Protective helmet with voice communication system
Patent 4152553 Issued on May 1, 1979. Estimated Expiration Date: 
April 5, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 5, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2942072 3845389 Communications device arranged to be worn in intimate contact with the body of a user Patent #: 3983483 InventorAssigneeApplicationNo. 05/893672 filed on 04/05/1978US Classes:379/430, Body supported (e.g., headgear)381/152, Driven diverse static structure (e.g., wall, sounding board)455/575.2HeadgearExaminersPrimary: Cooper, William C.Attorney, Agent or FirmInternational ClassesA42B 3/04 (20060101)A42B 3/30 (20060101) H04M 1/05 (20060101) H04M 1/04 (20060101) AbstractAn improved protective helmet of the type including a two-way voice controlled communication system having electronic transmitting and receiving circuitry. When incoming signals are received by the voice communication system, a transducer vibrates a rigid portion of the helmet, causing the helmet to act as a diaphragm to produce intelligible audible sounds. The electronic circuitry of the voice communication system is mounted in a resilient carrier for protection against damage from impact and shock to the helmet. Alternatively, the electronic circuitry may be supported on and protected by the conventional cushion lining of a protective helmet. | |
