US Patent 9622528 Ball cap with slotted bill for eyeglass retention

An improved ball cap (10, 40, 102) is provided having a head-receiving dome (13, 42) and a forwardly extending bill (20, 44, 104). The bill (20, 44, 104) is equipped with at least one eyeglass-retaining slot (36, 50, 52) sized and configured to receive the lower margins of lenses (30) forming a part of eyeglasses (28); the slot (36, 50, 52) may be designed to prevent substantial through-passage of the lenses (30) through the slot (36, 50,52). The slots (36, 50, 52) may be equipped with retainer structure (38, 46).