Static structures (e.g. – buildings) – Cover with surface water receiver at eave or valley – Between oppositely sloping sections
Patent
1980-05-19
1982-01-26
Murtagh, John E.
Static structures (e.g., buildings)
Cover with surface water receiver at eave or valley
Between oppositely sloping sections
52 18, 52 52, 52 66, A01G 924, E04B 716
Patent
active
043121578
ABSTRACT:
A greenhouse structure is formed with a substantially flat and horizontal roof formed of a plurality of roof sections each pivoted about a pivot or hinge end to swing upwardly from a closed position to an open position to admit ambient air to flow into or from the interior of the structure to cool the same. The roof sections are lifted by a lift means which becomes part of the roof supporting structure, and, to this end, the lift means is associated with the vertical support columns. Preferrably, the lift means comprises elongated straight lift members each carried by and stabilized by an associated support column for traveling along vertical and rectilinear paths of travel. The preferred means for shifting the lift members and thereby the roof sections comprises a rotatable nut in threaded engagement with the lift member to shift the same vertically as the nut is turned by a worm gear means. The nut and worm gear means are journaled for rotation in integral portions of a plastic housing which is mounted on the support column. A single motor drives a common shaft means which extends to each worm gear means to drive all of the nuts and lift members simultaneously. An internal row of support columns carries a gutter means as well as brackets for supporting hinge pins for hingedly mounting roof sections.
REFERENCES:
patent: 2280729 (1942-04-01), Sutton
patent: 2687102 (1954-08-01), Rongved
patent: 3411819 (1968-11-01), Tyree
patent: 3572811 (1971-03-01), Kasten
Chapman Rick J.
Hertel Roger D.
IBG International, Inc.
Murtagh John E.
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