USPatentGranted
S1

Centralizer

Granted 17 Nov 2015 · no office action yet

Application
29/503,945
filed 30 Sep 2014
Publication
Not published
not published
Patent· this page
US D743447
granted 17 Nov 2015

Life of the patent

2 dated events
⤢ drag to zoomOct 2014Jan 2015Apr 2015Jul 2015Oct 2015Jan 2016Prosecution
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Description

1 parts
›FIG. 1 is a perspective view of a…

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.

the grant prints no section headings; every part label below is ours, taken from that part's own first words

Claims

1 · 1 independent · depth 1
1 granted claims

Classifications

1 codes
USPC · US Patent Classification
D15/21

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File wrapper

Pendency
1.1 y
413 days filing → grant
Office actions
0
none on record
Examiner
Susan Bennett Hattan
art unit —
Citations: 35 back · 0 forward

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Chain of title

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Citations

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