Wall anchor

1. A wall anchor, comprising:

a nose cone structure including a body and a primary cone with a leading end and a trailing end, which is rotatably coupled to the body and manually urgeable to penetrate a substrate;

a detent assembly, disposed on the nose cone structure, which is engageable to maintain the primary cone in a first position; and

a trigger integrally coupled to the nose cone structure at the trailing end of the primary cone and actuatable to selectively disengage the detent assembly such that the primary cone is permissively rotatable about the body into a second position.

2. The wall anchor according to claim 1 , wherein the nose cone structure is tapered from a relatively wide trailing end to the leading end, which is pointed.

3. The wall anchor according to claim 1 , wherein the nose cone structure has a substantially oblong cross-section.

4. The wall anchor according to claim 1 , further comprising wings disposed on at least the body.

5. The wall anchor according to claim 1 , wherein the body comprises:

a flange disposed at a trailing end thereof to abut the substrate to thereby inhibit movement of the body in the penetration direction; and

first and second transverse faces disposed at a leading end thereof, the primary cone being rotatably coupled to the first face.

6. The wall anchor according to claim 5 , wherein the flange comprises a rounded edge.

7. The wall anchor according to claim 5 , further comprising an auxiliary cone rotatably coupled to the second face, which is maintained by the detent assembly engagement in a first position thereof at which respective mating surfaces of the primary and auxiliary cones are substantially adjacent.

8. The wall anchor according to claim 7 , wherein profiles of the primary and auxiliary cones are convex and concave, respectively.

9. The wall anchor according to claim 7 , wherein the primary and auxiliary cones both comprise pointed ends.

10. The wall anchor according to claim 7 , wherein the detent assembly comprises:

a first detent part disposed at the primary cone mating surface and including a hooked formation; and

a second detent part disposed at the auxiliary cone mating surface and including a shoulder portion, which is impinged upon by the hooked formation and which opposes a direction of rotation of the primary cone.

11. The wall anchor according to claim 10 , wherein outermost surfaces of the first and second detent parts are substantially aligned.

12. The wall anchor according to claim 1 , wherein the trigger is actuatable by insertion of a member through the body.

13. The wall anchor according to claim 12 , wherein a further actuation of the trigger causes the primary cone to rotate about the face of the body.

14. The wall anchor according to claim 13 , wherein an axial distance between a trailing end of the body and the primary cone upon a completion of the further actuation of the trigger is substantially similar to or less than a substrate width.

15. The wall anchor according to claim 1 , wherein the trigger has a substantially cantilevered structure and comprises:

an elastic throat portion coupled to the primary cone; and

a substantially resilient hammer portion disposed at a distal end of the throat portion.

16. The wall anchor of claim 1 , wherein

when the primary cone is in the first position the nose cone structure applies an initial pressure onto the substrate; and

when the primary cone is in the second position the nose cone structure applies an increased pressure onto the substrate.

17. The wall anchor according to claim 16 , wherein the pressures are respectively associated with friction generated between the substrate and the nose cone structure.

18. The wall anchor according to claim 16 , further comprising an auxiliary cone biased to rotate upon disengagement of the detent assembly to thereby apply further pressure onto the substrate.

19. A wall anchor system, comprising:

a nose cone structure including a body and a primary cone with a leading end and a trailing end, which is rotatably coupled to the body and manually urgeable to penetrate a substrate, a detent assembly disposed on the nose cone structure, which is engageable to maintain the primary cone in a first position and a trigger integrally coupled to the nose cone structure at the trailing end of the primary cone and actuatable to selectively disengage the detent assembly such that the primary cone is permissively rotatable into a second position; and

a member, which is insertable through the body to impinge upon and thereby actuate the trigger, to selectively disengage the detent assembly to thereby permit rotation of the primary cone about the body into a second position.

20. The wall anchor system according to claim 19 , wherein the member comprises a screw.