Wellhead protector

Wells – Processes – Assembling well part

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C166S241100, C384S024000

Reexamination Certificate

active

07121349

ABSTRACT:
A centralizer is located in a passage of a tubular body of a wellhead assembly for centralizing well tools lowered through the passage. Centralizing members have outer ends mounted to axially extending stationary hinge members, which are mounted to the tubular body in a circular array around a circumference of the passage. A cam and a slot are located between the outer end of each of the centralizing members and the stationary hinge member. Each of the slots has an upward inclined portion, a downward inclined portion, and a neutral position located between the upward and downward inclined portions. A spring urges the cam and the slot to the neutral position, which orients the centralizing members radially inward.

REFERENCES:
patent: 1485308 (1924-02-01), Stegeman
patent: 2365681 (1944-12-01), Gartin
patent: 2365682 (1944-12-01), Curtis et al.
patent: 4326756 (1982-04-01), Moroz et al.
patent: 4505614 (1985-03-01), Anschutz
patent: 6615921 (2003-09-01), Whitelaw et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Wellhead protector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wellhead protector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wellhead protector will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3641112

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.