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US 4,394,715 AGranted
Protective device for a ground-deposited light
AssigneeTatis Plasttatnigar AB
InventorAnders Dahlberg
Life of this patent
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Abstract
A protective device for a ground-deposited light is disclosed. Such a light, e.g. a guide-light for airfield use, generally includes a housing (2) having a cover (3) provided with an opening (5) for letting out light rays from a lamp (4) within the housing. To protect the lamp from rain, snow and dirt the opening is sealed by a translucent material. To protect the translucent material from mechanical influence grains of a harder material than the translucent material are partly embedded therein.
Claims20
A protective device for a ground-deposited light comprising:
- a housing;
- a light source located in said housing, said housing having at least one opening therein for letting light out of said housing;
- transparent sealing materials for sealing said opening;
- and,
- granular particles that are harder than said transparent sealing material, said granular particles being partly embedded in said transparent sealing material and partly protruding above the surface thereof for protecting said transparent sealing material against abrasion.
2 more elements
Dependencies are inferred from the claim text.