Disclosed is a step assembly for use in climbing a utility structure. The step assembly comprises a rod member and a plate member. The rod member comprises a generally L-shaped rod, a shoulder formed contiguously to the generally L-shaped rod, and an arm pivotably coupled to the shoulder by a pin. The plate member comprises a duct having a longitudinally formed internal passage, and a support plate attached at one end portion of the duct and formed transversally to the duct, wherein the internal passage of the duct contiguously provides an opening in the support plate at the one end portion. The aligned shoulder and arm are configured to pass through the internal passage.

A pole step apparatus for fiberglass utility poles can have a supporting body is disclosed, having a bended portion with a brace on the supporting body; a grip surface distal to the bended portion; a nut on a threaded portion of the supporting body to tighten the brace toward the bended portion via the threaded portion of the supporting body; a passthrough in the brace formed can accommodate a supporting body and resists rotation; the bended portion is formed on the supporting body at a 90-degree angle; an arc is formed on the brace adjacent to the bended portion; and the brace resists rotation via a non-cylindrical, anti-rotational portion of the supporting body.

An apparatus includes a ladder assembly configured to be used with a vertically-extending wall assembly of a building having a window assembly installed to the vertically-extending wall assembly. The ladder assembly includes a housing assembly configured to be fixedly received (at least in part) in the vertically-extending wall assembly, to be mounted to the vertically-extending wall assembly, and to extend (at least in part) into the vertically-extending wall assembly of the building. A support assembly is configured to be fixedly attached to the housing assembly, and to extend (at least in part) into the housing assembly in such a way that the support assembly bisects the housing assembly. The support assembly, in use, provides any one of a handhold and a foothold configured for usage by a user.

Some implementations can include step pegs having safety locks.

A building having a security and safety function of the present invention may include: a house body that is configured to include an inner panel that defines an interior space, an outer panel that surrounds the inner panel to be spaced a predetermined distance from the outer surface of the inner panel, a heat insulating material that is installed between the inner panel and the outer panel, and an air flow passage that is formed between the inner panel and the outer panel to facilitate a fluid flow therebetween and to block the heat transfer with respect to the outside; an indoor entrance door configured to be installed on one side of the house body for entering the interior space; and an outdoor entrance door configured to be installed on the house body in front of the indoor entrance door. The building can control the entry of children or outsides into the rooftop of the building without permission from the user in order to thereby prevent safety accidents and in order to thereby improve a security function.

A building having a security and safety function of the present invention may include: a house body that is configured to include an inner panel that defines an interior space, an outer panel that surrounds the inner panel to be spaced a predetermined distance from the outer surface of the inner panel, a heat insulating material that is installed between the inner panel and the outer panel, and an air flow passage that is formed between the inner panel and the outer panel to facilitate a fluid flow therebetween and to block the heat transfer with respect to the outside; an indoor entrance door configured to be installed on one side of the house body for entering the interior space; and an outdoor entrance door configured to be installed on the house body in front of the indoor entrance door. The building can control the entry of children or outsides into the rooftop of the building without permission from the user in order to thereby prevent safety accidents and in order to thereby improve a security function.

Disclosed is a step assembly with fall arrest capability for use in climbing a utility structure, including a removable step unit. The step assembly comprises the step unit including two leg members, a leg holder including two cylinders, and an expansion anchor including multiple fins. The combination of the leg holder and the expansion anchor is configured to be secured with the utility structure based on bending the fins at the shoulder sections to have the fins opened inside the utility structure while the leg holder is in contact with and outside the utility structure. The step unit can be detachably attached to the secured combination by inserting the two leg members through the two cylinders of the leg holder, respectively.

A building having a security and safety function of the present invention may include: a house body that is configured to include an inner panel that defines an interior space, an outer panel that surrounds the inner panel to be spaced a predetermined distance from the outer surface of the inner panel, a heat insulating material that is installed between the inner panel and the outer panel, and an air flow passage that is formed between the inner panel and the outer panel to facilitate a fluid flow therebetween and to block the heat transfer with respect to the outside; an indoor entrance door configured to be installed on one side of the house body for entering the interior space; and an outdoor entrance door configured to be installed on the house body in front of the indoor entrance door.

The building can control the entry of children or outsides into the rooftop of the building without permission from the user in order to thereby prevent safety accidents and in order to thereby improve a security function.

A building having a security and safety function of the present invention may include: a house body that is configured to include an inner panel that defines an interior space, an outer panel that surrounds the inner panel to be spaced a predetermined distance from the outer surface of the inner panel, a heat insulating material that is installed between the inner panel and the outer panel, and an air flow passage that is formed between the inner panel and the outer panel to facilitate a fluid flow therebetween and to block the heat transfer with respect to the outside; an indoor entrance door configured to be installed on one side of the house body for entering the interior space; and an outdoor entrance door configured to be installed on the house body in front of the indoor entrance door.

The building can control the entry of children or outsides into the rooftop of the building without permission from the user in order to thereby prevent safety accidents and in order to thereby improve a security function.

The present invention is an improved footstep for an aircraft galley or similar monument that is retractable into the galley when not in use. The overall size of the footstep is significantly reduced by the use of a spring loaded detent mechanism. The present invention is designed to allow the footstep to remain in the deployed, horizontal position by means of a spring and plunger that cooperate to create a detent or over-center position. Further, the present invention permits the footstep to automatically return to the stowed position by virtue of the spring and plunger detent system.