Device for automatically closing a power roof of a vehicle

Details Device for automatically closing a power roof of a vehicle Device for automatically closing a power roof of a vehicle

1988-06-24

1990-06-12

Shoop, Jr., William M.

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318283, 307 101, H02P 122

Patent

active

049336100

ABSTRACT:
A motor vehicle has a power roof which can either rotate between a first open position and a closed position or translate between a second open position and the closed position. An electric motor for opening and closing the roof operates from a battery of the vehicle and is connected to the battery by a circuit which can be closed by either of two switches. When the roof is closed, activation of one switch causes the roof to open by rotation while activation of the other switch causes the the roof to open by translation. When the the roof is in an open position, activation of the switch other than that which caused the roof to assume such position effects closing of the roof. The vehicle is equipped with a security system which also operates from the battery and, upon activation, sends a signal to the circuit connecting the motor to the battery. In response to this signal, the circuit issues a short first pulse, a second pulse which is at least as long as the first pulse, a short third pulse, and a fourth and final pulse which is at least as long as the third pulse. The first and fourth pulses activate one of the switches while the second and third pulses activate the other switch. This causes the roof to close completely regardless of the position of the roof at the time the security system is activated.

REFERENCES:
patent: 4464651 (1984-08-01), Duhame
patent: 4480249 (1984-10-01), Heidman, Jr.
patent: 4536687 (1985-08-01), Kurihara et al.
patent: 4634945 (1987-01-01), Takemura et al.
patent: 4644235 (1987-02-01), Ohta

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