Message door lock apparatus

Details Message door lock apparatus Message door lock apparatus

1991-08-19

1993-08-31

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

360 12, 365244, G11B 500

Patent

active

052414272

ABSTRACT:
A message door lock includes a trigger switch for trigging a playing operation of a recorder and player operatively recorded for leaving a message in the recorder formed on a door lock, an actuator of the trigger switch mounted on a thumbturn or doorlock spindle having an insulator flange normally interrupting the trigger switch from a circuit of the recorder and player and having a pair of notches diagonally recessed in the flange, whereby upon a rotation of the thumbturn inside a door or unlocking the doorlock outside the door, the flange of the actuator is rotated to match the notch in the flange with the trigger switch for resiliently contacting the trigger switch with the contact of the recorder and player circuit for playing the message already recorded in the recorder whenever rotating the thumbturn or unlocking the doorlock for a convenient and safe messaging purpose.

REFERENCES:
patent: 4100581 (1978-07-01), Slack et al.
patent: 4654728 (1987-03-01), Lunsford
patent: 4715060 (1987-12-01), Lipscher et al.
patent: 4763111 (1988-08-01), Matsuo et al.

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