Movable or removable closures – Sequential closures for passageway
Patent
1999-05-14
2000-06-20
Stodola, Daniel P.
Movable or removable closures
Sequential closures for passageway
109 6, E06B 700
Patent
active
060763035
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention refers to a filtering gate, designed to protect the access to a site whenever it is desired that the access controlling device does not degrade the transit rate and does not hamper the free circulation of physical disabled persons.
A number of filtering access devices are known, utilised to better save the environmental conditions of air conditioning inside the premises and to realise the electronic checking of the persons who pass through the access, by means of metal detectors.
Double door systems, central pivot revolving door systems for the access to public premises and the so-called "burglar-proof tambours", equipped with metal detectors, for the access to protected premises, typically banks, or to classified premises, are the most used among such devices.
In some of such devices, systems are provided that include separate corridors for a user who enters and for a user who goes out, in which corridors a box is located, closed by two vertically hinged doors, which usually cannot be opened both at the same time.
For example, in the case of banks, the entry box could be provided with metal detectors, suitable to prevent persons, who carry a weapon, from entering the protected site, so that anyone could enter the site only with the consent of such detectors.
More particularly, in such types of safety door systems, vertical cylindrical boxes are provided, in which the access members are in the form of glass walls, having the shape of sectors of a cylinder which, in the phases of opening and closing, are caused to slide along the fixed lateral cylindrical walls of the respective box, these walls being made from safety glass and having the shape of sectors of a cylinder as well.
BACKGROUND ART
In Italian patent N. 1,195,079, a system of boxes has been described, equipped with safety doors, suitable to allow the entry and the exit of one or more persons at the same time, particularly of a physical disabled person in a wheelchair as well. This system can be used in banks, postal agencies, supermarkets or other premises, which must be protected against robberies or the like, or simply from the atmospheric agents.
The central pivot revolving doors are often used in hotels, in the airports and, generally, in all the public premises, where problems of acoustic isolation or the like, exist. The central pivot revolving doors must be manually pushed: they force the user to walk in "short steps", in synchrony with their rotational movement. At last, they do not allow the passage of shopping carts, wheelchairs and bulky objects at all.
Therefore, an attempt, done with the purpose of, so to say, linearizing the rotational path of the central pivot revolving doors, consists of the device, already known, by means of which the leaves of a revolving door are made to travel a rectilinear path included between two 180.degree. rotations, so as to allow physical disabled persons to pass through.
Nevertheless, these kinds of access for disabled, not walking persons show many drawbacks. First of all, they usually show not rectilinear paths of the leaves, thereby involving complex mechanisms, and therefore expensive and onerous to service. This remark is also valid in the case of the device of the Italian patent N. 1,195,079, in which the leaves perform some rectilinear movements at right angles among them, so as to simulate a 360.degree. rotation every four 90.degree. movements.
Therefore, not only the cost, as already stated, but also the poor reliability and the operational slowness are direct consequence of the complexity of the movements and of the mechanisms which carry out them.
DISCLOSURE OF THE INVENTION
Therefore, the main object of the present invention is to provide a filtering gate with two reversible corridors for the entry or exit, in which the leaves of the doors move back and forth in one only direction with a linear motion, without interference between the paths made by the individual leaves.
Another object of the present invention is to provide a filtering gate of the
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patent: 5311166 (1994-05-01), Frye
patent: 5694867 (1997-12-01), Diaz-Lopez
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Cohen Curtis A.
Progetech S.r.l.
Stodola Daniel P.
LandOfFree
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