Patent ID: 11971613
Assignee: VISUAL IMPACT FILMS CORP.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The apparatus of claim 1, wherein:
the surfaces of the first and second bases that face the first and second heads, respectively, are textured surfaces, and the surfaces of the first and second head that face the first and second bases, respectively, are textured surfaces;
an amount of friction of both the textured surface of the first base and the textured surface of the first head against the first fastener is such that both (i) the first connector is allowed to rotate relative to the first fastener at the times including when the user moves the strap relative to the first and second fasteners and (ii) the first connector is prevented from rotating relative to the first fastener at the other times; and
an amount of friction of both the textured surface of the second base and the textured surface of the second head against the second fastener is such that both (i) the second connector is allowed to rotate relative to the second fastener at the times including when the user moves the strap relative to the first and second fasteners and (ii) the second connector is prevented from rotating relative to the second fastener at the other times.