Greenblum & Bernstein P.L.C.
Lamp socket
 A lamp socket for supporting an HID lamp includes a hollow casing having a lamp mounting opening defined at one end and the opposite end closed; an electrode carrier member disposed inside the casing; a center electrode disposedon the electrode carrier member at a location coaxial with an axis perpendicular to a plane of the lamp mounting opening and engageable with a center contact point in a mouthpiece of a lamp to be received in the lamp socket; a peripheral electrode disposed on the electrode carrier member at a location offset laterally from the center electrode and also from the axis for engagement a peripheral contact point in the mouthpiece of the lamp; an electrode shielding member disposed within the casing for movement between projected and retracted positions; and a coil spring for biasing the electrode shielding member to the projected position and operable to permit the electrode shielding member to move towards the retracted position against a biasing force thereof in response to insertion of the lamp mouthpiece into the lamp mounting opening. The electrode shielding member when in the retracted position permits the center and peripheral electrodes to be electrically engaged with the center and peripheral contact points in the lamp mouthpiece when the electrode shielding member is moved to the retracted position, but the electrode shielding member when in the projected position substantially conceals the center and peripheral electrodes. 
Matsushita Electric Works, Ltd.
H H
H01R H01R
inventional inventional
Hideki Haruo Yasuhiro Masaaki Tomoyuki Nobuo
Hamada Nagase Kimura Ichikawa Ono Kato