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US 4,146,812 AGranted
Motor vehicle headlight having filling hole sealed with non-rigid material
AssigneeGTE Sylvania Incorporated
InventorPeter R. Gagnon
Life of this patent
Estimating the term…
Abstract
A motor vehicle headlight comprises a curved reflector having a lens bonded to the front thereof. A tungsten-halogen capsule is disposed within the reflector. A filling hole extends through the rear of the reflector, the hole being hermetically sealed by means of a nonrigid sealing material.
Claims7
A motor vehicle headlight comprising:
- an envelope having a curved reflector at the rear thereof, and having a tungsten-halogen capsule disposed therein;
- a filling hole extending through the rear of the reflector, the filling hole being hermetically sealed by means of a nonrigid sealing material in the hole.
The method of making a motor vehicle headlight comprising the steps of:
- providing a reflector envelope containing a tungsten-halogen capsule and having a filling hole through the rear of the reflector;
- evacuating the envelope through the filling hole and filling the envelope with a dry gas to about atmospheric pressure;
- and sealing the filling hole with a nonrigid sealing material.
Dependencies are inferred from the claim text.