Patent ID: 8007300

Claim:
In combination with a fluorescent lamp having an end provided with a pair of projecting, parallel, and spaced contact pins, a lamp holder comprising: a housing formed with an outwardly open housing mouth; a rotor rotatable in the housing adjacent the mouth about an axis and having a diametrally throughgoing rotor slot, the rotor being rotatable between an installation position with the rotor slot aligned with the mouth and an angularly offset contact position with the slot not aligned with the mouth, the rotor and housing being so dimensioned as to receive the pins extending parallel to the axis and to move the pins in a circular orbit centered on the axis on rotation of the rotor in the housing; spring contacts in the housing diametrally flanking the axis and having contact parts angularly offset from the slot in the installation position of the rotor; and respective cam formations on the rotor engaging the contacts, holding the contact parts radially outside the orbit except in the contact and installation positions, and urging the rotor angularly into the contact and installation positions.