(under subclass 181) Devices in which the sealing portion of the packer or plug is maintained in laterally expanded condition after the setting means is detached by a ratchet, dog or latch other than an expanding anchor as defined in subclass 206.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123+, for packers or plugs with detachable setting means maintained in expanded condition by expanding anchor means.
198, for packers or plugs expanded by a telescoping central support, the packer or plug being locked in expanded condition.
