Eyeglass frame having tension adjustable temple coupling

An eyeglass frame comprising:

• (a) a lens frame member;
• (b) a plurality of temple members, each said temple having a front end portion defining a tunnel cavity extending longitudinally therein, said front end portion having formed therein a pit opening communicating with said tunnel cavity;
• and,
• (c) a coupling assembly coupled to each of said temple members for hingedly coupling said temple member to said lens frame member in tension adjustable manner, said coupling assembly including:
• at least one hinge member disposed in pivotally displaceable manner relative to said lens frame member, said hinge member engaging said tunnel cavity of one said temple member;
• an assembly element coupled to said hinge and temple members for locking the engagement thereof, said assembly element extending transversely into said tunnel cavity through said pit opening of said temple member, said assembly element being disposed selectively in at least first and second alternative positions;
• and,
• a spring element disposed within said tunnel cavity of said temple member, said spring element engaging said assembly element for resiliently biasing the coupling of said hinge and temple members, said spring element generating different degrees of bias responsive to said assembly element being in said first and said second positions.