Musical door lock

Details Musical door lock Musical door lock

1994-09-27

1996-10-15

Gall, Lloyd A.

Locks

Miscellaneous

70432, 70448, 70DIG49, 340328, E05B 902

Patent

active

055642942

ABSTRACT:
A musical door lock comprises a generally rectangular housing having enclosed therein door lock, an electric door bell and a battery chamber. When a push-button on the outer periphery is pressed to actuate a sound generator inside the housing, the combined electric door bell will release a musical melody or the sound of bird chirps inside the door. A second example provides a frequency regulator instead of a sound generator incorporated with a movable wireless door bell that offers more convenience to the house owners. In addition an anti-burglar device combine with the lock mechanism for releasing a warning signal which may be received by a portable radio receiver. This disclosure is characteristically providing an economical utility of space in a door lock as well as its variety of functions.

REFERENCES:
patent: 2295482 (1942-09-01), Kemp
patent: 3704460 (1972-11-01), Frank
patent: 3714643 (1973-01-01), Sosin et al.
patent: 4196422 (1980-04-01), Swigert et al.
patent: 4633232 (1986-12-01), Nelson et al.
patent: 4852922 (1989-08-01), Shih
patent: 4981314 (1991-01-01), Carr
patent: 5027629 (1991-07-01), Liu
patent: 5311168 (1994-05-01), Pease, Jr. et al.
patent: 5365214 (1994-11-01), Angott et al.

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