Signal bladder
Patent 4240371 Issued on December 23, 1980. Estimated Expiration Date: 
August 17, 1999. 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.
August 17, 1999. 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 2418397 2569977 2830309 3746285 3874325 Radio-balloon distress signal Portable diver distress signalling device Patent #: 4080677 InventorApplicationNo. 06/068324 filed on 08/17/1979US Classes:116/210, Inflatable type441/26, Reel for tether441/30, Inflatable441/6Marker buoyExaminersPrimary: Yasich, Daniel M.Attorney, Agent or FirmInternational ClassesB63C 9/26 (20060101)B63C 11/26 (20060101) B63C 9/00 (20060101) B63C 11/02 (20060101) Foreign Application Priority Data1978-08-28 NZAbstractA signalling device for underwater divers, in the form of an inflatable bladder held within a container and attached to a reel. The device can be attached to a diver, being strapped to his arm or to his air tank, for example. The device can be actuated by pulling a handle, which releases a gas cartridge to inflate the bladder as it is simultaneously released from the container to float to the surface. Rescuers can then follow the line down to the reel to locate the diver. | |
