Patent ID: 7845794

Claim:
A plug device for coupling a frame of a pair of glasses to one of a temple or a head strap buckle, the plug device comprising: a socket member including a receptacle, with the receptacle including an outer lateral wall having inner and outer surfaces spaced in a direction, with the outer lateral wall including an opening extending from the outer surface through the inner surface in the direction and in communication with the receptacle, with the opening including a peripheral wall; a button received in the opening and moveable in the direction, with the button including an inner end having a ledge, with the ledge extending in another direction transverse to the direction to an extent beyond the opening, preventing the button from disengaging from the opening in the direction; a resilient member received in the receptacle and abutting the inner end of the button, with the resilient member biasing the button into the opening; and a plug member including a first end and a second end, with the first end of the plug member including a resilient hook releasably engaged in the receptacle, with the resilient hook including a distal end and an outer end, with the distal end of the resilient hook being releasably received in the opening and abutting the peripheral wall of the opening, with the outer end of the resilient hook abutting the inner end of the button, with the socket member coupled to one of the temple and the head strap buckle, with the plug member coupled to another of the temple and the head strap buckle, with the button being pressable in the direction to disengage the distal end of the resilient hook from the opening, allowing the resilient hook to be removed from the receptacle of the socket member.