Illumination – Light source and modifier – With sealing means or artificial atmosphere
Patent
1977-03-01
1979-05-29
Shoop, William M.
Illumination
Light source and modifier
With sealing means or artificial atmosphere
362457, F21V 3100
Patent
active
041568940
ABSTRACT:
A light fitting for underwater use is of reduced size and is structured to provide easy and ready replacement of the fitting lamp. The fitting includes a housing, a disc-shaped backing plate mounted to the housing and a lens sealingly connected to the backing plate and forming therewith an enclosed chamber. A gland housing is sealingly connected in the backing plate and forms an enclosed chamber opening. An electrical connector which supports the fitting lamp is dimensioned for passing through the gland housing and is connectable to electrical power for powering the lamp by a cable which also extends into the gland housing. A seal bushing surrounds the cable within the gland housing and provides a tight seal between the cable and gland housing when acted upon by a nut which also surrounds the cable and which threadingly engages the gland housing. Ready removal of the lamp for replacement is provided by removing the nut from the gland housing and pulling the cable and the lamp through the gland housing.
REFERENCES:
patent: 486729 (1892-11-01), Miller
patent: 2707747 (1955-05-01), De Frees
patent: 2935601 (1960-05-01), Steiner et al.
patent: 3244869 (1966-04-01), Buck
patent: 3474243 (1969-10-01), Miller
patent: 3636341 (1972-01-01), Miller
patent: 3949212 (1976-04-01), Larrimore
patent: 3949213 (1976-04-01), Pritchell
Dega Proprietary Limited
Shoop William M.
Wong Peter S.
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