An article storage facility includes an elevating scaffold capable of ascending/descending in a movement space across a withdrawal height that is set on an upper side and a plurality of working heights that are set in intermediate locations in the movement space in the vertical direction. A plurality of support bodies that support the elevating scaffold are provided in the vertical direction so as to respectively correspond to the plurality of working heights, and at least a support body other than the lowermost support body of the plurality of support bodies is configured to be movable to an acting position at which the support body protrudes toward the movement space so as to support the elevating scaffold and a withdrawal position at which the support body retracts toward the article storage shelf so as not to come into contact with the elevating scaffold moving up and down.

Folding fire-escape ladder.

Article Storage Facility

An extensible step assembly having steps secured to sections of extensible or telescoping arms whereby the assembly can be moved from a retracted compact position to an extended position for use.

Extensible step assembly

A marine vessel ladder system that is primarily used for overboard emergency situations. The ladder system is collapsible and separable into two pieces with one piece substantially smaller than the other. The smaller piece serves both as a retainer to hold the larger piece in a folded, stowed position and also as a connector to fasten the larger piece to a customized area along an edge of the vessel's deck. The ladder system is deployable by one deckhand and includes vertically oriented upper and lower ladder sections with a horizontally oriented grate section therebetween. Fixed vertical railings and collapsible side railings are provided for assistance in ascending and descending the ladder system. Optional safety straps are provided to secure the system prior to and during use.

Marine vessel overboard emergency system

A collapsible platform assembly for an extension ladder is disclosed that can be used to support the top of an extension ladder with respect to a roof. The collapsible platform assembly includes a platform that is rotatably connected to a rung of an extension ladder near the top. In a storage or retracted position, the platform is generally co-planar with the ladder; i.e fits between the side rails of the extension ladder. In a use position, the platform can be extended and directly supported by the roof, either flat against a roof or alternatively at an acute angle relative to the roof. Since the platform is configured to be directly supported by the roof, the platform acts as a rigid support for the top of the ladder which does not deflect under load as there is an even weight transfer from the ladder to the platform in use. In accordance with an important aspect of the invention, an upper portion of the side rails act as “grab rails” when the platform is in an extended position, allowing the user to hold on and walk through the top of the ladder and onto the platform when the collapsible platform assembly is in an extended position. In one embodiment of the invention, one or more retractable hand rails are provided for added safety for use when the user moves onto the platform.

Collapsible platform assembly for a ladder

A platform in combination with ladder-like rails combine to form an add-on device that is connected to a rung near the top of an extension ladder so that the platform is rotatably connected to the extension ladder and the ladder-like rails. In a storage or retracted position, the add-on device is generally co-planar with the extension ladder; and in a use position, the platform can be extended from the extension ladder and directly supported by a roof. The platform acts as a rigid support for the top of the ladder and does not deflect under load. The ladder-like rails act as “grab rails” so that a user can “grab” or hold on to them while walking through the top of the extension ladder. Also, one or more retractable hand rails provide added safety when the user moves onto the platform.

Folding fire-escape ladder.

Citations

Article Storage Facility

Extensible step assembly

Marine vessel overboard emergency system

Collapsible platform assembly for a ladder

Collabsible platform assembly for an extension ladder

Related Papers (5)

Folding step ladder

Folding extension ladder

Joint for folding ladder

Folding ladder for carrier

Folding scaling-ladder.