Centralizer

Information

  • Patent Grant
  • D743447
  • Patent Number
    D743,447
  • Date Filed
    Tuesday, September 30, 2014
    10 years ago
  • Date Issued
    Tuesday, November 17, 2015
    9 years ago
  • US Classifications
    Field of Search
    • US
    • D15 138-1442
    • D15 21
    • D15 123
    • 299 104-111
    • 241 207000
    • 219 137310
    • 219 13742-13744
    • 219 13761-13763
    • 219 074000
    • 219 075000
    • 166 2416-2417
    • D08 70
    • D23 213
    • D23 223
    • 239 419000
    • 239 424500
    • 239 549000
  • International Classifications
    • 1509
    • Term of Grant
      14Years
Abstract
Description


FIG. 1 is a perspective view of a centralizer connected to the tabs. The tabs extend inwards, toward one another, and the engaging rings are disposed axially-intermediate of the tabs.



FIG. 2 is an end view of the centralizer.



FIG. 3 is side view of the centralizer.



FIG. 4 is a perspective view of the centralizer disposed on an oilfield tubular (e.g., casing or drill pipe). A stop collar is disposed axially-intermediate of the engaging rings.



FIG. 5 is a side view of the centralizer, showing axially-extending seams thereof positioned circumferentially between the tabs.



FIG. 6 is an end view of the centralizer of FIG. 5, showing the radial-extension of the seams.



FIG. 7 is a side view of the centralizer, showing two of the axially-extending seams extending across the tabs.



FIG. 8 is an end view of the centralizer of FIG. 7, showing the radial-extension of the seam; and,



FIG. 9 is a side view of the centralizer, showing offset, axially-extending seams thereof. The end view of the centralizer of FIG. 9 is shown in FIG. 6.


The broken lines in the drawings depict unclaimed environmental subject matter.


Claims
  • The ornamental design for a centralizer, as shown.
US Referenced Citations (31)
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Non-Patent Literature Citations (4)
Entry
Author Unknown, Frank's International Direct, vol. 1, Issue 2, 2001, pp. 9-10.
Jean Buytaert et al., “One-Piece Centralizer with an Axial Seam and End-Collar Tabs”, U.S. Appl. No. 29/486,157, filed Mar. 26, 2014.
Jean Buytaert et al., “One-Piece Centralizer with an Axial Seam”, U.S. Appl. No. 29/486,160, filed Mar. 26, 2014.
Jean Buytaert et al., “One-Piece Centralizer with an Axial Seam and Windows”, U.S. Appl. No. 29/486,162, filed Mar. 26, 2014.