Allied Corporation

General Signal Corporation

Michael Suchomel

Philip M Anderson, Iii

Jeffrey C Urbanski

James E Kearney

John Z Taran

William C Tipton

A keyless entry system has means for defining an interrogation zone. A marker responsive within the interrogation zone to generate a coded signal cooperates remotely with means for disengaging a locking mechanism upon verification of the coded signal when received.

Keyless entry system having remote marker for motor vehicles

An ionization-type fire detector having a pair of ionized chambers, one of which is arranged so that products of combustion can flow therethrough while the other is substantially isolated from the products of combustion. As a result, when combustion products are present, the electrical conductivity in one chamber is different than the other, and this condition is sensed to provide a fire alarm signal. The first-mentioned ionized chamber is defined by inner and outer shells of plastic material which are suitably spaced from each other and with the inner surface of the outer shell being provided with a conductive coating. The spaced plastic surfaces are curved, and one of the shells defines a cavity which forms at least a part of said first-mentioned chamber. It has been found that this minimizes the adverse effects caused by wind drafts which otherwise can affect the electrical conductivity in the first chamber and provide an erroneous fire alarm signal. The overall arrangement of the detector is such as to provide a compact unit which is attractive in appearance and relatively low cost to manufacture.

Ionization-type fire detector

Growing community of inventors

Mountainside, NJ, United States of America

Michael Suchomel