Flight helmet with headset
Patent 5003631 Issued on April 2, 1991. Estimated Expiration Date: 
October 5, 2009. 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.
October 5, 2009. 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 2901751 2933086 3621488 3761959 Pneumatic adjustment means for earcups in helmets Patent #: 4700410 InventorAssigneeApplicationNo. 417331 filed on 10/05/1989US Classes:2/6.1, Aviator`s helmet2/413, By fluid-containing cushion2/423, And ears2/909Head protector (e.g., helmet, goggles, etc.)ExaminersPrimary: Schroeder, Werner H.Assistant: Neas, Michael A. Attorney, Agent or FirmForeign Patent References
International ClassA42B 003/30AbstractA helmet formed of a rigid shell and, internally thereof, a liner sized and shaped to the head of the wearer with ear cups secured to the liner. The ear cups have a peripheral surface positionable in contact with the wearer's head. The peripheral surface includes a first annular tube filled with a gel material in contact with the wearer's head around the ears and a second annular tube for urging the first annular tube into conforming contact with the wearer's head. The second annular tube is inflatable and includes tubing means extending through the shell with valve means for inflation and deflation thereof. Also disclosed is the method of fabricating the shell to fit an individual wearer. | |
