Door locking alarm device
OwnerDavid C. Mortoninventor
Life of this patent
Estimating the term…
Abstract
A combination door lock and alarm has an upper end clip engageable with the door handle, a shaft extending in an adjustable length tube and terminating in a non-skid rubber end adapted to engage the floor or carpet. The clip at the upper end of the shaft is angularly mounted and has its lower end lying in a plane substantially aligned with the longitudinal axis of the shaft. An alarm device is also mounted on the shaft and includes an actuator for it with a switch contact normally abutting or close to abutment with the surface of the door at a point below the door handle. Responsive to inward movement and pressure on the door the alarm will be actuated. At the same time, the locking action of the shaft and clip will divert the opening inward forces into forces directed against the floor so that the door cannot be opened.
Claims8
A door locking and alarm device for portable use and ready installation on a door handle comprising:
- an adjustable length shaft portion;
- a non-skid end portion mounted on the lower end of the shaft portion;
- a door handle engaging clip fixed to the upper end of said shaft portion and mounted on it substantially aligned to its longitudinal axis;
- and
- an alarm device mounted on said shaft portion and having an actuator therefor in abutment with the inner surface to the door when the device is in use for providing an alarm responsive to a limited movement of the door inwardly.
A door locking device for portable use and ready installation on a door knob and door knob shaft, comprising:
- an adjustable length shaft portion;
- a nonskid end portion mounted on the lower end of said shaft portion;
- a rigid clip having resilient free end portions engagable about said door knob shaft;
- said clip having a base portion connected to the upper end of said shaft portion and in substantial alignment with the longitudinal axis of said shaft, said clip base portion pivotally connected to the upper end of said shaft portion to allow storage of said device against the door surface in an inactive position.
Dependencies are inferred from the claim text.