“Corrugated thick-walled pipe for use in wellbores”
Abrasion resisting flexible joint pipe
Adjustable tubular wall structure for connectors and the like
Adjustable tubular wall structure for connectors and the like
Air transfer system
Apparatus for connecting a branch duct to another duct
Apparatus for preventing generation of fugitive emissions at a d
Apparatus for the flexible connection of pipes in exhaust lines
Arrangement for joining tubular duct sections
Arrangement for making a spigot-and-socket joint secure from sli
Arrangement in rain-water drains or manholes
Articulated tube connection, in particular for the exhaust pipew
Ball joint
Ball joint apparatus and method of fabrication
Band with slotted wedge cams
Bearing seal for universal ball joint
Bellows for a compensator and compensator pertaining thereto...
Bellows for connecting hoses or apparatus for operation in a vac
Bellows sealed ball joint
Bellows with rotational joints