ANCHOR
An anchor is provided and includes a hub having a trailing edge, and first and second jaws, each including a body pivotably coupled to the hub and an actuator to induce pivoting of the body, the jaws being initially proximal with the bodies cooperatively forming a lead profile such that the jaws and the hub are configured to penetrate a substrate, separable responsive to fastener insertion through the hub whereby the fastener exerts a first force on the actuators causing splay pivoting of the bodies, and at least partially closeable responsive to continued fastener insertion whereby the fastener exerts a second force on the actuators causing reverse pivoting of the bodies to draw the trailing edge toward the actuators about the substrate.
1 . An anchor, comprising:
a hub having a trailing edge; and
first and second jaws, each including a body pivotably coupled to the hub and an actuator to induce pivoting of the body, the jaws being:
initially proximal with the bodies cooperatively forming a lead profile such that the jaws and the hub are configured to penetrate a substrate,
separable responsive to fastener insertion through the hub whereby the fastener exerts a first force on the actuators causing splay pivoting of the bodies, and
at least partially closeable responsive to continued fastener insertion whereby the fastener exerts a second force on the actuators causing reverse pivoting of the bodies to draw the trailing edge toward the actuators about the substrate.
2 . The anchor according to claim 1 , wherein the substrate comprises a hollow wall having a thickness substantially equal to or less than a thickness of the hub.
3 . The anchor according to claim 1 , wherein trailing edge is defined in accordance with an insertion direction of the jaws and the hub into the substrate.
4 . The anchor according to claim 1 , further comprises a flange disposed at the hub trailing edge to mate with a surface of the substrate.
5 . The anchor according to claim 1 , wherein the hub is formed to define a through-hole through which the fastener is insertible.
6 . The anchor according to claim 1 , further comprising anti-rotation features disposed on the hub to prevent rotation thereof about the fastener.
7 . The anchor according to claim 6 , wherein the fastener comprises a threaded member for which insertion is achieved by rotation of the member about a longitudinal axis thereof.
8 . The anchor according to claim 7 , wherein a lead tip of the threaded member exerts the first force on the actuators in a direction of fastener insertion and threading thereof exerts the second force on the actuators in a direction opposite the fastener insertion direction.
9 . The anchor according to claim 1 , wherein the lead profile comprises a pointed tip.
10 . The anchor according to claim 1 , wherein the jaws comprise hinges by which the bodies are pivotably coupled to the hub.
11 . The anchor according to claim 10 , wherein the hinges and the actuators are disposed proximate to rear portions of the bodies, and wherein the actuators are disposed between the hinges.
12 . The anchor according to claim 1 , wherein the actuators cooperatively define an impingement surface upon which the fastener exerts the first force when the jaws are initially proximal.
13 . The anchor according to claim 1 , wherein the actuators cooperatively define a through-hole through which the fastener is insertible when the jaws are splayed.
14 . The anchor according to claim 13 , wherein actuator surfaces form sidewalls of the through-hole upon which the fastener exerts the second force.
15 . The anchor according to claim 1 , further comprising adhesive to bond the jaws when the jaws are initially proximal.
16 . The anchor according to claim 1 , wherein the bodies further comprise wings having complementarily curved mating surfaces that mate when the jaws are initially proximal.
17 . The anchor according to claim 16 , wherein sides of the wings are complementarily cragged.
18 . The anchor according to claim 1 , wherein the bodies further comprise step formations inhibiting movement of the jaws out of the substrate.
19 . An anchor, comprising:
a hub having trailing and leading edges; and
first and second jaws, each including a body pivotably coupled to the hub leading edge and an actuator to induce pivoting of the body, the jaws being:
initially proximal with the bodies cooperatively forming a lead profile such that the jaws and the hub are configured to penetrate a substrate,
separable responsive to fastener insertion through the hub whereby the fastener exerts a first force on the actuators causing splay pivoting of the bodies, and
at least partially closeable responsive to continued fastener insertion whereby the fastener exerts a second force on the actuators causing reverse pivoting of the bodies to draw the trailing edge toward the actuators in a tightening direction about the substrate.
20 . An anchor for a hollow wall, comprising:
a hub having trailing and leading edges longitudinally separate by a distance substantially similar to a thickness of the hollow wall; and
first and second jaws, each including a body pivotably coupled to the hub leading edge and an actuator to induce pivoting of the body, the jaws being:
initially proximal with the bodies cooperatively forming a lead profile such that the jaws and the hub are configured to penetrate a substrate,
separable responsive to fastener insertion through the hub whereby the fastener exerts a first force on the actuators causing splay pivoting of the bodies, and
at least partially closeable responsive to continued fastener insertion whereby the fastener exerts a second force on the actuators causing reverse pivoting of the bodies to draw the trailing edge toward the actuators in a tightening direction about the substrate.