Protective shields
AssigneeEa Safety, LLC
InventorTimothy David Nickodemus
Life of this patent
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Abstract
Protective shields configured to prevent projection against projectiles, such as during excavating and/or mining operations, are provided. The protective shields include a base layer comprising one or more transparent polycarbonate layers, a sacrificial polycarbonate layer comprising a transparent polycarbonate, and an air gap positioned directly between at least a portion of the base layer and the sacrificial polycarbonate layer. The sacrificial polycarbonate layer is directly or indirectly attached to the base layer in a manner to provide the air gap positioned between the base layer and the sacrificial polycarbonate layer.
Claims27
A protective shield, comprising:
- a first polycarbonate layer having a first surface coating and defining a first frit area in which the first surface coating is absent;
- a sacrificial polycarbonate layer having a second surface coating and defining a second frit area in which the second surface coating is absent;
- and
- wherein the first frit area of the first polycarbonate layer is secured to the second frit area of the sacrificial polycarbonate layer such that an air gap is defined between the first polycarbonate layer and the second polycarbonate layer when so secured.
A method of forming a protective shield, comprising:
- providing a first polycarbonate layer having a first surface coating and defining a first frit area in which the first surface coating is absent;
- providing a sacrificial polycarbonate layer having a second surface coating and defining a second frit area in which the second surface coating is absent;
- attaching the first polycarbonate layer to the sacrificial layer via the first frit area and the second frit area to define an air gap between the first polycarbonate layer and the sacrificial polycarbonate layer.
Dependencies are inferred from the claim text.