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.

A collapsible gate may provide a temporary barrier to prevent movement between rooms, or to prevent access to a staircase, in a home or commercial building. The collapsible gate may be secured to framing material within a wall and adapted for storage within a wall cavity, such as a pocket door frame, when not in use. The collapsible gate may be vertically retractable and adapted to fit between two framing studs to stow within a wall cavity and out of sight. The collapsible gate may include a counterbalance to maintain the gate within the wall cavity when the gate is in the fully open position, and to assist in opening the gate when the gate is lifted from a closed position.

A collapsible gate may provide a temporary barrier to prevent movement between rooms, or to prevent access to a staircase, in a home or commercial building. A pre-framed collapsible gate may be secured to and supported by a framing system for installation within a wall, wherein the collapsible gate is adapted for storage within the framing system when not in use. The pre-framed collapsible gate may be vertically retractable and adapted to stow within a framing system installed within a wall and out of sight. The collapsible gate may include a counterbalance to maintain the gate within the framing system when the gate is in the fully open position, and to assist in opening the gate when the gate is lifted from a closed position.

A collapsible gate may provide a temporary barrier to prevent movement between rooms, or to prevent access to a staircase, in a home or commercial building. The collapsible gate may be secured to framing material within a wall and adapted for storage within a wall cavity, such as a pocket door frame, when not in use. The collapsible gate may be vertically retractable and adapted to fit between two framing studs to stow within a wall cavity and out of sight. The collapsible gate may include a counterbalance to maintain the gate within the wall cavity when the gate is in the fully open position, and to assist in opening the gate when the gate is lifted from a closed position.

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.

An automatic water retaining device comprises two or more automatic water retaining units disposed in parallel, the automatic water retaining unit comprises a panel and a base, wherein the base is provided with a water storage cavity, the panel is rotatably disposed on the base, the water storage cavity is opened and closed through the rotation of the panel, a surface of the panel for covering the base is provided with a floating plate, one end of the base different from the end of the base connected with the panel is provided with a first water inlet communicated with the water storage cavity, and when water enters the water storage cavity from the first water inlet and contacts the floating plate, buoyancy is generated to the floating plate and the floating plate drives the panel to rotate and open under the action of buoyancy.

An automatic auto-sensing flood protection roller shutter with auto-locating reinforced column includes a door plate composed of a plurality of door panels, at least one reinforced column automatically movable by a motor to a reinforcing position behind the door plate when the door plate is lowered upon sensing a flood, and a bolt and bolt driving device for securing the at least one reinforced column in the reinforcing position.

A folding hanger includes a hook extending from an upper end of a hinge pin for suspending the pin. First and second hanger arms each have proximal and distal ends and define a support surface therebetween. Each proximal end has a stop. A knuckle having a hole extends from each proximal end. The pin passes through the holes along an axis, coupling the arms and hook whereby the arms are movable between extended and folded configurations. The stops abut when the arms are extended, and are separated when folded. The hanger has a center of gravity when the arms are extended and suspended by the hook such that the axis is angled relative to vertical in a first direction and the stops bias abutting. The arms each have a center of gravity such that angular movement of the axis past an unstable equilibrium causes the arms to move toward folded.

An automatic water retaining device comprises two or more automatic water retaining units disposed in parallel, the automatic water retaining unit comprises a panel and a base, wherein the base is provided with a water storage cavity, the panel is rotatably disposed on the base, the water storage cavity is opened and closed through the rotation of the panel, a surface of the panel for covering the base is provided with a floating plate, one end of the base different from the end of the base connected with the panel is provided with a first water inlet communicated with the water storage cavity, and when water enters the water storage cavity from the first water inlet and contacts the floating plate, buoyancy is generated to the floating plate and the floating plate drives the panel to rotate and open under the action of buoyancy.

The invention relates to a security grille system (1) for securing a passage at least partly. The security grille (2) is arranged to be brought from an extended state, in which the grille (2) can block the passage at least partly, into a retracted state, in which at least a part of the previously blocked part of the passage is unblocked. The security grille (2) comprises a multiplicity of bars (4), preferably substantially horizontally extending bars (4), connected by means of multiple elongated connecting elements for interconnecting respective bars (4). The security grille system (1) further comprises a chain connected to the grille (2), preferably a chain being flexible in only one dimension and/or being roller chain, and at least one chain limiting (28) member for at least locally limiting movement of the chain (19), e.g. in a direction in which it is flexible, such as to counteract that one or more links of the chain can be substantially moved away from a regular route along which the links move when the grille (2) is moved from its extended state to its retracted state or vice versa.