Nut type raintight threadless couplings & connectors for electrical conduits

A raintight, threadless coupling for joining electrical conduits end- to-end comprising:

• a cylindrical housing means with a bore operable to receive the un-threaded ends of electrical conduits in its opposite ends, such bore having a central stop means therein operable to limit the ingress of said ends of said electrical conduits into said housing means when such conduits are inserted into said coupling;
• threaded means disposed at each end of said cylindrical housing means;
• shoulder means formed at each end of said cylindrical housing means;
• a compression ring means at each end of said coupling operable to slip over ends of said conduits being joined by said coupling, each said compression ring having a solid ring portion and a series of segmented projections projecting axially from said solid ring portion, said projections tapering from the inner diameter of said compression ring means to the OD of said solid ring;
• sealing means located between each of said solid rings of said compression ring means and said shoulder means operable to seal a conduit in said housing means when compressed;
• and
• nut means with apertures to slip over conduits being joined at each end of said coupling, said nut means operable to screw onto said threads at said ends of said housing means to drive the associated solid ring of each compression means against said associated shoulder means and compress said associated sealing means between a conduit in said coupling to effect a seal there between and to drive said series of segmented projections of each of said compressing ring means radially against its associated conduit to fix such associated conduit in said coupling.

A raintight, threadless connector for joining electrical conduits to junction boxes comprising

• a cylindrical housing means having a bore operable to receive the un-threaded end of a electrical conduit one of its ends, said housing means having central stop means in such bore operable to limit the progress of said electrical conduit into said housing means when such a conduit is inserted into said connector;
• threaded means disposed at the end of said cylindrical housing means adapted to receive such conduit and a hollow threaded boss extending from the opposite end of said housing adapted to be received in a junction box extending from its opposite end;
• shoulder means formed at such bore in said cylindrical housing means;
• a compression ring means operable to slip over the end of such conduit being joined with said connector, said compression ring having a solid ring on one side operable to engage said shoulder means and on the other side a series of segmented projections tapering from its inner diameter of said compression ring means to the OD said solid ring thereof;
• sealing means between said solid ring of said compression ring means and said shoulder in said connector operable to seal a conduit in said housing in a raintight joint;
• nut means with an aperture to slip over said conduit being joined to said connector, said nut means operable to screw onto said threads at said end of said housing means to advance said nut means against said series of said segmented projections of said compressing ring means to drive said solid ring of said compression ring means against said shoulder means and compress said sealing means and wedge said projections against an associated conduit in said housing means to fix the associated conduit in said connector.