Centralizer

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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.

Referenced Cited
U.S. Patent Documents
3209836 October 1965 Hall, Sr.
3312285 April 1967 Solum
4088186 May 9, 1978 Callihan et al.
D252398 July 17, 1979 Grimsley
5238062 August 24, 1993 Reinholdt
5566754 October 22, 1996 Stokka
5575333 November 19, 1996 Lirette et al.
6209638 April 3, 2001 Mikolajczyk
6453999 September 24, 2002 Reinholdt
6533034 March 18, 2003 Barger
6637511 October 28, 2003 Linaker
6997254 February 14, 2006 Jenner
7082997 August 1, 2006 Slack
7182131 February 27, 2007 Gremillion
7377325 May 27, 2008 Trinder et al.
7849918 December 14, 2010 Ehlinger et al.
7878241 February 1, 2011 Buytaert
8196670 June 12, 2012 Jenner
D662952 July 3, 2012 Kirk et al.
D671960 December 4, 2012 Kirk et al.
8555964 October 15, 2013 MacLeod
D696093 December 24, 2013 Mackay-Sim
D717836 November 18, 2014 Buytaert et al.
D717837 November 18, 2014 Buytaert et al.
D718342 November 25, 2014 Buytaert et al.
D731277 June 9, 2015 Manwaring et al.
20030000607 January 2, 2003 Jenner
20030230411 December 18, 2003 Richard
20090025929 January 29, 2009 Buytaert et al.
20120186828 July 26, 2012 Lively et al.
20130248207 September 26, 2013 Kirk et al.
Other references
  • 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.
Patent History
Patent number: D743447
Type: Grant
Filed: Sep 30, 2014
Date of Patent: Nov 17, 2015
Assignee: ANTELOPE TOOL & MFG. CO. (Mineral Wells, TX)
Inventors: Jesse L. Neel (Willow Park, TX), Christopher M. Penry (Weatherford, TX), Eugene Miller (Weatherford, TX)
Primary Examiner: Susan Bennett Hattan
Assistant Examiner: Brett Miller
Application Number: 29/503,945