Title:
SPIRAL STAIRCASE AND CONNECTING METALS FOR THE SPIRAL STAIRCASE
Document Type and Number:
WIPO Patent Application WO/1997/019237
Kind Code:
A1
Abstract:
A spiral staircase which includes a shaft pole for the staircase, a plurality of arms spirally connected to the outer periphery of the shaft pole, a tread fixed to the upper surface of each arm, a plurality of balusters fixed to the outside end portion of a plurality of arms in parallel with the shaft pole, and a plurality of handrails mounted and connected between the balusters pillers, and wherein each of the arms is connected to the shaft pole by arm connecting metals, each baluster is connected to each arm by baluster connecting metals, and the balusters and the handrails are connected by handrail connecting metals. Since the connecting metals are used for the connection between the shaft pole and the arms, between the arms and the balusters and between the balusters and the handrails, connection and assembly of the spiral staircase can be carried out easily, reliably and firmly without requiring skilled labor, and the cost of the production and high operation efficiency can be accomplished.
Inventors:
INAFUKU NOUZEN (JP)
Application Number:
PCT/JP1996/003435
Publication Date:
May 29, 1997
Filing Date:
November 22, 1996
Export Citation:
Assignee:
INAFUKU CONSTRUCTION CO LTD (JP)
INAFUKU NOUZEN (JP)
INAFUKU NOUZEN (JP)
International Classes:
E04F11/032; E04F11/18; (IPC1-7): E04F11/02
Foreign References:
| JPS5893123U | 1983-06-24 | |||
| JPS54139222A | 1979-10-29 | |||
| JPS62175133U | 1987-11-07 | |||
| JPH01154718U | 1989-10-24 | |||
| JPS50154623U | 1975-12-22 | |||
| JPS5255029U | 1977-04-20 | |||
| JPS53151215U | 1978-11-28 |
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