(under subclass 118) Devices in which there is a friction means as defined in subclass 241 and a wedge or cam means engageable with the anchor means in order to move it outwardly.
(1) Note. The friction means may be identical with the anchor means if the device is constructed so that the anchor frictionally resists movement when in the unexpanded condition in order to enable setting of the device.
(2) Note. The friction means may be a packer or plug sealing means if this sealing means is used like a friction drag to set the anchor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
121, for packers or plugs and expanding anchors set by fluid pressure wherein fluid pressure acting on a cup type packer seal may cause it to act in a manner similar to a friction drag when setting the expanding anchor.
129+, for devices as defined in this subclass in which there is also a controllable bypass outside of a central conduit supporting the packer or plug.
