DE8807519U1 - Car alarm device - Google Patents

Description

L-Ajppajratebau Gertrude Cress D - 6451 Erlensee, Odenwaldstrasse 3 Telephone: O 06183 -1323 G. CRESS. - D- 6451 ERLENSEE, ODENv/alDSTRASSE 3

At

German Patent Office

Zweibrückenstrasse 8000 MUNICH

Against car thieves:

RC- AUTO- PROTECTOR Against burglary:

RC- Alarm- PROTECTOR Against attack:

RC alarm systems for Home, Business, Car, TAXI

Date:

6.6.1Ö83

Application for a utility model for: Vehicle owner recognition in car alarm systems with sole or additional optical alarm when using RC-Auto-PROTECTOR alarm devices from the applicant.

In car alarm systems, optical signals are permitted in addition to acoustic signals (usually lasting a maximum of seconds). These signals may last up to 5 minutes and are usually emitted at a frequency of approx. 4f0 Hz per minute (and a light duration of approx. 50%). This additional optical alarm signal via the vehicle's direction indicators, which will soon be permitted in Germany, particularly at the instigation of the police, is intended to make it easier to identify the location of a vehicle affected by a break-in, even after the acoustic alarm has been automatically switched off. The optical alarm is of little importance to a burglar.

However, this flashing light alarm, which is being sought and already used in some cases by alarm device manufacturers, can be confused with, for example, accident warning lights, hold-up lights in taxi alarm systems, other flashing light signals, etc.

In car alarm systems with RC-Auto-PROTECTOR alarm devices, two out of four light periods are suppressed. This results in the light being switched off, contrary to the usual flashing.

Light Dark Light Dark Light Dark Light etc. a clearly recognizable and distinguishable flashing

Light Dark Light Ounkel Dark Dark Dark Dark

Bright Dark Bright Dark Dark Dark Dark Dark Bright Dark Bright Dark Dark Dark Dark etc.,

It is irrelevant whether the optical alarm begins with any light or dark phase.

As a result, .

This gives the vehicle owner who uses an alarm device with this feature for his alarm system the advantage of being able to recognize from a great distance from a potentially very large number of parked vehicles whether a burglary has occurred. It can be his vehicle, assuming the improbability that two or more vehicles with the alarm system activated are parked together and that all vehicles have alarm devices with the same flashing rhythm. In addition to sufficient conspicuity and the possibility of detection, there is also a 50% (and in the case of danger

This adds to the electricity savings generally sought by energy reporting systems.

Several electrical/electronic arrangements are possible. Protection rights are being applied for for two of the arrangements described.

Erlensee, June 1988

Claims (4)

1.) Auto alarm device characterized in that a clock generator A for two interdependent frequencies B and C or B and D are integrated in a frequency ratio of 1:2 and a pulse ratio of about 50 % . Fig. 1. Frequency B has about 60 to 210, usually about 150 pulses per minute. 2.) Car alarm device characterized in that (in addition to the transistor F with base resistance G for the usual power supply of lights L or relays R) a special transistor H with associated base resistance I, Fig. 2, or a special diode K, Fig. *. is integrated. 3.) Car alarm device characterized in that in the arrangement according to Fig. 2 or 3 the lights L or relays R are operated via the transistor F only at the cycle times (of the frequency B) 1, 2, 5, 6, 9, 10 etc. or at the cycle times 3, 4, 7, 8, 11, 12 etc. 4.) Alarm device characterized in that in order to achieve a sufficient blocking effect of the transistor F during the dark phases, if necessary , a further diode E is integrated. Erlensee, 6 June 1988 Alaijiut atebau Phone: «163.1323 Cl ·-—■■■■ '