Upwardly openable door

Details Upwardly openable door Upwardly openable door

1978-05-01

1980-03-25

Kannan, Philip C.

Flexible or portable closure, partition, or panel

Pleating type

A47H 500

Patent

active

041945492

ABSTRACT:
A collapsible door apparatus for industrial buildings and other installations where a high degree of utilization of the space inside of the door and large door openings are required, for example, for chamber driers. The door is characterized by a door member suspended at a section which is adapted to be attached to the upper limit surface of the door opening and comprises means for raising and lowering the door member by means of at least one wire rope attached to the lower part of the door member. The door member comprises at least one sheet of flexible material and a plurality of stiff cross-members spaced relative to each other and connected with the sheet of flexible material. The cross-members extend transversely of the door member and are guided at their ends in vertical guide bars attached to the vertical limit surfaces of the door openings. The wire rope extends through the cross-members and to the lowermost cross-member where it is attached thereto.

REFERENCES:
patent: 1937342 (1933-11-01), Higbie
patent: 2834411 (1958-05-01), Clements
patent: 2839135 (1958-06-01), Anderson
patent: 3016951 (1962-01-01), Greene
patent: 3126049 (1964-03-01), Hollands
patent: 3321003 (1967-05-01), Boerner
patent: 3487875 (1970-01-01), Shukat et al.
patent: 3777800 (1973-12-01), Susoev

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