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7924154 |
Security storage container having an internal alarm
A security storage container for securely retaining an item of merchandise therein. The storage container is in the form of a box having a base and a lid, with the item of merchandise being...
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7598861 |
Security storage container having an internal alarm
A security storage container for securely retaining an item of merchandise therein. The storage container is in the form of a box having a base and a lid, with the item of merchandise being...
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7561042 |
Portal barrier movement alarm
A portal barrier movement alarm includes an apparatus having (a) a first assembly adapted for attachment to the moveable portal barrier; (b) a second assembly adapted for attachment spaced apart...
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7265672 |
Magnetic sensor for a double-hung window
An apparatus and method wherein a single sensor assembly will alarm both windows of a double hung window. The single sensor assembly provides a small magnet installed in the upper window sash and a...
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7126474 |
Vending machine with remote control alarm
An electronic alarm and a vending machine equipped with the alarm monitors a plurality of zones by suitable circuitry to detect vandalism and theft. Each zone has a mechanically-triggered sensor...
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6989746 |
Alarm chip and use of the alarm chip
An alarm chip (10) and the use of the alarm chip (10) for giving warning of burglary or undesired entry into buildings, installations or structures, preferably by so-called shell-protection of the...
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6885301 |
Security system for windows
A security system for detecting and expelling external intrusions at individual windows is provided. The security system includes an intrusion detection transmission system (100) having a human...
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6778086 |
Open window security lock
An open window security lock consisting of a staff having a suction cup for attachment of the staff to the window which allows a sliding window sash to open a small amount for ventilation but not...
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6081186 |
Low-power door alarm and lock system
An electronic system of locking and alarming one or more doors such that if an attempt is made to open the door, the alarm sounds. The device is preferably installed on vehicles having multiple...
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5489045 |
Door alarm/sprayer with options
A portable anti-burglar device with optional fluid dispensing, alarm and fingerprint retention features is disclosed which when activated by the opening of a door or window or other violation of a...
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5197407 |
Security device for attachment to the rails a movable door or window
A security device in the form of a combination door or window stop comprising a housing for containing a canister of gas under pressure, a valve mechanism for releasing the gas through a sound...
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5022340 |
Portable mechanical burglar alarm
A portable mechanical burglar alarm for monitoring doors and windows includes a base plate having a back surface provided with a plurality of suction cups for releasable securement adjacent a door...
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4604609 |
Security system
A security arrangement for a closed door having an elongated member connected between the door and the wall and a tautly mounted string joining the door knob and an electrical switch on the wall,...
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4567846 |
Magnetically operated door chime
A magnetically operated door chime adapted for mounting on a door and door frame. The door chime includes a casing adapted for mounting on the door frame and having a plunger assembly mounted for...
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4522146 |
Burglar alarm system incorporating pneumatically operated components
Presented is a burglar alarm system for installation in residential, commercial or industrial premises. The burglar alarm system incorporates photographic equipment which photographs the intruder...
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4478168 |
Door brace and alarm device
A door brace alarm apparatus for resisting movement of a door and for providing a sound alarm when such movement of the door is attempted. Two slideably connected shaft members are adjustable for...
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4414912 |
Burglar alarm
The invention is an improved burglar alarm for doors and windows or other similar openings in an enclosure to be protected against secretive entry. The invention consists of a series or plurality...
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4370644 |
Alarm device for a door, automatically switched off during a licit access
An alarm device for doors having in series an electric supply, such as batteries, three switches and a relay. The relay is locked upon the simultaneous closing of the three switches and actuates an...
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4311225 |
Device for driving driven member by roller chain
A door member such as a garage door is driven by a motor through a roller chain having a finite length to travel in the garage opening and closing directions. The roller chain is driven by a single...
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4284980 |
Door burglar alarm system
A door burglar alarm system having, preferably, a door movement intercepting component which may be moved easily in the direction of door movement by an opening motion of a door and which may be...
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4205305 |
Burglar alarm
A burglar alarm provided with a housing which contains a bell assembly and a battery compartment connected in series with a switch assembly having a linearly movable element which can be displaced...
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4194461 |
Door alarm toy
A door alarm toy comprising a whistle adapted to be sounded by air escaping from an inflated balloon; and a clip adapted for engagement between a door and its door frame to hang the toy with an...
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4193067 |
Closure operated burglar alarm
A burglar alarm is disclosed which detects the unauthorized opening of a door or window. The device has a longitudinally adjustable rod which extends between the burglar alarm and the moveable...
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4166428 |
Intruder alarm
An intruder alarm security device includes a source of fluid under pressure which serves as a medium for oscillating a diaphragm at the throat of a horn to create an audible warning signal. The...
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4067289 |
Portable mechanical alarm for doors, windows and the like
A portable alarm useful for indicating unauthorized entry at doors and windows includes a housing and a bell casing mounted in the housing with a clacker arm rotatably mounted within the casing and...
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4062314 |
Magnetically operated warning device
A signaling device for use with a closure which is movably mounted within a frame having a housing, and a vibratile member mounted on the housing. A striker pin is mounted on the housing. A biasing...
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4050402 |
Burglar alarm for doors
A warning device to discourage the unauthorized entering of doors and windows utilizing a spring contracted bellows held in an extended condition by anchor means associated with building closure...
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4040381 |
Visual burglar alarm
A visual burglar alarm in the form of a mechanism for indicating that a door has been opened at least once during the absence of the occupant and therefore that caution should be exercised by the...
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4034697 |
Fire extinguisher cabinet
A fire extinguisher cabinet protectively encloses a fire extinguisher of the portable type and provides a transparent movable access panel through which the fire extinguisher may be readily seen....
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4024830 |
Anti-burglar sound emitting device
An anti-burglar sound emitting device is described in which a pressurized fluid is discharged to audibly oscillate a diaphragm to create a warning signal when an intruder opens a window or a door...
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3968485 |
Burglar warning device
A twine or cord is stretched across an entrance and secured at one end to one side of the entrance and at the other end linked loosely to an electric light switch near the other side of the...
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3967757 |
Anti-burglary irritant spraying device
A chemical dispensing anti-burglary device is described in which a chemical irritant such as tear gas is discharged into the area to be protected when an intruder opens a window or opens a door or...
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3957013 |
Portable event detecting alarm
A portable alarm is described wherein an alarm indication is obtained from remotely accessible areas. A flexible alarm event sensor is placed in the area sought to be protected. Incremental...
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3929259 |
Chemical dispensing anti-burglar device
A chemical dispensing anti-burglar device is disclosed in which a chemical such as tear gas is discharged into the area to be protected when an intruder opens a window or a door or forces open a...
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3921563 |
Pneumatic alarm system
A pneumatic alarm system in which a single source of gas under pressure is connected to one side of a balanced regulator valve while a plurality of rupturable sensors are connected by a manifold to...
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3921564 |
Portable burglar alarm
A portable burglar alarm having a housing containing a bell and a spring driven motor. The alarm also has an elongated supporting mechanism connected to the housing and operatively coupled to the...
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3899105 |
Chemical irritant spray device
A chemical irritant spraying anti-burglary device is disclosed in which a chemical irritant such as tear gas is discharged into the area to be protected when an intruder opens a door or forces open...
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3804053 |
COMBINATION STOP AND ALARM
A security device in the form of a combination alarm and door or window stop is constituted by a container of pressurized gas combined with a sound generator and suitable mounting means so that the...
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3797005 |
BAR LOCK FOR SLIDING DOORS
Apparatus for locking sliding doors including an alarm which will indicate the presence of an unauthorized person when the sliding door is being forced. The apparatus includes a telescoping bar...
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3780692 |
ALARM DEVICE
An alarm device having an open-ended compressed gas container means with a connection member adjacent the open end thereof; a whistle which extends across the container means adjacent to its open...
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3732843 |
INTRUSION ALARM
Alarm apparatus includes a can which has a valve and contains pressurized gas and is mounted on a support. A horn is mounted on said can. A cover is releasably mounted on the can. Spring means...
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3690286 |
HAIR TRIGGER BURGLAR ALARM
A burglar alarm for detecting the unauthorized opening of a door or window in a building comprises a unitary, compact structure for attachment of the alarm with an actuating cable or chain...
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3636484 |
SPRINGLESS SWITCH CONSTRUCTIONS FOR USE IN THE PROTECTIVE CIRCUIT OF BURGLAR ALARM SYSTEMS
A conductive permanent magnet structure fixed on the frame of a protected opening, attracts into contact with itself, a conductive loosely slidable armature having limited movement on the closure...
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3618557 |
SELF-ENERGIZING BURGLAR ALARM
A self-energizing alarm, particularly suitable as a burglar alarm, consisting of an elongated flexible bellows having attachment means at each end, and an audible signal-producing reed...
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3561395 |
BURGLAR ALARM FOR VENDING MACHINE
A burglar alarm for vending machines comprising a reinforced door assembly to protect the coin collection box, a key operated tumbler lock for securing the door assembly in flush position upon the...
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3714922 |
LOCK AND ALARM
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3451369 |
VENDING MACHINE ALARM
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3410245 |
Alarm device
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3214857 |
Burglar alarm unit
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3185127 |
Alarm system
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