Patent 5734995 Issued on April 7, 1998. Estimated Expiration Date: March 26, 2016. 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 pair of swimming goggles includes two lens frames, two lens units, a nose bridge, two gasket units and a head strap. Each of the lens frames has an inner periphery that defines a lens retaining space, and an outer periphery that has bridge and strap connecting portions. Each of the lens units is mounted on a front part of a respective one of the lens frames in the lens retaining space of the latter. Each of two terminal end portions of the nose bridge is connected to the bridge connecting portion of the respective lens frame. The gasket units are provided on a rear part of the respective lens frame. The head strap has two ends connected respectively to the lens frames. The lens frames, the nose bridge and the gasket units are formed integrally. The strap connecting portion of each of the lens frames is formed integrally with an elongated extension which is connected to one of the ends of the head strap and which is formed with at least one depression to enhance stretchability of the extension, thereby reducing the amount of pulling force that is transmitted to the lens frames by the head strap when the swimming goggles are in use.