Collapsible security grill, grille system, bar, and method
AssigneeStackdoor B.V.
InventorTammo SCHUT
Life of this patent
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Abstract
The invention relates to a collapsible security grille. The grille comprises a multiplicity of successive bars that can be substantially stacked in a retracted state of the grille and can be substantially spaced apart with respect to each other in an extended state of the grille. At least a number of the bars comprises one or multiple parts formed from bent sheet metal. Advantageously, each of at least a number of the bars can be put together from at least a first part formed from a first blank of sheet metal and a second part formed from a second blank of sheet metal. In particular, at least the first part can be a bent profile. Additionally or alternatively, at least the second part can be a bent profile.
Claims15
A collapsible security grille, comprising a multiplicity of successive bars that can be substantially stacked in a retracted state of the grille and can be substantially spaced apart with respect to each other in an extended state of the grille, wherein at least a number of the bars comprises one or multiple parts formed from bent sheet metal.
A bar for a collapsible security grille, comprising one or multiple parts formed from bent sheet metal, said bar composed from at least a first part formed from a first blank of sheet metal and a second part formed from a second blank of sheet metal, and wherein the first part and/or second part has a bent profile.
A method for producing a bar for a collapsible security grille and/or for producing a collapsible security grille, comprising the steps of:
- providing a first bar part from sheet metal;
- providing a second bar part from sheet metal;
- and
- assembling a bar from at least said first bar part and said second bar part by sliding he second bar part at least partly into the first bar part in the longitudinal direction of the first bar part.
Dependencies are inferred from the claim text.