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专利名称：Omnidirectional modular siren发明人：Bader, Joseph F.,Gosswiller, Earl W.申请号：EP91113971.5申请日：19910821公开号：EP0474029A3公开日：19921202
专利附图：
摘要：An omnidirectional siren (10) having a plurality of hollow modules (11)supported in vertical alignment on a single, central pole (12). Active modules (11) eachenclose a plurality of audio transducers (i.e., compression drivers) and a horn mechanismwhich guides sound waves from the drivers to an outlet in the lower surface of the
module. The drivers are positioned peripherally within each module so that they can beeasily accessed for repair or replacement through slots (34) in the peripheral surface ofthe module.
申请人：FEDERAL SIGNAL CORPORATION
地址：1415 West 22nd Street, Regency Towers Oak Brook, IL 60521 US
国籍：US
代理机构：Hoeger, Stellrecht & Partner
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