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1. WO2014165376 - WRENCH

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A wrench comprising:

a handle defining a first end and a second end opposite from the first end;

a first jaw having a proximal end, a distal end, the first jaw defining an interior face, the proximal end of the first jaw pivotally attached to the first end of the handle;

a second jaw having a proximal end, a distal end, the second jaw defining an interior face, the proximal end of the second jaw pivotally attached to the distal end of the first jaw at a first joint assembly;

a third jaw having a proximal end, a distal end, the third jaw defining an interior face, the proximal end of the third jaw pivotally attached to the distal end of the second jaw at a second joint assembly, the distal end of the third jaw being releasably engageable with the first end of the handle; wherein the first, second, and third jaws are positionable between (i) a closed position in which the distal end of the third jaw is engaged with the first end of the handle and the interior faces of the first, second, and third jaws define an enclosed gripping region defining a closure span, and (ii) a fully opened position in which the distal end of the third jaw is spaced from the first end of the handle to thereby enable radial access to the gripping region;

wherein when the wrench is in a fully opened position at least one of the following occurs:

(a) a maximum distance between the distal end of the third jaw and the first end of the handle is jess than 300% of the closure span;

(b) a maximum distance between opposite interior faces of the first jaw and the second jaw is less than 300% of the closure span; and

(c) a maximum distance between opposite interior faces of the second jaw and the third jaw is less than 300% of the closure span.

2. The wrench of claim 1 wherein the distal end of the first jaw defines a first aperture, the proximal end of the second jaw defines a second aperture, and the first joint assembly includes a pin extending through the first and second apertures aligned with one another.

3. The wrench of any one of claims 1-2 wherein the first joint assembly further includes a shoulder projecting from one of the first jaw and the second jaw which upon angular extension of the first and second jaw, contacts a stop face defined on the other of the first and second jaw, to thereby limit any further angular extension of the first and second jaws.

4. The wrench of any one of claims 1-3 wherein the distal end of the second jaw defines a first aperture, the proximal end of the third jaw defines a second aperture, and the second joint assembly includes a pin extending through the first and second apertures aligned with one another.

5. The wrench of any one of claims 1-4 wherein the second joint assembly further includes a shoulder projecting from one of the second jaw and the third jaw which upon angular extension of the second and third jaws, contacts a stop face defined on the other of the second and third jaws, to thereby limit any further angular extension of the second and third jaws.

6. The wrench of any one of claims 1-5 wherein the first joint assembly includes provisions associated with at least one of the first jaw and the second jaw which limit angular displacement between the first and the second jaws to less than 180 degrees.

7. The wrench of any one of claims 1-6 wherein the second joint assembly includes provisions associated with at least one of the second jaw and the third jaw which limit angular displacement between the second and the third jaws to less than 180 degrees.

8. The wrench of any one of claims 1-7 further comprising:

a friction material disposed on at least one of the interior faces of the first, second, and third jaws.

9. The wrench of claim 8 wherein the friction material includes a woven collection of fibers.

10. The wrench of claim 9 wherein the fibers are selected from the group consisting of metallic fibers, polymeric fibers, glass fibers, and combinations thereof.

11. The wrench of any one of claims 8-10 wherein the friction material comprises glass fibers dispersed in a polymeric resin.

12. The wrench of any one of claims 8-11 wherein the friction material is free of asbestos.

13. The wrench of any one of claims 8-12 wherein the friction material is releasably attached to at least one of the interior faces of the first, second, and third jaws.

14. The wrench of any one of claims 8-13 wherein the friction material defines a face that exhibits an arcuate contour defined by a friction face radius, the friction face radius being less than one- half of the closure span.

15. The wrench of claim 14 wherein the friction face radius is within a range of 99.8% to 98% of one-half of the closure span.

16. The wrench of any one of claims 8-15 wherein the friction material has an elastic modulus within a range of from 15 ksi to 1,500 ksi.

17. The wrench of any one of claims 8-16 wherein the friction material defines a face having a plurality of recesses extending along at least a portion of the face.

18. The wrench of claim 17 wherein the plurality of recesses have a size and configuration sufficient to receive liquid or debris.

19. The wrench of any one of claims 1-18 further comprising:

a biasing member disposed between the first jaw and the handle and configured to bias the first jaw toward the closed position.

20. The wrench of any one of claims 1-19 further comprising:

an outwardly extending finger hook disposed on at least one of the first jaw, the second jaw portion, and the third jaw.

21. The wrench of any one of claims 1-20 wherein the first jaw defines a first stop face and the third jaw defines a second stop face, the first and second stop faces configured and spaced from one another such that when the wrench is in a closed position the first and second stop faces contact one another.

22. The wrench of any one of claims 1-21 wherein one of the first jaw and the handle define an engagement face and the other of the first jaw and the handle define an engagement ridge, the engagement face and the engagement ridge configured to contact each other upon positioning the wrench to the closed position.

23. The wrench of claim 22 wherein the engagement face and the engagement ridge contact one another at a contact angle within a range of from 10° to 30° relative to a plane defined by a pin of the first joint and a pin of the second joint.

24. The wrench of claim 23 wherein the contact angle is 20°.

25. The wrench of any one of claims 8-18 wherein the second jaw and the third jaw pivot relative to one another about a pivot axis, wherein the pivot axis is located such that a plane extending through the pivot axis and oriented parallel to a line transversely intersecting a plane bisecting the friction material, also extends across at least a portion of the gripping region.

26. The wrench of any one of claims 8-18 wherein the first jaw and the second jaw pivot relative to one another about a pivot axis, wherein the pivot axis is located such that a plane extending through the pivot axis and oriented parallel to a line transversely intersecting a plane bisecting the friction material, also extends across at least a portion of the gripping region.

27. A wrench comprising:

a handle defining a first end and a second end;

a plurality of hingedly connected jaw members, the plurality of jaw members including a primary jaw member pivotally attached to the first end of the handle and a terminal jaw member engageable with the handle, each of the plurality of jaw members defining an interior face;

a fibrous friction material disposed on at least one of the interior faces of the plurality of jaw members.

28. The wrench of claim 27 wherein the friction material includes a woven collection of fibers.

29. The wrench of any one of claims 27-28 wherein the fibers are selected from the group consisting of metallic fibers, polymeric fibers, glass fibers, and combinations thereof.

30. The wrench of any one of claims 27-29 wherein the friction material includes glass fibers dispersed in a polymeric resin.

31. The wrench of any one of claims 27-30 wherein the friction material is free of asbestos.

32. The wrench of any one of claims 27-31 wherein the friction material defines a face that exhibits an arcuate contour defined by a friction face radius, the friction face radius being less than one-half of a closure span, the closure span being a maximum distance between opposing faces of the friction material when the wrench is in a closed position.

33. The wrench of claim 32 wherein the friction face radius is within a range of 99.8% to 98% of one-half the closure span.

34. The wrench of any one of claims 27-33 wherein the friction material has an elastic modulus within a range of from 15 ksi to 1,500 ksi.

35. The wrench of any one of claims 27-34 wherein the friction material defines a face having a plurality of recesses extending along at least a portion of the face.

36. The wrench of claim 35 wherein the plurality of recesses have a size and configuration sufficient to receive liquid or debris.

37. The wrench of any one of claims 27-36 further comprising:

a biasing member disposed between the primary jaw member and the handle and configured to bias the primary jaw member toward a closed portion.

38. The wrench of any one of claims 27-37 further comprising:

an outwardly extending finger hook disposed on at least one of the jaw members.

39. The wrench of any one of claims 27-38 wherein the primary jaw defines a first stop face and the terminal jaw defines a second stop face, the first and second stop faces configured and spaced from one another such that when the wrench is in a closed position, the first and second stop faces contact one another.

40. The wrench of any one of claims 27-39 wherein one of the primary jaw and the handle defines an engagement face and the other of the primary jaw and the handle defines an engagement ridge, the engagement face and the engagement ridge configured to contact each other upon positioning the wrench to a closed position.

41. The wrench of claim 40 wherein the engagement face and the engagement ridge contact one another at a contact angle within a range of from 10° to 30°.

42. The wrench of cJaim 41 wherein the contact angle is 20°.

43. The wrench of any one of claims 27-42 wherein the plurality of jaw members total three jaws and include a second jaw member disposed between the primary jaw member and the terminal jaw member.

44. The wrench of claim 43 wherein the plurality of jaw members are positionable between (i) a closed position in which a distal end of the terminal jaw is engaged with the first end of the handle and the interior faces of the jaws define an enclosed gripping region that defines a closure span, and (ii) a fully opened position in which a distal end of the terminal jaw is spaced from the first end of the handle to thereby enable radial access to the gripping region.

45. The wrench of claim 44 wherein the wrench includes a limited articulation provision whereby when the wrench is in a fully opened position at least one of the following occurs:

(a) a maximum distance between the distal end of the terminal jaw and the first end of the handle is less than 300% of the closure span;

(b) a maximum distance between opposite interior faces of the primary jaw and the second jaw is less than 300% of the closure span; and

(c) a maximum distance between opposite interior faces of the second jaw and the terminal jaw is less than 300% of the closure span.

46. The wrench of any one of claims 27-45 wherein the plurality of jaw members include two adjacent jaws, the two adjacent jaws pivot relative to one another about a pivot axis, wherein the pivot axis is located such that a plane extending through the pivot axis and oriented parallel to a line transversely intersecting a plane bisecting the friction material, also extends across at least a portion of a gripping region defined by the plurality of jaw members.

47. A system comprising:

a cylindrical member having a diameter and a maximum allowable load limit associated with the cylindrical member; and

a wrench including (i) a handle defining a first end and a second end, (ii) a plurality of hingedly connected jaw members, the plurality of jaw members including a primary jaw member

pivotally attached to the first end of the handle and a terminal jaw member engageable with the handle, each of the plurality of jaw members defining an interior face, and (iii) a friction material disposed on at least one of the interior faces of the plurality of jaw members, wherein the wrench is positionable between a fully opened position and a closed position, the closed position resulting in the plurality of jaws defining an enclosed gripping region and a closure span extending between faces of friction material on opposing regions of the plurality of jaws, the wrench configured such that the closure span is sized relative to the diameter of the cylindrical member so that upon positioning the cylindrical member within the gripping region and positioning the wrench to the closed position, the loads applied to the cylindrical member from the wrench are less than the maximum allowable load limit associated with the cylindrical member.

48. The system of claim 47 wherein the wrench is configured by a first stop face provided on the primary jaw member and a second stop face provided on the terminal jaw member, the first and second stop faces located relative to one another such that upon positioning the wrench to the closed position, the first and second stop faces contact one another.

49. The system of any one of claims 47-48 wherein the friction material includes a woven collection of fibers.

50. The system of claim 49 wherein the fibers are selected from the group consisting of metallic fibers, polymeric fibers, glass fibers, and combinations thereof.

51. The system of any one of claims 47-50 wherein the friction material comprises glass fibers dispersed in a polymeric resin.

52. The system of any one of claims 47-51 wherein the friction material is free of asbestos.

53. The system of any one of claims 47-52 wherein the friction material defines a face having a plurality of recesses extending along at least a portion of the face.

54. The system of claim 53 wherein the plurality of recesses have a size and configuration sufficient to receive liquid or debris.

55. The system of any one of claims 47-54 wherein the friction material is releasably attached to at least one of the interior faces of the first, second, and third jaw portions.

56. The system of any one of claims 47-55 wherein the friction material defines a face that exhibits an arcuate contour defined by a friction face radius, the friction face radius being less than one- half of the closure span.

57. The system of claim 56 wherein the friction face radius is within a range of 99.8% to 98% of one-half of the closure span.

58. The system of any one of claims 47-57 wherein the friction material has an elastic modulus within a range of from 15 ksi to 1,500 ksi.

59. The system of any one of claims 47-58 further comprising:

a biasing member disposed between the primary jaw member and the handle and configured to bias the primary jaw member toward the closed position.

60. The system of any one of claims 47-59 further comprising:

an outwardly extending finger hook disposed on at least one of the primary jaw member and the terminal jaw member.

61. The system of any one of claims 47-60 wherein the wrench includes a limited articulation provision whereby when the wrench is in a fully opened position at least one of the following occurs:

(a) a maximum distance between the distal end of the terminal jaw and the first end of the handle is less than 300% of the closure span;

(b) a maximum distance between opposite interior faces of the primary jaw and the second jaw is less than 300% of the closure span; and

(c) a maximum distance between opposite interior faces of the second jaw and the terminal jaw is less than 300% of the closure span.

62. The system of any one of claims 47-61 wherein the plurality of jaw members include two adjacent jaws, the two adjacent jaws pivot relative to one another about a pivot axis, wherein the pivot axis is located such that a plane extending through the pivot axis and oriented parallel to a line transversely intersecting a plane bisecting the friction material, also extends across at least a portion of the gripping region defined by the plurality of jaw members.

63. The system of any one of claims 47-62 wherein one of (i) a jaw of the plurality of jaws and (ii) the handle define an engagement face and the other of (i) the jaw of the plurality of jaws and (ii) the handle define an engagement ridge, the engagement face and the engagement ridge configured to contact each other upon positioning the wrench to the closed position.

64. The system of claim 63 wherein the engagement face and the engagement ridge contact one another at a contact angle within a range of from 10° to 30° relative to a plane defined by a pin of a first joint between a first pair of adjacent jaws and a pin of a second joint between a second pair of adjacent jaws.

65. The system of claim 64 wherein the contact angle is 20°.