Ratcheting take-up device

• US 8,881,478 B2
• Filed: 06/22/2012
• Issued: 11/11/2014
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: Simpson Strong-Tie Company Incorporated (Simpson Manufacturing Company Incorporated)
• Original Assignee: Simpson Strong-Tie Company Incorporated (Simpson Manufacturing Company Incorporated)
• Inventors: Gray, Daniel M., McGurty, Lisa M., Wert, Bryan David, Strawn, Thomas Maxwell
• Primary Examiner(s): Herring, Brent W
• Application Number:
  US13/531,159
• Publication Number:
  US 20130340366A1
• Time in Patent Office: 872 Days
• Field of Search: 522/231.4, 528/49, 522/91, 525/731, 411/433, 411/267
• US Class Current: 52/223.14
• CPC Class Codes: E04B 1/26 the supporting parts consisting of wood
• CPC Class Codes: E04B 2001/2688 self adjusting, e.g. for compensation of shrinkage
• 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: Y10T 403/32541 Rotatable members resiliently biased to one position
• CPC Class Codes: Y10T 403/551 Externally bridged

Abstract

A ratcheting take-up device that compensates for imperfect alignment in a tie rod continuity system in the frame of a building wall. The upper ends of the tie rods are tightly clamped within the take-up device by domed segments inserted in a bowl-shaped housing. The segments are also forced together by a compression member in the housing. The domed shape of the segments and the bowl shape of the housing cooperate so that the segments can rotate in any direction to accommodate tie rods that are not perfectly vertical, without a corresponding loss of strength in the connection.

Claims

1. A take-up device (1) in a connection, the take-up device comprising:

a. a housing (26) with an outer bore (27) the outer bore (27) having a lower inward-curved portion (43) that is frusto-spherical;

b. a plurality of insert segments (2) primarily disposed in the outer bore (27) and primarily contained securely within the housing (26), each of which has an outer bore-interfacing surface (17) that interfaces with the inward-curved portion (43) of the outer bore (27) of the housing (26), wherein;

i. the outer bore-interfacing surfaces (17) of the plurality of insert segments (2) collectively form a segmented frusto-spherical surface where the outer bore-interfacing surfaces (17) interface with the outer bore (27);

ii. each insert segment (2) has a concave inner bore-defining surface (14) and the plurality of concave inner bore-defining surfaces (14) form a generally tubular inner bore (16);

c. wherein the take-up device is fastened to a first structural member (115); and

d. a tie rod (24) is at least partially held within the inner bore (16) of the take-up device (1) by a plurality of the insert segments (2), the tie rod (24) having a top end (124) that can pass through the housing (26).

2. The take-up device (1) of claim 1 wherein:

a. the outer bore (27) of the housing (26) has a ledge (45) proximate the most constricted part of the inward-curved portion (43);

b. the insert segments (2) each have a top surface (3) and a bottom edge (21) opposite the top surface;

c. the bottoms edges (21) of the insert segments (2) interface with the ledge (45) in the outer bore (27), stabilizing the insert segments (2).

3. The take-up device (1) of claim 2 wherein the bottom edge (21) of the insert segments (2) has a flat section (121) that interfaces with the ledge (45) in the outer bore (27).

4. The take-up device (1) of claim 3 wherein:

a. the flat section (121) of each bottom edge (21) of the insert segments (2) is 0.0085 inches wide;

b. the ledge (45) in the outer bore (27) is 0.0115 inches wide; and

c. each insert segment (2) is 0.539 inches tall from the top surface (3) to the bottom edge (21).

5. The take-up device (1) of claim 1 having four insert segments (2), each insert segment (2) having:

a. a substantially planar top surface (3) with;

i. a concave inner bore-defining edge (4) with first and second ends (5);

ii. a convex outer bore edge (7) with first and second ends (8);

iii. a first substantially straight side edge (6) that connects the first end (5) of the inner bore-defining edge (4) to the first end (8) of the outer bore edge (7); and

iv. a second substantially straight side edge (6) that connects the second end (5) of the inner bore-defining edge (4) to the second end (8) of the outer bore edge (7);

b. a tab (9) on the convex outer bore edge (7), wherein;

i. the inner bore-defining surface (14) descends from the inner bore-defining edge (4); and

ii. the outer bore-interfacing surface (17) descends from the outer bore-defining edge (7) and tapers to a bottom edge (21).

6. The take-up device (1) of claim 5 wherein the inner bore (16) is threaded.

7. The take-up device (1) of claim 5 wherein:

a. the take-up device (1) has a central axis (100);

b. each of the tabs (9) on the convex outer bore edges (7) of the insert segments (2) has a outer edge (10), two sides edges (12), a top surface (103) and a bottom surface (20);

c. the outer edges (10) of the tabs (9) on opposed insert segments (2) are 1.375 inches apart;

d. the two side edges (12) of each tab (9) are 0.25 inches apart;

e. the top surface (103) and the bottom surface (20) of each tab (9) are 0.12 inches apart;

f. the outer bore-interfacing surfaces (17) of the insert segments (2) have a radius of 0.5 inches;

g. the bottom surface (20) of each tab (9) joins the outer bore-interfacing surface (17) of each tab (9) at a tab juncture (25) that has a radius of 0.02 inches;

h. each concave inner-bore defining surface (14) of each insert segment (2) has a bottom end (23) with a chamfer (36) that is between 30 and 60 degrees relative to the central axis (100) of the take-up device; and

i. the chamfer (36) widens the inner bore (16) to a maximum width o 0.545 inches.

8. The take-up device (1) of claim 1 wherein:

a. the housing (26) additionally comprises a vertical body (28); and

b. the outer bore (27) of the housing (26) is contained within the vertical body (28).

9. The take-up device (1) of claim 8 wherein:

a. the housing (26) additionally comprises a horizontal plate (29) surmounted by the vertical body (28).

10. The take-up device (1) of claim 8 wherein:

a. the vertical body (28) has an outer wall (34) with a top edge (33);

b. a plurality of indentations (35) extend down from the top edge (33) of the wall (34); and

c. a tab (9) of an insert segment (2) interfaces with each of the indentations (35) in the wall (34) of the cylindrical body (28).

11. The take-up device (1) of claim 10 wherein:

a. the vertical body (28) of the housing (26) has an outer diameter of 1.282 inches at the top edge (33) of the outer wall (34) of the vertical body (28);

b. the outer bore (27) of the housing (26) has a diameter of 1.209 inches at the top edge (33) of the outer wall (34) of the vertical body (28); and

c. each indentation (35) in the outer wall (34) is 0.454 inches deep.

12. The take-up device (1) of claim 1 wherein the insert segments (2) are retained within the outer bore (27) by a compression member (46).

13. The take-up device (1) of claim 12 wherein the compression member comprises:

a. an upper hard washer (47) and;

b. a resilient spring (48) that pushes the insert segments (2) into the outer bore (27) and is restrained from upward movement by the upper hard washer (47).

14. The take-up device (1) of claim 13 wherein the resilient spring (48) is a soft washer (48).

15. The take-up device (1) of claim 14 wherein:

a. the compression member (46) additionally comprises a lower hard washer (47) that is between the resilient lower soft washer (48) and the insert segments (2).

16. The take-up device (1) of claim 15 wherein:

a. the vertical body (28) has an outer wall (34) with a top edge (33);

b. a plurality of indentations (35) extend down from the top edge (33) of the wall (34);

c. the upper hard washer (47) has an outer edge (51) with a plurality of projections (49);

d. the outer bore (27) has a groove (40) connected to the indentations (35) in wall (34) of the vertical body (28); and

e. the projections (49) of the upper hard washer (47) project into the groove (40) in the outer bore (27), restraining the compression member (46).

17. The take-up device (1) of claim 16 wherein:

a. the lower hard washer (47) has an outer edge (51) with a plurality of projections (49); and

b. the projections (49) of the lower hard washer (47) project into the indentations (35) in wall (34) of the vertical body (28), stabilizing the compression member (46).

18. The take-up device (1) of claim 17 wherein:

a. the groove (40) in the outer bore (27) is 0.062 inches tall, 0.045 inches below the top edge (33) of the outer wall (34), and has a U-shaped cross section with an internal radius of 0.031 inches;

b. the outer bore (27) is 0.941 inches in height, and the outer bore (27) has an upper vertical portion (41) that descends 0.431 inches from the top edge (33), a middle inward-angled portion (42) that descends from the upper vertical portion (41), a lower inward-curved portion (43) with a radius of 0.510 inches that descends from the middle inward-angled portion (42), and a flared bottom portion (44) with a depth of 0.091 inches that descends from the lower inward-curved portion (43).

19. The take-up device (1) of claim 17 wherein:

a. the upper hard washer (47) has a an inner edge (50) with a pair of substantially semicircular inclusions (52), each with a radius of 0.063 inches, and a pair of arcs (53) between the inclusions (52), both arcs (53) having a diameter of 0.562 inches;

b. the outer edge (51) of the upper hard washer (47) has four pairs of substantially semicircular inclusions (54), each with a radius of 0.063 inches, four small arcs (55), each on a projection (49) bounded by a pair of inclusions (54) and with a diameter of 1.187 inches, and four large arcs (56) between each pair of inclusions (54) that each has a diameter of 1.108 inches; and

c. the upper hard washer (47) is 0.047 inches thick.

20. The connection (110) of claim 1 wherein:

a. the first structural member (115) is a top plate (115) in an at least partially wood frame wall (111), and the take-up device (1) rests on a bearing plate (120) attached to the top plate (115) with the same fasteners (119) as the take-up device (1).

21. The connection (110) of claim 20 wherein:

a. the tie rod (24) is secured to a foundation (112) below the wood frame wall (111).

22. The connection (110) of claim 1 wherein:

a. the outer bore (27) of the take-up device (1) has a central vertical axis (100);

b. the tie rod (24) is not parallel to the central vertical axis (100) of the outer bore (27); and

c. the insert segments (2) that hold the tie rod (24) are canted so the inner bore (16) is parallel to the tie rod (24) where the tie rod (24) is held by the insert segments (2) but the inner bore is not parallel to the central vertical axis (100) of the outer bore (27).

23. A method of forming the connection (110) of claim 1 comprising the steps of:

a. inserting the top end (124) of the tie rod (24) into the inner bore (16) of the take-up device; and

b. fastening the take-up device (1) to the first structural member (115).

24. The method of claim 23 additionally comprising the steps of:

a. inserting the tie rod (24) through a bottom portion (44) of the outer bore (27) in the housing (26).

25. The method of claim 24 additionally comprising the steps of:

a. inserting the tie rod (24) through the first structural member (115).

26. The method of claim 25 wherein:

a. the take-up device (1) is fastened to the first structural member (115) with a plurality of screws (119).

27. A take-up device (1) in a connection, the take-up device comprising:

a. a housing (26) with an outer bore (27) the outer bore (27) having a lower inward-curved portion (43) that is frusto-spherical;

b. a plurality of insert segments (2) primarily disposed in the outer bore (27) and primarily contained securely within the housing (26), each of which has an outer bore-interfacing surface (17) that interfaces with the inward-curved portion (43) of the outer bore (27) of the housing (26), wherein;

i. the outer bore-interfacing surfaces (17) of the plurality of insert segments (2) collectively form a segmented frusto-spherical surface that interfaces with at least a portion of the lower inward-curved portion (43) of the outer bore (27) of the housing (26);

ii. each insert segment (2) has a concave inner bore-defining surface (14) and the plurality of concave inner bore-defining surfaces (14) form a generally tubular inner bore (16);

c. wherein the take-up device is fastened to a first structural member (115); and

d. a tie rod (24) is at least partially held within the inner bore (16) of the take-up device (1) by a plurality of the insert segments (2), the tie rod (24) having a top end (124) that can pass through the housing (26).

28. The take-up device (1) of claim 27 wherein:

a. the outer bore (27) of the housing (26) has a ledge (45) proximate the most constricted part of the inward-curved portion (43);

b. the insert segments (2) each have a top surface (3) and a bottom edge (21) opposite the top surface; and

c. the bottoms edges (21) of the insert segments (2) interface with the ledge (45) in the outer bore (27), stabilizing the insert segments (2).

29. The take-up device (1) of claim 28 wherein the bottom edge (21) of the insert segments (2) has a flat section (121) that interfaces with the ledge (45) in the outer bore (27).

30. The take-up device (1) of claim 27 having four insert segments (2), each insert segment (2) having:

a. a substantially planar top surface (3) with;

i. a concave inner bore-defining edge (4) with first and second ends (5);

ii. a convex outer bore edge (7) with first and second ends (8);

iii. a first substantially straight side edge (6) that connects the first end (5) of the inner bore-defining edge (4) to the first end (8) of the outer bore edge (7); and

iv. a second substantially straight side edge (6) that connects the second end (5) of the inner bore-defining edge (4) to the second end (8) of the outer bore edge (7);

b. a tab (9) on the convex outer bore edge (7), wherein;

i. the inner bore-defining surface (14) descends from the inner bore-defining edge (4); and

ii. the outer bore-interfacing surface (17) descends from the outer bore-defining edge (7) and tapers to a bottom edge (21).

31. The take-up device (1) of claim 30 wherein the inner bore (16) is threaded.

32. The take-up device (1) of claim 27 wherein:

a. the housing (26) additionally comprises a vertical body (28); and

b. the outer bore (27) of the housing (26) is contained within the vertical body (28).

33. The take-up device (1) of claim 32 wherein:

a. the housing (26) additionally comprises a horizontal plate (29) surmounted by the vertical body (28).

34. The take-up device (1) of claim 32 wherein:

a. the vertical body (28) has an outer wall (34) with a top edge (33);

b. a plurality of indentations (35) extend down from the top edge (33) of the wall (34); and

c. a tab (9) of an insert segment (2) interfaces with each of the indentations (35) in the wall (34) of the cylindrical body (28).

35. The take-up device (1) of claim 27 wherein the insert segments (2) are retained within the outer bore (27) by a compression member (46).

36. The take-up device (1) of claim 35 wherein the compression member comprises:

a. an upper hard washer (47) and;

b. a resilient spring (48) that pushes the insert segments (2) into the outer bore (27) and is restrained from upward movement by the upper hard washer (47).

37. The take-up device (1) of claim 36 wherein the resilient spring (48) is a soft washer (48).

38. The take-up device (1) of claim 37 wherein:

a. the compression member (46) additionally comprises a lower hard washer (47) that is between the resilient lower soft washer (48) and the insert segments (2).

39. The take-up device (1) of claim 38 wherein:

a. the vertical body (28) has an outer wall (34) with a top edge (33);

b. a plurality of indentations (35) extend down from the top edge (33) of the wall (34);

c. the upper hard washer (47) has an outer edge (51) with a plurality of projections (49);

d. the outer bore (27) has a groove (40) connected to the indentations (35) in wall (34) of the vertical body (28); and

e. the projections (49) of the upper hard washer (47) project into the groove (40) in the outer bore (27), restraining the compression member (46).

40. The take-up device (1) of claim 39 wherein:

a. the lower hard washer (47) has an outer edge (51) with a plurality of projections (49); and

b. the projections (49) of the lower hard washer (47) project into the indentations (35) in wall (34) of the vertical body (28), stabilizing the compression member (46).

41. The connection (110) of claim 27 wherein:

a. the outer bore (27) of the take-up device (1) has a central vertical axis (100);

b. the tie rod (24) is not parallel to the central vertical axis (100) of the outer bore (27); and

c. the insert segments (2) that hold the tie rod (24) are canted so the inner bore (16) is parallel to the tie rod (24) where the tie rod (24) is held by the insert segments (2) but the inner bore is not parallel to the central vertical axis (100) of the outer bore (27).