hingeless frame

rigid frame

A structural framework in which all columns and beams are rigidly connected; there are no hinged joints and the angular relationship between beam and column members are maintained under load.
References in periodicals archive ?
The most high-profile pair is a futuristic wrap from Oakley that tightly fits the face and has a hingeless frame for athletes who don't like anything pinching their ears.
The "Racing Jacket" is characterized by a stronger hingeless frame, is more aerodynamic, sleeker and faster in design than current "Jackets" and draws on the performance features developed for the "Pro M Frame.
OVERTHETOP(TM), the new eyewear technology which debuted on top athletes at the 2000 Olympic Games in Sydney, Australia, features a hingeless frame that wraps the upper cranium and anchors beneath the posterior occipital protuberance of the skull.