Abstract: A portable security device adapted to be removably mounted on the top edge of an inwardly swinging door whereby opening of the door will automatically actuate a battery-operated alarm. The alarm includes an audible buzzer, the battery, a manual set switch, an actuation lever and associated wiring electrically connecting said components. The actuation lever is formed of spring steel and projects outwardly from a housing containing the alarm components and is biased to the alarm ON position. The lever is moved to the alarm OFF position by contact with the door frame when the door is in the closed position. Upon inward movement of the door by an intruder the lever is urged by its bias to the alarm ON position thereby actuating the alarm. A lock-in circuit may be incorporated into the main electrical circuitry of the alarm to prevent deactivation of the alarm even if the actuation lever or the set switch is moved to the alarm OFF position.

Abstract: A portable security device adapted to be removably mounted on a door frame adjacent the inside of an inwardly swinging door to prevent the opening of the door and actuate an alarm when forcible entry is attempted. A steel rod is embedded within a rigid housing and extends outwardly from an end wall of the housing. The rod is removably inserted into a complementary-shaped hole in the door frame. The housing has an angled wall extending downwardly toward the rod and forms an exterior angle of between 120.degree. and 165.degree. therebetween. The angled wall lies in abutting relationship with the inside surface of the door blocking the opening of the door. A battery-operated alarm is contained within the housing and has a control button that projects outwardly through a hole in the angled wall and engages the door for actuating an alarm switch. The angled wall may be covered with a sheet of resilient material with the switch button extending a short distance beyond the outer surface of the resilient sheet.

Abstract: A portable door lock is removably mounted on the inside of an inwardly swinging door to prevent the opening of the door to provide added security for the inhabitants of a dwelling. The door lock includes a solid block of material, such as wood, and has a plurality of steel rods embedded therein and extending outwardly from an end surface of the block. The block has a flat planar surface extending downwardly toward the rods and forming an exterior angle of approximately 150.degree. therebetween. A plurality of complementary-shaped holes are drilled in the door frame and extend inwardly and away from the door at a predetermined angle whereby the planar block surface lies in abutting relationship with the inside door surface when the rods are inserted into the holes to prevent opening of the door. Plastic sleeves are mounted in the outer exposed ends of the holes to provide an attractive appearance thereto.

Abstract: An improved door alarm which is mounted on the inside of a door adjacent the hinged edge thereof sounds an audible alarm when the door is opened. A housing containing a buzzer and a battery is mounted on the door by a pressure-sensitive adhesive. An arming lever is pivotally mounted on the housing and together with a conductor extends outwardly therefrom and operatively engages an actuator block which is mounted on the door frame adjacent the alarm housing. The lever and conductor are operatively connected with the battery and buzzer to form an alarm circuit which will actuate the buzzer when brought into contact with each other at the actuator block. The actuator block has an insulated shelf with which a hooked end of the arming lever is engaged when the alarm is armed and an alarm actuating zone wherein the lever end disengages the shelf and engages an end of the conductor located therein to complete the alarm circuit and actuate the buzzer.