Patent ID: 8753388

Claim:
A device for rolling a thin ophthalmic lens into a spiral configuration, the device comprising: a pair of members that each have a sliding surface that terminates in a respective concave recess, the members being slidable one relative to the other along the respective sliding surfaces such that the concave recesses move relative to each other, the concave recesses forming at one limit position of the relative sliding movement of the members a cavity that defines a central axis and which defines the outward configuration of the rolled lens, and at least one of the members being shaped to provide an abutment surface that is defined by a land that protrudes into the cavity from a wall thereof such that the land defines a first end that contacts the sliding surface of the other member and a second end that is spaced radially inward toward the central axis relative to the first end, and has a length that extends transversely to the direction of relative sliding movement of the pair of members, the abutment surface being configured to contact a lens that is to be rolled at a leading first edge of the lens during relative sliding movement of the members along the surfaces so as to restrain the lens against rotational movement within the cavity and to cause a portion of the lens that comprises an opposed second edge of the lens to curl inwardly of the lens, thereby effecting spiral rolling of the lens.