Casing centralizer having spiral blades

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Description

FIG. 1 is a perspective view of a casing centralizer showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view.

The broken lines showing a cylinder are included for the purposes of illustrating only and form no part of the claimed design.

Claims

The ornamental design of casing centralizer having spiral blades, substantially as shown and described.

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Other references
  • Amended Order, Top-Co Inc., et al v. Summit Energy Services, Inc. dba Summit Casing Equipment, US District Court, Southern District of Texas, Houston Division, Alfred H. Bennett, US District Judge, Civil Action No. 4:13-CV-445, 8 pages Mar. 8, 2016.
  • Halliburton; Casing Attachments, 2009, pp. 12-2 to 12-25 Dec. 31, 2009.
  • Ray Oil Tool Co.; The Centralization Specialists, Brochure, 36 pages Feb. 2, 2004.
  • Top-Co Inc., et al v. Summit Energy Services, Inc., US District Court, Southern Dist of Texas, Houston Div, Civil Action No. 4:13-cv-00445, Defendant's Response to Infringement Contentions Jun. 18, 2013.
  • Top-Co Inc., et al v. Summit Energy Services, Inc., US District Court, Southern Dist of Texas, Houston Div, Civil Action No. 4:13-cv-00445, Original Complaint Feb. 19, 2013.
  • Plaintiffs' Brief on Claim Construction, Top-Co Inc., et al v. Summit Energy Services, Inc., et al., US District Court, Southern District of Texas, Houston Division, Civil Action No. 4:13-ev-00445, Exhibit A (U.S. Pat. No. D664,568), 27 pages Jul. 10, 2013.
  • Top-Co LP, Casing Accessories, Top-Co Type 346 Top Reach Glider, Top-Co_268, Exhibit 4, 1 page Jul. 16, 2013.
  • Top-Co LP, Casing Accessories, Top-Co Type 346 Top Reach Glider, Top-Co_188, Exhibit 6, 1 page Jul. 16, 2013.
  • Top-Co LP, Casing Accessories, Top-Co Type 346 Top Reach Glider, Top-Co_192, Exhibit 7, 1 page Jul. 16, 2013.
  • Top-Co LP, Casing Accessories, Top-Co Type 346 Top-Reach Glider, Top-Co_269, Exhbiit 8, 1 page Jul. 16, 2013.
  • Top-Co Tech News, Top-Co Type 34 Top-Reach Glider, Top-Co_316-325, Exhibit 9, 10 pages Jul. 16, 2013.
  • Defendant Summit Energy Services, Inc.'s D/B/A Summit Casing Equipment's Response to Plaintiffs' Brief on Claim Construction, Top-Co Inc., et al v. Summit Energy Services, Inc., US District Court, Civil Action No. 4:13-cv-00445, 29 pages Jul. 23, 2013.
  • Photographs A-D are photographs of casing centralizers that are believed to be commercially available prior to Applicant's priority filing date. Applicant is presently attempting to determine the actual dates of commercial availability, publication, etc. (relevant dates) for the casing centralizers illustrated.
Patent History
Patent number: D849800
Type: Grant
Filed: Aug 12, 2015
Date of Patent: May 28, 2019
Assignee: SUMMIT ENERGY SERVICES, INC. (Fort Worth, TX)
Inventors: Mitchel D. Hansen (Aledo, TX), Andrew M. Eldridge (Fort Worth, TX)
Primary Examiner: Mark A Goodwin
Application Number: 29/536,008