Electrical conduit coupling with lubrication fitting

Details Electrical conduit coupling with lubrication fitting Electrical conduit coupling with lubrication fitting

1995-02-16

1996-10-01

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285 94, 285120, 285179, 285341, 285383, 285906, 285915, 285423, 184 152, 2541343FT, 405154, F16L 3500

Patent

active

055606555

ABSTRACT:
The present electrical conduit coupling includes an electrical conduit coupling 10 and a lubrication fitting 11 thereon. The coupling includes a hollow body 12 including an external surface 13 and an internal surface 14. The internal surface defines a central bore 15 extending between first and second open ends 17, 19 that are adapted to receive conduit ends. A thickness dimension exists through the hollow body between the internal and exterior surfaces 13, 14. The lubrication fitting 11 is provided on the hollow body 12 between the first and second ends 17, 19. The fitting 11 extends at least partially through the thickness dimension to communicate with the central bore 15. The lubrication fitting 11 includes an internal one way valve 31 that permits injection of a lubricant into the central bore 15 but automatically closes to prevent reverse flow of lubricant outwardly through the fitting 11.

REFERENCES:
patent: 1800085 (1931-04-01), Kroeger et al.
patent: 1889868 (1932-12-01), Montgomery
patent: 2135320 (1938-11-01), Bovard
patent: 2146100 (1939-02-01), Walch
patent: 2448232 (1948-08-01), Muse
patent: 2735699 (1956-02-01), Chadbourne
patent: 3459156 (1969-08-01), Harter
patent: 3565213 (1971-02-01), Heller
patent: 3605947 (1971-09-01), Salerno et al.
patent: 4331322 (1982-05-01), Woodruff
patent: 4569420 (1986-02-01), Pickett
patent: 4573715 (1986-03-01), Armbruster
patent: 4688762 (1987-08-01), DeBeradinis

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