US 4,683,523 AGranted

Deep submersible light assembly

OwnerMark S. Olsson, William H. Hagey +1inventors

InventorsMark S. Olsson, William H. Hagey, Brock J. Rosenthal

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Abstract

An elongate metal cylindrical body has a plurality of internal annular grooves for adjustable positioning of a lamp socket. A cylindrical metal sleeve screws over the forward end of the metal body. A quartz-halogen lamp extends through the forward end of the sleeve and tube and its contacts are received in corresponding receptacles in the socket. A cylindrical heat sink is screwed inside the metal sleeve and surrounds the base of the lamp, closely spaced therefrom. A relatively small protective glass envelope fits over the lamp and heat sink. The tapered rearward end of the glass envelope is held within a cavity in the forward end of the metal sleeve by a special radial seal, including an O-ring and a spiral retaining ring. The special seal also minimizes cracking of the envelope while providing a barrier to the entry of water under high pressure. A readily removable reflector assembly fits over the forward ends of the cylindrical metal body and sleeve and includes a perforated dome-shape protective cover. The rear end of the cylindrical metal body accommodates a variety of standard bulkhead electrical connectors.

Claims10

Dependent claims

A submersible light assembly, comprising:

a hollow body having at least one opening;
a lamp socket;
means for holding the lamp socket in a predetermined position within the body;
a lamp having contacts removably inserted in the socket and a bulb extending through the opening and having a base connectable with the socket;
a transparent cylindrical envelope enclosing a portion of the lamp and having a closed forward end an an open rearward end with a radially outwardly projecting shoulder, the shoulder having a flat rearward face extending perpendicular to a longitudinal axis of the envelope, a cylindrical outer surface extending forward from the rearward face, and a radially tapered outer surface forward of the cylindrical surface and decreasing in diameter moving in a forward direction;
and
means for holding the rearward end of the transparent envelope to the body including means connected to the body for defining a cylindrical cavity adjacent the opening, the rearward face of the transparent envelope being abutted against a rearward wall of the cavity, an O-ring radially seated in the cavity surrounding the cylindrical outer surface of the shoulder of the transparent envelope, and means for engaging the tapered outer surface of the shoulder and pressing the O-ring and the rearward face of the shoulder against the rearward wall of the cavity.

4 more elements

Dependencies are inferred from the claim text.