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US 10,399,884 B2Granted
Bending device for shaping glass for use in aircraft transparencies
AssigneePPG Industries Ohio, Inc.
InventorsJohn E. DeAngelis, Yu Jiao, Dennis D. Warren, Chao Yu
Life of this patent
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Abstract
A glass sheet used in the making of an aircraft windshield is shaped using the “cut-to-size” method instead of the “out-after-bend” method. In a preferred aspect of the invention the “cut-to-size” method is practiced using a bending iron having a sheet shaping rail having a stationary shaping rail portion mounted on a support member and an articulating shaping rail portion pivotally mounted on the support member for movement from a non-shaping position to a shaping position.
Claims15
A sheet bending device comprising:
- a support member;
- a sheet shaping rail comprising a stationary shaping rail portion securely mounted on the support member and an articulating shaping rail portion pivotally mounted on the support member, wherein the articulating shaping rail shaping portion is pivotally mounted on the support member with one end of the articulating shaping rail portion adjacent a first end of the stationary shaping rail portion and an opposite end of the articulating shaping rail portion adjacent a second end of the stationary shaping rail portion;
- a force biasing member operatively connected to the articulating shaping rail portion to move the articulating shaping rail portion from a non-shaping position to a shaping position, and
- a retention member to limit movement of a sheet to be shaped relative to the stationary shaping rail portion wherein the retention member comprises at least one stop member having a cone shaped segment and a cylindrical shaped segment, wherein the cone shaped segment engages a peripheral edge of the sheet to be shaped when the sheet to be shaped is positioned on the stationary shaping rail portion, and the cylindrical shaped segment of the retaining member engages the peripheral edge of the sheet to be shaped to limit movement of the sheet to be shaped over the stationary shaping rail portion toward the retention member as the articulating shaping rail portion moves from the non-shaping position to the shaping position.
1 more element
Dependencies are inferred from the claim text.