Patent 5022878 Issued on June 11, 1991. Estimated Expiration Date: September 2, 2008. 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.
A wet suit style personal flotation device is disclosed which comprises a wet suit adapted for fitting about at least a portion of a wearer and substantially conforming to at least the wearer's torso and a buoyant insert interposed between an outer layer and an inner layer of a vest portion of the wet suit. The buoyant insert extends in front of and behind the wearer's body. The wet suit style personal flotation device is constructed such that the wearer is supported in a slightly back from vertical position in water and such that the wearer can don the suit in less than about 60 seconds.
Wet Vest advertisement in Running Times, Nov., 1988, p. 47
HO sales literature
Wavelength advertisement, Water Ski magazine, 1989 Boat Buyers Guide, special edition (mailed Aug. 1989