• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A direct tension indicating washer apparatus includes a direct tension indicating washer; a base washer; and an anti-rotation feature to prevent rotation of the direct tension indicating washer relative to the base washer.
    公开号:ES2728719A1
    申请号:ES201890068
    申请日:2017-05-17
    公开日:2019-10-28
    发明作者:Jordan David Richardson；Robert David Westover
    申请人:Applied Bolting Tech；
    IPC主号:
    专利说明:

    [0001]
    [0002] Direct voltage indication device
    [0003]
    [0004] Background
    [0005]
    [0006] The embodiments described herein generally refer to a direct tension indication apparatus and, more particularly, to a direct voltage indication apparatus that includes a direct tension indication washer and a base washer.
    [0007]
    [0008] Direct tension indication washers are used to indicate when the correct bolt tension has been reached. U.S. Pat. 5,931,618, whose complete contents are incorporated herein by reference, discloses an example direct tension indication washer. Figure 1 is a top view of the direct tension indication washer of US Patent 5,931,618. Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1. The direct tension indication washer 60 includes protrusions 12 formed on a first surface 14 and the corresponding indentations 16 formed on a second surface 18. The direct tension indication washer 60 includes channels 62 on the lower surface 18 that lead from each indentation 16 to the outer diameter of the direct tension indication washer 60. The indentation 16 is filled with an indication material 64. When the direct tension indication washer 60 is used with a bolt, the protuberances 12 are compressed as the bolt is tensioned. When the desired bolt tension is reached, the indication material 64 emerges from the channel 62 in the outer diameter of the direct tension indication washer 60. The emission of the indication material provides a visual indicator that the bolt has been properly tensioned.
    [0009]
    [0010] In some installation environments, the installation surface adjacent to the second surface 18 may be rough, worn, perforated, etc. For example, a mounting flange for joining two pipes may have an irregular surface due to the lack of any tolerance control on the surface and / or repeated assembly / disassembly of the pipes. When the direct tension indication washer 60 is used on such a surface, the indication material may remain as a blur or a stain, instead of being emitted cleanly from the outside diameter of the indication indication washer 60 direct tension
    [0011]
    [0012] Short description
    [0013]
    [0014] According to one embodiment, a direct tension indication washer apparatus includes a direct tension indication washer; a base washer; and an anti-rotation feature to prevent rotation of the direct tension indication washer with respect to the base washer.
    [0015]
    [0016] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the anti-rotation feature comprises a flange in one of the direct tension indicating washer and the base washer and a notch in the other of the washer of direct tension indication and the base washer, the flange being received in the notch to prevent rotation of the direct tension indication washer with respect to the base washer.
    [0017]
    [0018] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the anti-rotation feature comprises two tabs in one of the direct tension indication washer and the base washer and two notches in the other of the washer of direct tension indication and the base washer, the tabs being received in the notches to avoid rotation of the direct tension indication washer with respect to the base washer.
    [0019]
    [0020] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the anti-rotation feature comprises a pin in one of the direct tension indication washer and the base washer and an opening in the other of the washer of direct tension indication and the base washer, the pin received in the opening to prevent rotation of the direct tension indication washer with respect to the base washer.
    [0021]
    [0022] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the anti-rotation feature comprises two pins in one of the direct tension indication washer and the base washer and two openings in the other of the washer of direct tension indication and the base washer, the pins received in the openings to prevent the rotation of the direct tension indication washer with respect to the base washer.
    [0023] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the direct tension indication washer includes a first surface having a protuberance formed therein; a second surface that has an indentation formed opposite the protuberance; an indication material positioned in the indentation; and a channel that goes from the indentation to an outside diameter of the direct tension indication washer.
    [0024]
    [0025] In addition to one or more of the features described above, or as an alternative, other embodiments may include the base washer being a second direct tension indication washer.
    [0026]
    [0027] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the second direct tension indication washer includes: a first surface having a protuberance formed therein; a second surface that has an indentation formed opposite the protuberance; an indication material positioned in the indentation; and a channel that goes from the indentation to an outside diameter of the direct tension indication washer.
    [0028]
    [0029] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the second surface of the direct tension indication washer is positioned adjacent and oriented towards the second surface of the second direct tension indication washer .
    [0030]
    [0031] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the indentation of the direct tension indication washer is aligned with the indentation of the second direct voltage indication washer.
    [0032]
    [0033] In addition to one or more of the features described above, or as an alternative, other embodiments may include that the direct tension indication washer is calibrated for a first bolt tension and the second direct tension indication washer is calibrated for a second bolt tension
    [0034]
    [0035] In addition to one or more of the features described above, or as a alternatively, other embodiments may include that the first bolt tension is different from the second bolt tension.
    [0036]
    [0037] The technical effects of the embodiments include the use of a base washer with a direct tension indication washer to improve the emission of indication material.
    [0038]
    [0039] Brief description of the drawings
    [0040]
    [0041] With reference now to the drawings in which similar elements are numbered in the same way in the various figures:
    [0042]
    [0043] Figure 1 is a top view of a conventional direct tension indication washer;
    [0044]
    [0045] Figure 2 is a cross-sectional view of the direct tension indication washer shown in Figure 1 taken along line 2-2; Y
    [0046]
    [0047] Figures 3 and 4 are perspective views of a direct tension indication washer in one embodiment;
    [0048]
    [0049] Figures 5 and 6 are perspective views of a base washer in one embodiment;
    [0050]
    [0051] Figures 7 and 8 are perspective views of a direct voltage indication apparatus in one embodiment.
    [0052]
    [0053] Detailed description
    [0054]
    [0055] The exemplary embodiments are directed to a direct tension indication apparatus having a direct tension indication washer and a base washer. In some embodiments, the base washer is a direct tension indication washer. An anti-rotation feature is used to prevent rotation of the direct tension indication washer relative to the base washer.
    [0056]
    [0057] Figures 3 and 4 are perspective views of a direct tension indication washer 100 in one embodiment. The direct tension indication washer 100 has a flat body with a central opening 102. The direct tension indication washer 100 includes protrusions 112 formed on a first surface 114 and the corresponding indentations 116 formed on a second surface 118. The direct tension indication washer 100 includes channels 120 in the lower surface 118 leading from each indentation 116 to the outer diameter of the direct tension indication washer 100. Each indentation 116 is filled with an indication material 117. The indication material 117 may be silicone or other elastic material. When the direct tension indication washer 100 is used with a bolt, the protrusions 112 are compressed as the bolt is tensioned. When the desired bolt tension is reached, the indication material 117 emerges from the channel 120 in the outer diameter of the direct tension indication washer 100. The emission of the indication material 117 provides a visual indicator that the bolt has been correctly tensioned.
    [0058]
    [0059] The direct tension indication washer 100 can be used with a base washer 130, an example of which is shown in Figures 5 and 6. The base washer 130 has a flat body with a central opening 132, which is aligned with the central opening 102 when used with direct tension indication washer 100. The base washer 130 has a first surface 134 and a second surface 136. In use, the first surface 134 is oriented towards the second surface 118 of the direct tension indication washer 100. The direct tension indication washer 100 and the base washer 130 are used together, so that the indentations 116 are positioned on the first flat surface 134 of the base washer 130. The first surface 134 surrounds the indentation 116, and prevents the Indication material 117 travels in different directions along channel 120.
    [0060]
    [0061] The direct tension indication washer 100 and the base washer 130 include an anti-rotation feature to prevent the direct tension indication washer 100 from rotating with respect to the base washer 130. In the embodiment of Figures 3-6, the washer 100 The direct tension indication includes two notches 122 and the base washer 130 includes two tabs 138. When used together, the tabs 138 are received in the notches 122 to prevent the base washer 130 from rotating relative to the washer 100 indicating direct tension when the nut is tightened. This prevents the indication from being a stain between the base washer 130 and the direct tension indication washer 100. The embodiments are not limited to the use of two tabs 138 and two notches 122. One or more tabs 138 may be located in the washer 100 of Direct tension indication and one or more notches may be located in base washer 130, and vice versa. Tabs 138 and notches 122 are just an example of an anti-rotation feature. In other embodiments, pins and holes are used to prevent the base washer 130 from rotating with respect to the direct tension indication washer 100.
    [0062]
    [0063] Figures 7 and 8 are perspective views of a direct voltage indication apparatus 200 in another embodiment. The direct tension indication apparatus 200 includes a direct tension indication washer 210 and a base washer 230. The direct tension indication washer 210 has a flat body with a central opening 202. The direct tension indication washer 210 includes protrusions 212 formed on a first surface 214 and corresponding indentations 216 formed on a second surface 218 (Figure 8). The direct tension indication washer 210 includes channels 220 on the second surface 218 leading from each indentation 216 to the outer diameter of the direct tension indication washer 210. Each indentation 216 is filled with an indication material 217. The indication material 217 may be silicone or other elastic material. When the direct tension indication washer 210 is used with a bolt, the protrusions 112 are compressed as the bolt is tensioned. When the desired bolt tension is reached, the indication material 217 emerges from the channel 220 in the outer diameter of the direct tension indication washer 210. The emission of the indication material 217 provides a visual indicator that a predetermined bolt tension has been achieved.
    [0064]
    [0065] In the embodiment of Figures 7 and 8, the base washer 230 is also a direct tension indication washer. The direct tension indication washer 230 has a flat body with a central opening 231. The direct tension indication washer 230 includes protrusions 232 formed on a first surface 234 and the corresponding indentations 236 formed on a second surface 238 (Figure 7) . The direct tension indication washer 230 includes channels 240 on the second surface 238 leading from each indentation 236 to the outer diameter of the direct tension indication washer 230. Each indentation 236 is filled with an indication material 237. The indication material 237 may be silicone or other elastic material. When the direct tension indication washer 230 is used with a bolt, the protuberances 232 are compressed as the bolt is tensioned. When the desired bolt tension is reached, the indication material 237 emerges from the channel 240 in the outer diameter of the direct tension indication washer 230. The The emission of the indication material 237 provides a visual indicator that the bolt has been correctly tensioned.
    [0066]
    [0067] When used together as a direct tension indication apparatus, the first direct voltage indication washer 210 is oriented towards the second direct voltage indication washer 230, so that the second surface 218 faces the second surface 238. The first direct tension indication washer 210 and the second direct tension indication washer 230 include an anti-rotation feature in the form of pins 250 on the second surface 238 of the second direct tension indication washer 230 and openings 252 in the flat body of the first washer 210 for direct tension indication. The pins 250 are applied to the openings 252 to prevent the second direct tension indication washer 230 from rotating with respect to the first direct tension indication washer 210 when the bolt is tensioned. The embodiments are not limited to the use of two pins 250 and two openings 252. One or more pins 250 may be located in the direct tension indication washer 210 and one or more openings 252 may be located in the direct voltage indication washer 230, and vice versa.
    [0068]
    [0069] The direct voltage indication apparatus 200 of Figures 7 and 8 can be used in multiple ways. In a first configuration, the indentations 216 of the first direct tension indication washer 210 are not aligned with the indentations 236 of the second direct tension indication washer 230. This arrangement allows the indication material 217 to be emitted at a first bolt tension and the indication material 237 to be emitted at a second bolt tension. For example, the first direct tension indication washer 210 may be calibrated to emit the indication material 217 in the outer diameter at a tension representing a bolt pressure of 310 MPa (45 ksi), while the second indication washer 230 Direct tension can be calibrated to emit the indication material 237 in the outer diameter at a tension representing a bolt pressure of 414 MPa (60 ksi).
    [0070]
    [0071] In an alternative configuration, the indentations 216 of the first direct tension indication washer 210 are aligned with the indentations 236 of the second direct tension indication washer 230. The alignment of the indentations 216 with the indentations 236 results in more material 217 and 237 being emitted in the outside diameter at the predetermined bolt tension, which Provides high visibility blasting.
    [0072]
    [0073] The embodiments of the direct voltage indication apparatus provide a number of benefits. First, avoid any relative rotation of the direct tension indication washer with the surface immediately below it, thereby eliminating the possibility of dripping spots around the outside diameter if the rotated element induces the rotation of the indication washer of direct tension. Second, it eliminates that the unknown surface condition of the components that are clamped together negatively impacts the jet performance. Examples of this harmful condition would be rough coatings or previous bolting efforts applied to the surfaces that caused chafing. If there are significant roughnesses on the surface or irregularities of the surface, the indication material is not directed correctly towards the outer edge of the piece and instead can find rough voids to fill. Finally, it allows the direct tension indication washer to cover an irregular hole condition. For example, if a hole has a significant taper, a chamfer, rough edges or stickiness that would otherwise cause the jet mechanism to move inwards compared to outwards; The base washer allows the direct tension indication washer to operate despite these phenomena.
    [0074]
    [0075] While exemplary embodiments have been shown and described, various modifications and substitutions can be made without departing from the spirit and scope of the invention. Therefore, it should be understood that the present invention has been described by way of illustration and not limitation.
    权利要求:
    Claims (1)
    [0001]
    1. - A direct tension indication washer apparatus characterized in that it comprises:
    a direct tension indication washer;
    a base washer; Y
    an anti-rotation feature to prevent rotation of the direct tension indication washer with respect to the base washer.
    2. - The direct tension indication washer apparatus of claim 1, characterized in that:
    the anti-rotation feature comprises a flange in one of the direct tension indication washer and the base washer and a notch in the other of the direct tension indication washer and the base washer, the flange being received in the notch to prevent rotation of the direct tension indication washer with respect to the base washer.
    3. - The direct tension indication washer apparatus of claim 1, characterized in that:
    the anti-rotation feature comprises two tabs in one of the direct tension indication washer and the base washer and two notches in the other of the direct tension indication washer and the base washer, the tabs being received in the notches to prevent rotation of the direct tension indication washer with respect to the base washer.
    4 - The direct tension indication washer apparatus of claim 1, characterized in that:
    the anti-rotation feature comprises a pin in one of the direct tension indication washer and the base washer and an opening in the other of the direct tension indication washer and the base washer, received the pin in the opening for avoid rotation of the direct tension indication washer with respect to the base washer.
    5. - The direct tension indication washer apparatus of claim 1, characterized in that:
    the anti-rotation feature comprises two pins in one of the direct tension indication washer and the base washer and two openings in the other of the direct voltage indication washer and the base washer, received the pins in the openings to prevent rotation of the direct tension indication washer with respect to the base washer.
    6. - The direct tension indication washer apparatus of claim 1, characterized in that the direct tension indication washer comprises:
    a first surface that has a protuberance formed therein;
    a second surface that has an indentation formed opposite the protuberance;
    an indication material positioned in the indentation; Y
    a channel that goes from the indentation to an outside diameter of the direct tension indication washer.
    7. - The direct tension indication washer apparatus of claim 1, characterized in that:
    The base washer is a second direct tension indication washer.
    8. - The direct tension indication washer apparatus of claim 7, characterized in that the second direct voltage indication washer comprises:
    a first surface that has a protuberance formed on it;
    a second surface that has an indentation formed opposite the protuberance; an indication material positioned in the indentation; Y
    a channel that goes from the indentation to an outside diameter of the direct tension indication washer.
    9. - The direct tension indication washer apparatus of claim 8, characterized in that:
    The second surface of the direct tension indication washer is positioned adjacent and faces the second surface of the second direct tension indication washer.
    10. - The direct tension indication washer apparatus of claim 8, characterized in that:
    the indentation of the direct tension indication washer is aligned with the indentation of the second direct tension indication washer.
    11. - The direct tension indication washer apparatus of claim 8, characterized in that:
    the direct tension indication washer is calibrated for a first bolt tension and the second direct tension indication washer is calibrated for a second bolt tension.
    12. - The direct tension indication washer apparatus of claim 11, characterized in that:
    The first bolt tension is different from the second bolt tension.
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    法律状态:
    2019-10-28| BA2A| Patent application published|Ref document number: 2728719 Country of ref document: ES Kind code of ref document: A1 Effective date: 20191028 |
    优先权:
    申请号 | 申请日 | 专利标题
    US15/157,764|US10047780B2|2016-05-18|2016-05-18|Direct tension indicating apparatus|
    PCT/US2017/033018|WO2017201119A1|2016-05-18|2017-05-17|Direct tension indicating apparatus|
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