive matrix having an outer peripheral, configured working surface and a relatively-wear-prone, concentrically-disposed support structure therefor with continuous radial marginal portions laterally abutting and supporting marginal side portions of the super-abrasive matrix continuously around the periphery thereof, the improvement wherein said support structure has at least one peripherally-exposed recess in said continuous radial marginal portions contiguous with said super-abrasive matrix and having imbedded in said recess a peripherally-exposed super-abrasive medium.
A protected rotary grinding tool comprising:
A protected super-abrasive grinding tool comprising:
Dependencies are inferred from the claim text.