US2018127300A1PendingUtilityA1

Method and apparatus for large feature creation in glass and glass-ceramic articles

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Assignee: CORNING INCPriority: Nov 26, 2013Filed: Jan 10, 2018Published: May 10, 2018
Est. expiryNov 26, 2033(~7.3 yrs left)· nominal 20-yr term from priority
Inventors:L. Urdenis JohnsonMichael Albert Joseph, IiMatthew John TownerKevin William Uhlig
Y10T225/12C03B 33/03B65G 2201/022B65G 49/065C03B 33/033C03B 33/04Y10T225/325Y10T225/298
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Claims

Abstract

A method for forming a hole in a glass or glass-ceramic sheets includes scoring a major surface of a glass or glass-ceramic sheet to define the hole, placing the sheet on receiving surface of a mount where a cavity is formed in the receiving surface such that a peripheral edge of the cavity is positioned external to the area bounded by the first score, and fracturing the sheet along the first score to break away the portion of the sheet defined by the first score, wherein the broken away portion of the sheet is contained within the cavity.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . A method for forming a hole in a glass or glass-ceramic sheet, comprising:
 making a first score in a major surface of the glass or glass-ceramic sheet, the first score defining the hole;   placing the sheet on a receiving surface of a mount having a cavity formed in the receiving surface, a peripheral edge of the cavity positioned external to the area bounded by the first score; and   fracturing the glass or glass-ceramic along the first score to break away the portion of the sheet defined by the first score, wherein the broken away portion is contained within the cavity.   
     
     
         2 . The method according to  claim 1 , wherein the sheet is placed with the first scored surface opposite to the receiving surface. 
     
     
         3 . The method according to  claim 1 , further comprising making a second score in a major surface of the sheet opposite to the first score. 
     
     
         4 . The method according to  claim 1 , wherein the sheet is fractured only along the first score. 
     
     
         5 . The method according to  claim 1 , comprising applying a temperature gradient to the sheet across the first score. 
     
     
         6 . The method according to  claim 1 , wherein the sheet is secured to the receiving surface. 
     
     
         7 . The method according to  claim 1 , wherein placing the sheet on the receiving surface comprises contacting the sheet with a compressible member disposed within the cavity. 
     
     
         8 . The method according to  claim 9 , wherein a peripheral edge of the compressible member is positioned external to the area bounded by the first score. 
     
     
         9 . The method according to  claim 1 , wherein the first score is a closed score. 
     
     
         10 . The method according to  claim 1 , wherein the first score is an open score.

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