Concrete anchor

• US 20110041449A1
• Filed: 02/04/2010
• Published: 02/24/2011
• Est. Priority Date: 02/04/2009
• Status: Active Grant

• Current Assignee: Cetres Holdings, LLC
• Original Assignee: Thomas M. Espinosa
• Inventors: Espinosa, Thomas M.
• Granted Patent: US 8,943,777 B2
• Time in Patent Office: Days
• US Class Current: 52/698
• CPC Class Codes: E02D 35/00 Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations foundations for sinking territories with incorporated means for remedying settlement E02D27/34; lifting or moving buildings E04G23/06
• CPC Class Codes: E04B 1/4121 with internal threads or non-adjustable captive nuts
• CPC Class Codes: E04B 1/4128 receiving adjustable or removal nuts
• CPC Class Codes: E04B 1/4157 Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
• CPC Class Codes: E04B 2001/2684 with metal connectors
• CPC Class Codes: E04B 2001/3583 using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure
• CPC Class Codes: E04B 2001/4192 attached to concrete reinforcing elements, e.g. rods or wires
• CPC Class Codes: E04C 5/0645 Shear reinforcements, e.g. shearheads for floor slabs
• CPC Class Codes: E04C 5/16 Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups E04C5/06 takes precedence; tools connecting reinforcing elements E04G21/12

Abstract

An anchor for attaching a structure to a concrete structure, comprises an anchor rod having a lower threaded portion for being embedded in a concrete structure and an upper portion for extending outside the concrete structure; an anchor body including a first threaded central opening for threadedly receiving one end portion of the lower threaded portion; and a support including a floor. The support includes a second central threaded opening through the floor portion for threadedly receiving another end portion of the lower portion.

Claims

1. An anchor for supporting a load, comprising:

a) an anchor rod having a lower threaded portion for being embedded in a concrete structure and an upper portion for extending outside the concrete structure;

b) an anchor body including a first threaded central opening for threadedly receiving one end portion of said lower portion;

c) a molded support including a floor portion; and

d) said support including a second central threaded opening through said floor portion for threadedly receiving another end portion of said lower portion.

2. An anchor as in claim 1, and further comprising leg portions extending downwardly from said floor portion.

3. An anchor as in claim 2, wherein:

a) said leg portions include respective holes for holding respective nails; and

b) said holes are narrower at their intermediate portions to frictionally hold respective nails within said holes.

4. An anchor as in claim 2, wherein:

a) said floor portion includes a plurality of openings to facilitate flow of concrete slurry to underneath said floor portion;

b) said floor portion includes a bottom surface; and

c) said bottom surface includes a plurality of channels communicating with respective said plurality of openings.

5. An anchor as in claim 4, wherein said bottom surface is slanted upwardly from said second central threaded opening.

6. An anchor as in claim 1, wherein said support includes a peripheral vertical wall portion attached to said floor portion and said leg portions.

7. An anchor as in claim 1, wherein:

a) said anchor body includes an outwardly disposed shoulder portion; and

b) said support includes flexible fingers extending radially inwardly for retaining said shoulder portion to said support.

8. An anchor as in claim 7, wherein said flexible fingers are disposed above said floor portion.

9. An anchor as in claim 1, wherein said anchor body includes at least one inverted conical surface and a bottom shoulder extending outwardly therefrom.

10. An anchor as in claim 9, wherein:

a) said inverted conical surface includes another inverted conical surface; and

b) a shoulder disposed at a bottom portion of said another inverted conical surface.

11. An anchor as in claim 1, wherein:

a) said floor portion includes a raised portion disposed around said second central threaded opening; and

b) said anchor body includes a bottom recess for receiving said raised portion.

12. An anchor as in claim 1, wherein said anchor body is a nut.

13. An anchor as in claim 1, wherein:

a) said anchor body includes an outer cylindrical surface; and

b) an outwardly disposed shoulder is disposed at a bottom portion of said cylindrical surface.

14. An anchor as in claim 13, wherein said shoulder is integral with said anchor body.

15. An anchor as in claim 13, wherein:

a) said anchor body includes a circumferential groove at a bottom portion of said cylindrical surface;

b) said at least one shoulder is a split ring removably disposed in said groove; and

c) said ring includes a portion extending outside said groove to form said shoulder.

16. An anchor as in claim 1, wherein:

a) said anchor body includes an outer cylindrical surface;

b) a plurality of circumferential grooves are disposed on said cylindrical surface;

c) a plurality of split rings are disposed in respective said grooves; and

d) portions of said rings extend outwardly of said cylindrical surface to provide respective shoulders.

17. An anchor as in claim 13, wherein said cylindrical surface is threaded.

18. An anchor as in claim 17, wherein:

a) said anchor body includes a circumferential groove at a bottom portion of said cylindrical surface;

b) said shoulder is a split ring removably disposed in said groove; and

c) said ring includes a portion extending outside said groove to form said shoulder.

19. An anchor as in claim 13, wherein:

a) said floor portion includes a raised portion disposed around said second central threaded opening; and

b) said anchor body includes a bottom recess for receiving said raised portion.

20. An anchor as in claim 1, wherein:

a) said support has a circular periphery in plan view; and

b) said leg portions are disposed around said periphery with openings therebetween.

21. An anchor as in claim 2, wherein:

a) said leg portions are four in number and disposed to define a square, with said leg portions being at the respective corners of said square;

b) said second central threaded opening is central of said square; and

c) said leg portions are spaced apart from each other to provide multiple inlets and multiple outlets between adjacent leg portions to facilitate concrete slurry to flow underneath said floor portion.

22. An anchor as in claim 2, wherein:

a) said leg portions are triangular in cross-section to facilitate flow of concrete slurry underneath said floor portion; and

b) said triangular cross-section includes an apex pointing inwardly.

23. An anchor as in claim 4, wherein each of said plurality of openings is disposed between two adjacent leg portions.

24. An anchor as in claim 2, wherein said second threaded opening includes a thread stop to prevent said another end portion from screwing past said thread stop.

25. An anchor as in claim 1, wherein said upper portion is threaded.

26. An anchor as in claim 1, wherein said upper portion terminates into a ring.

27. An anchor as in claim 1, wherein:

a) said anchor body is a metallic tubular body;

b) said tubular body including a sidewall, a top opening and a bottom opening, said sidewall including inside and outside surfaces;

c) said outside surface including at least one shoulder extending outwardly therefrom; and

d) said inside surface including an inverted shoulder extending inwardly therefrom.

28. An anchor as in claim 27, wherein said tubular body is substantially cylindrical.

29. An anchor as in claim 27, wherein said outside surface above said at least one shoulder is conical.

30. An anchor as in claim 27, wherein said outside surface is a recessed profile defined by a downwardly and inwardly projecting surface and an outwardly projecting surface defining said at least one shoulder.

31. An anchor as in claim 30, wherein said inwardly and downwardly projecting surface terminates into said outwardly projecting surface on said outside surface.

32. An anchor as in claim 27, wherein said inside surface is a recessed profile defined by a downwardly and inwardly projecting surface and an inwardly projecting surface defining said inverted shoulder.

33. An anchor as in claim 32, wherein said inverted shoulder is disposed above said inwardly and downwardly projecting surface on said inside surface.

34. An anchor as in claim 27, wherein:

a) said tubular body is a cylindrical sleeve;

b) said outside surface includes at least one circumferential groove;

c) a split ring partly disposed in said at least one circumferential groove such that a portion of said ring extends outside said groove beyond said outside surface; and

d) said portion of said ring comprises said at least one shoulder.

35. An anchor as in claim 34, wherein:

a) said inside surface includes a circumferential groove;

b) a split ring partly disposed in said groove such that a portion of said ring extends outside said groove beyond said inside surface; and

c) said portion of said ring comprises said inverted shoulder.

36. An anchor as in claim 2, wherein said leg portions are wedge-shaped.

37. An anchor as in claim 1, wherein:

a) said floor portion includes a periphery; and

b) said anchor body is disposed within said periphery.

38. An anchor as in claim 2, wherein:

a) said anchor body includes an outwardly extending shoulder at a bottom portion, said anchor body including a bottom recess;

b) said support includes leg portions attached to said floor portion and extending downwardly therefrom; and

c) said floor portion includes a raised portion disposed around said second central threaded opening, said raised portion is received within said recess to lower said shoulder.

48. An anchor as in claim 1, wherein said anchor body is disposed on said floor portion.

49. An anchor as in claim 1, wherein said anchor body is disposed a distance above said floor portion.

39. A holder for an anchor rod, comprising:

a) a molded support including a floor portion, said support having an overall circular shape in plan view;

b) said support including a central threaded opening through said floor portion for threadedly receiving an end portion of an anchor rod; and

c) said floor portion having a bottom surface for resting on a surface prior to said support being embedded in concrete.

40. A holder as in claim 39, and further comprising a peripheral vertical wall portion.

41. A holder as in claim 40, wherein said wall portion includes a top peripheral flange.

42. A holder as in claim 39, wherein said bottom surface is substantially flat.

43. A holder as in claim 39, wherein said floor portion includes a raised portion disposed around said central threaded opening.

44. A holder as in claim 39, and further comprising a plurality of radially inwardly and vertically disposed rib portions having vertical through-openings.

45. A holder for an anchor rod, comprising:

a) a molded support including a floor portion;

b) said support including a plurality of leg portions attached to said floor portion and extending downwardly therefrom;

c) said support including a central threaded opening through said floor portion for threadedly receiving an end portion of an anchor rod;

d) said support including a vertical peripheral wall portion attached to said floor portion and said leg portions, said wall portion extending above said floor portion; and

e) said leg portions extending above said floor portion and attached to said wall portion.

46. A holder as in claim 45, wherein said leg portions are spaced apart from each other to provide multiple inlets and outlets between adjacent leg portions to facilitate flow of concrete slurry underneath said floor portion

47. A holder as in claim 45, wherein said floor portion includes a plurality of openings to facilitate flow of concrete slurry to underneath said floor portion.