COLLAPSIBLE EXPANSION MECHANISM FOR EFFECTING A SEAL
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 31, 2011
app pub date -
Sep 29, 2010
filing date -
Sep 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An expansion mechanism of the type that may be used with a seal for sealing a connection about the upper end of a concrete structure, such as providing as seal across a manhole frame, optionally one or more spacer rings, and the upper end of a manhole chimney or riser, or which may be used with a seal for internally sealing a connection between a pair of pipes. The expansion mechanism includes a pair of ring portions and a pair of expansion mechanisms that include pivotal connections to the ring portions such that the assembly may be moved or folded between a folded configuration, in which the assembly has a reduced profile to allow the assembly to be moved into place at the sealing site, and a deployed configuration, in which the assembly has a cylindrical shape and is expandable to compress the seal against a cylindrical surface.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully