Expansion ring assembly

Details Expansion ring assembly Expansion ring assembly

2006-12-12

2006-12-12

Brittain, James R. (Department: 3677)

Buckles, buttons, clasps, etc.

Bale and package ties, hose clamps

With tighteners

Reexamination Certificate

active

07146689

ABSTRACT:
An expansion ring assembly for sealing a gasket with respect to an annular wall of a rigid structure. The expansion ring assembly includes a drive mechanism for engaging and driving apart the opposing ends of an expansion ring to thereby radially expand the ring. The drive mechanism generally includes a pair of block members, formed of steel or a rigid plastic, for example, having oppositely threaded bores therethrough, and a bolt having oppositely threaded ends which are threaded within respective threaded bores of the block members. The block members are interlockingly engaged with respective opposite ends of the expansion ring. Rotation of the bolt in a first direction simultaneously drives the block members apart from one another along the bolt to radially expand the expansion ring, and rotation of the bolt in a an opposite, second direction simultaneously drives the block members toward one another along the bolt to allow the expansion ring to radially contract.

REFERENCES:
patent: 4097171 (1978-06-01), Fier
patent: 4281944 (1981-08-01), Bowman
patent: 4469467 (1984-09-01), Odill et al.
patent: 4872780 (1989-10-01), Bowman
patent: 4927290 (1990-05-01), Bowman
patent: 5044822 (1991-09-01), Moss
patent: 5209601 (1993-05-01), Odill et al.
patent: RE34550 (1994-02-01), Bowman
patent: 5316407 (1994-05-01), Miller
patent: 5431459 (1995-07-01), Gundy
patent: 5474396 (1995-12-01), Bravo
patent: 5496128 (1996-03-01), Odill
patent: 5529312 (1996-06-01), Skinner et al.
patent: 5876039 (1999-03-01), Skinner et al.
patent: 5954344 (1999-09-01), Miller
patent: 6805359 (2004-10-01), Neuhaus et al.
patent: 2002/0104208 (2002-08-01), Kurdziel et al.
patent: 2002/0153668 (2002-10-01), Deeb et al.
patent: 2769111 (1998-10-01), None
“Flexible Connectors in Storm Sewers Save Money for Vermont Towns”, reprinted from PublicWorks, Jul. 1999.

Affiliated with

Also associated with

Rating

Expansion ring assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3696205