Patent ID: 9382702
Filing Date: 2016-07-05
CPC Classification: E03C,F16B

Claim Text:
1. A sink fastener for fastening a sink unit with an outer flange within an opening in a countertop, comprising: a frame for attachment to a bowl wall of the sink unit; a threaded vertical bolt rotatably mounted at a fixed vertical height within the frame such that a vertical position of the threaded vertical bolt remains unchanged as the threaded vertical bolt is rotated and wherein the bolt is fixed at both ends within the frame to permit one-handed operation; a claw member having a lateral portion threadably mounted on the vertical bolt and an upstanding retainer portion, wherein rotation of the vertical bolt causes the claw member to rise up the bolt to engage an underside of the countertop, and wherein in a lower disengaged position the claw member is free to turn about a vertical axis into a retracted position wherein the claw member lies constrained under the flange to permit insertion of the sink unit into the countertop opening; and a guide member for constraining movement of the claw member, the guide member including a ramp so that as the claw member rises up the bolt, the ramp guides rotation of the claw member to turn about the vertical axis into an outwardly extended position for engagement with the underside of the countertop.