Flexible or portable closure – partition – or panel – With hood – canopy – shield storage chamber – or outrigged... – For plural strip – slat – or panel and/or pleating type
Patent
1983-05-26
1987-05-05
Britts, Ramon S.
Flexible or portable closure, partition, or panel
With hood, canopy, shield storage chamber, or outrigged...
For plural strip, slat, or panel and/or pleating type
160133, E06B 926
Patent
active
046624201
DESCRIPTION:
BRIEF SUMMARY
1. Technical Field
This invention relates to an uplifting type panel shutter mechanism for covering and uncovering the opening of a building, wherein panels constituting a shutter are arranged on the same plane so as to cover the opening when each of the panels is supported by guide rails uprightly placed on both edges of the opening, whereas the panels are rolled up so as to leave the opening uncovered, when each of the panels is housed side by side in a case linked with the upper ends of the guide rails.
2. Background Art
The most popular conventional uplifting type shutter mechanism comprises shutters, or a number of slats linked together in a manner that they are rotatable; a shaft for rolling up the shutters, the shaft being rotatably installed in the shutter housing provided on the upper edge of the opening of a building; and guide rails fixed on the left and right edges of the opening for guiding the shutters upwardly and downwardly. In that mechanism, the shutters are rolled up on the shaft to uncover the opening and, to cover the opening, the shutters are allowed to move downward by their own weight.
However, because the slats constituting a shutter are normally long steel strips linked together by means of members formed at their ends adjacent to each other in the vertical direction for engaging the slats in such a manner that the slat is allowed to turn by a preset angle, the disadvantage is that unpleasant sound is produced by sliding friction and collision between the slats and between the slats and the guide rails, the friction and collision being caused by the members which turn when the shutters are moved upward and downward.
For the above reason, a proposal has been made for providing an uplifting type shutter mechanism which can move a shutter upward and downward by causing each of the slats constituting the shutter to slide on another slat adjacent thereto in order to eliminate such unpleasant sound produced by the uplifting type shutter mechanism when the shutter is moved upward and downward. The disadvantage of this slide type shutter mechanism is that it requires a special mechanism for transferring and displacing the slats, the mechanism being composed of plate-like guide members provided at both ends of each slat, a doglegged link for linking the slats adjacent to each other through a pin in a slit made in the guide member in such a way that the slat is rotatable, and a press roller provided within the channel where the doglegged link moves so as to force the slats from the guide rails into a case for containing the shutter in the direction of rails attached to the case for the slats to hang on, in order to uncover the opening by making each slat slide on another slat adjacent thereto along the guide rails from the position where the slats have been arranged on the same plane to another position where they are vertically placed side by side along the rails attached to the above case for the slats to hang on, or to cover the opening by letting the slats slide down from the position where they have been vertically placed in parallel in the case for containing them to another position where they are arranged on the same plane along the guide rails, that is, in order to put up and down the shutter. Another disadvantage is originated from the very complicated construction of the mechanism for transferring and displacing the slats, which makes it difficult to smoothly operate the shutter upwardly and downwardly.
In addition, a lock with which the conventional slide type shutter is equipped is manually fastened by causing a latch fixed to one of the slats constituting the shutter to fall into and to be lifted from a catch attached to the guide rail, or electrically operated by a solenoid mechanism. Consequently, if it is forgotten to manually lock the shutter in the case of the former, capability of closing an opening as the essential function of a shutter will be lost, causing crime prevention ineffective. In the case of the latter, since a special device such as a solenoid must be instal
REFERENCES:
patent: 405450 (1889-06-01), Wilson
patent: 2586561 (1952-02-01), Poggi
patent: 2729287 (1956-01-01), Goldner
patent: 2897886 (1959-08-01), Pistelli
patent: 3732913 (1973-05-01), Wrono
Britts Ramon S.
Philpitt Fred
Purol David M.
Sanwa Shutter Corporation
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