Movable or removable closures – Plural wings radiate from common pivot; i.e. – revolving – Successive position-type; e.g. – turnstile
Reexamination Certificate
1999-06-15
2001-01-09
Chin-Shue, Alvin (Department: 3634)
Movable or removable closures
Plural wings radiate from common pivot; i.e., revolving
Successive position-type; e.g., turnstile
C049S047000
Reexamination Certificate
active
06170194
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns a turning blocking device for a passageway, with a blocking element rotatable by a drive and having a barrier arm blocking the passageway in a blocking position, and with a sensor element arranged behind the blocking position, whereby the blocking element, especially after checking the right of entry of a passing user, first opens the passage to the sensor element, and second, after detection of the passing user by the sensor element, turns further into the next blocking position.
2. Description of the Prior Art
Such a turnstile can be inferred from WO-A 94/25720, for example. There, after the right of entry has been checked, the drive motor is started and the barrier arm is moved over a small angle of about 10° into a stop position in which an electro-optical sensor is released. When the user has indicated his readiness to pass through by having moved into the detection range of the sensor, the driving motor is started again by means of the sensor and the blocking element is rotated until the next barrier arm is in the blocking position.
Conventional turnstiles have four or three barrier arms, turnstiles comprising three arms having a driving shaft inclined by about 45° for space-saving reasons. Hence, in the passing direction the space available to the user is small and short since the turnstile forms functionally a moving lock chamber having a front and a rear limitation. Passing through the turnstile may cause difficulties, particularly if the user carries articles, such as sports goods, bags etc. It currently occurs that the users themselves, in particular the articles they carry, get stuck between the barrier arms.
SUMMARY OF THE INVENTION
The task of the invention is to eliminate the above-mentioned disadvantages and to increase the convenience of passage, especially for users carrying articles.
In a first embodiment, this is achieved by providing the blocking element with a single barrier arm only that is rotated about an angle of about 360° between each blocking position. Alternatively, a second embodiment can solve the problem by providing the blocking element with two barrier arms offset at 180° that are rotated about an angle of 180° between each blocking position.
When passage has been allowed by the control device permitting entry (card reader, coin machine, checking person etc.), the driving motor starts and rotates the blocking element about an angle of at least 90°, which may be as much as 270° if a single barrier arm is provided, so that passage is completely unimpeded. Now, the user can pass, since no barrier arm, neither in front of him nor behind him, projects into the passageway, and gets after passing the blocking position into the range of the sensor. The latter-mentioned starts the driving motor again so that behind the user the barrier arm pivots again into the blocking position.
Hence, the number of barrier arms provided is such that there is at least one position in which passage is unimpeded over the full width without restriction and hindrance. Nevertheless, all requirements to the turning blocking device are fulfilled, i.e., there are provided a mechanical barrier against unauthorized passage in both directions, as well as all other possibilities for checking and counting users and for channelling users into one queue. In this arrangement, it is a particular advantage that in case of an emergency switching, it is only necessary to put the drive out of function only in the position of the barrier arm after the first partial rotation. For this purpose, parts need not be uncoupled or dismounted since passage is completely unimpeded after the first partial rotation.
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patent: 5203111 (1993-04-01), Huber et al.
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patent: 5542211 (1996-08-01), Colombo
patent: 5704163 (1998-01-01), Kocznar
patent: 5705982 (1998-01-01), Faltings
patent: 1474706 (1969-07-01), None
patent: 506152 (1992-09-01), None
patent: 0622518 (1994-04-01), None
patent: 2175348 (1996-11-01), None
patent: 403267490 (1991-11-01), None
patent: 9425720 (1994-11-01), None
Dermutz Peter
Kocznar Wolfram
Chin-Shue Alvin
Cohen Curtis A.
Lorusso & Loud
Skidata Computer (yesellschaft m.b.H.)
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