Variable drive mechanism for the panel of a gate or similar stru

Details Variable drive mechanism for the panel of a gate or similar stru Variable drive mechanism for the panel of a gate or similar stru

1988-02-02

1989-12-19

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318467, 318468, G05D 300

Patent

active

048885312

ABSTRACT:
Variable electrically motorized drive mechanism for gates or similar structure close-off devices that can be installed for the purpose of an assembly operation that is as heavy-duty as possible and without fine adjustments, for which purpose the gate is provided with controls that essentially comprise a position detector, a memory, and a reference-point indicator, the last of which is positioned between the gate-panel limiting positions and outside of any stop positions or defines a corresponding gate-panel reference-point position and synchronizes the position detector at each stroke such that the path that the panel is to travel along from the reference-point position into a particular desired position is dicated or monitored in accordance with a memory output that corresponds to the adjusted position. The system is accordingly continuously self-monitoring and can synchronize itself when the motor is started up again after a power outage and possibly manual operation of the gate.

REFERENCES:
patent: 4092575 (1978-05-01), Ogishi et al.
patent: 4234833 (1980-11-01), Barrett
patent: 4293806 (1981-10-01), Kull et al.
patent: 4364003 (1982-12-01), Phipps
patent: 4401929 (1983-08-01), Odaka et al.
patent: 4498033 (1985-02-01), Aihara et al.
patent: 4529920 (1985-07-01), Yoshida et al.
patent: 4563625 (1986-01-01), Kornbrekke et al.
patent: 4565954 (1986-01-01), Yamanishi et al.

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