Method of forming a hole in a glass reflector
AssigneeIndustrial Gasket, Inc.
InventorsRoger West, Brion Ponnay
Life of this patent
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Abstract
A method for cutting a glass reflector and a glass reflector produced by a cutting process. The method typically includes forming a fluid jet by ejecting a mixture of fluid and abrasive at an initial pressure, creating a pierce hole in the glass reflector with the fluid jet at the initial pressure, and cutting a ventilation hole in the glass reflector by moving the fluid jet from the pierce hole along a cutting path. The method may also include, after cutting the pierce hole and before cutting the ventilation hole, raising the pressure of the fluid jet from the initial pressure to an increased pressure.
Claims28
A method for cutting a glass reflector, the method comprising:
- forming a fluid jet by ejecting a mixture of fluid and abrasive at an initial pressure between about 3,000 and 7,000 psi;
- creating a pierce hole in the glass reflector with the fluid jet at the initial pressure;
- and
- cutting a ventilation hole in the glass reflector by moving the fluid jet from the pierce hole along a cutting path.
A glass reflector for a bulb assembly, the glass reflector being formed by a process comprising:
- forming a fluid jet by ejecting a mixture of fluid and abrasive at an initial pressure between about 3,000 and 7,000 psi;
- cutting a first hole in the glass reflector with the fluid jet at the initial pressure;
- raising the pressure of the fluid jet from the initial pressure to an increased pressure;
- and
- cutting a second hole in the glass reflector by moving the fluid jet from the first hole along a circuitous cutting path.
A method of forming a ventilation hole in a glass reflector, comprising:
- molding a depression into a wall of the glass reflector, the depression including a bottom, and a perimeter having opposed edge portions;
- molding a bridge portion between the opposed edge portions, adjacent the bottom of the depression;
- and
- removing the bridge portion to form the ventilation hole in the glass reflector.
Dependencies are inferred from the claim text.