US2020391351A1PendingUtilityA1

Annular grindstone

36
Assignee: DISCO CORPPriority: Jun 11, 2019Filed: Jun 3, 2020Published: Dec 17, 2020
Est. expiryJun 11, 2039(~12.9 yrs left)· nominal 20-yr term from priority
Inventors:Hiroki Aikawa
B28D 1/24B24D 5/12B28D 5/022B24D 18/0018B24D 5/16
36
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Claims

Abstract

An annular grindstone includes a grindstone section that includes a binder and abrasive grains dispersed and fixed in the binder, in which the binder includes a tin-nickel alloy. Preferably, a content of tin in the tin-nickel alloy is equal to or more than 57 wt % and less than 75 wt %. In addition, preferably, the annular grindstone consists of the grindstone section. Alternatively, the annular grindstone further includes an annular base having a grip section, and the grindstone section is exposed to an outer peripheral edge of the annular base.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An annular grindstone comprising:
 a grindstone section that includes a binder and abrasive grains dispersed and fixed in the binder, wherein   the binder includes a tin-nickel alloy.   
     
     
         2 . The annular grindstone according to  claim 1 , wherein
 a content of tin in the tin-nickel alloy is equal to or more than 57 wt % and less than 75 wt %.   
     
     
         3 . The annular grindstone according to  claim 1 ,
 consisting of the grindstone section.   
     
     
         4 . The annular grindstone according to  claim 1 , further comprising:
 an annular base having a grip section, wherein   the grindstone section is exposed to an outer peripheral edge of the annular base.

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