Plastic door lock assembly

Claim 1

A DOOR LOCK ASSEMBLY CONSISTING OF A PLASTIC LATCH BOLT ASSEMBLY, SAID ASSEMBLY CONSISTING OF A TUBULAR HOUSING HAVING AN INTEGRAL FACE PLATE, AN INNER TELESCOPING PLASTIC TUBULAR PART HAVING AN END CAP, AND A SPRING-BIASED LATCH BOLT MOUNTED FOR LONGITUDINAL RECIPROCATION IN SAID HOUSING AND PROJECTING THROUGH THE FACE PLATE, SAID LATCH BOLT HAVING AN INTEGRAL STEM EXTENDING REARWARDLY THROUGH THE HOUSING AND TUBULAR PART AND PROJECTING THROUGH SAID END CAP, AN INNER AND AN OUTER PLASTIC KNOB EACH HAVING AN INTEGRAL ANNULAR EXTENSION PROVIDING A NECK AND AN ARCUATE CAMMING PROJECTION, AN INNER AND AN OUTER PLASTIC ESCUTCHEON COOPERATING WITH SAID KNOBS WITH THE OUTER SECUTCHEON PROVIDED WITH AN INTEGRAL HOUSING, A PLASTIC CLOSURE PLATE FOR THE OPEN END OF THE HOUSING, SAID INNER ESCUTCHEON AFFIXED TO SAID CLOSURE PLATE AND SAID HOUSING, EACH KNOB AND ITS ESCUTCHEON JOINED BY A BREECH CONNECTION WHEN ASSEMBLED AND THE KNOB ROTATED RELATIVE TO ITS ESCUTCHEON AND THE ARCUATE CAM PROJECTIONS EXTENDING THROUGH THE ESCUTHEONS AND INTO THE HOUSING, AND A SPRING-BIASED PLASTIC RETRACTOR LOCATED IN AND RECIPROCABLE IN SAID HOUSING HAVING CAMMING SURFACES COOPERATING WITH THE ARCUATE CAMMING PROJECTIONS ON THE INNER AND OUTER KNOBS, SAID RETRACTOR BEING OPERATIVELY CONNECTED WITH THE INNER END OF SAID STEM ON THE LATCH BOLT SO THAT ROTATION OF EITHER KNOB ACTUATES SAID RETRACTOR TO RETRACT THE STEM AND LATCH BOLT.