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4968973 |
Anti-theft device
An anti-theft device for attachment to an object has an alarm generator for emitting an audible alarm in response to an alarm signal and a motion sensor for initiating the alarm signal in response...
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4963854 |
Light bulb shaped audio signal emitter
This light bulb shaped device is comprised of a one hundred and ten volt buzzer wired to a threaded light bulb type metal base. The sound from this buzzer is amplified by an unbreakable plastic...
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4931765 |
Unitized housing for silent and tone pager alerting system
A housing for an alerting system within a selective call radio receiver exhibits substantial space saving characteristics by incorporating both a low profile vibrator motor for silent alerting and...
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4929093 |
Fire detector having a protective cover
A fire detector for detecting a fire occurrence, including a temperature sensor comprising a thermistor or, a platinum wire, a protective cover enclosing the temperature sensor and protecting the...
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4841285 |
Tilt-responsive display case alarm
An alarm adapted for mounting in an interior corner portion of a display case has an L-shaped housing which encloses a battery, an audible alarm, a mercury activation switch and an enable/disable...
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4823118 |
Fire sensor
A fire sensor of the polling type in which plural fire sensors connected via a common line to a central monitoring point are called in sequence in accordance with individual addresses, wherein an...
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4812827 |
Detector and light assembly
The detector assembly combines an electrically powered detector and alarm and an electrical light into a single unit which is removably attachable to a conventional electrical receptacle. The unit...
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4803473 |
Transmitter cover
A display case for receiving a transmitter module and retaining the module in place is used in a security system which detects and monitors fire, burglary, emergencies, appliance failure and the...
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4800371 |
Freeze alarm
An apparatus for protecting pipes subjected to freezing temperatures. An electric circuit is provided with a switch that senses the ambient air temperature in the vicinity of a pipe to be tested....
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4794379 |
Automatic alarm device for dripping injection fluid bottle
An automatic alarm device for dripping injection fluid bottle, which is installed in the bottle neck portion, and it comprises of a case body, a buoyant power switching device, a buzzer, and a...
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4695829 |
Temperature level indicating device and method of making the same
A device for indicating that a sensed temperature has reached a certain selected level and method of making the same are provided, the device comprising a housing carrying an electrical switch unit...
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4694281 |
Visual alarm apparatus
A lighting device for a room environment, in a form of a table, ceiling or swag unitary fixture, provides primary illumination for general living and working activities within the space of a room,...
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4679037 |
Attachment for smoke alarms
An attachment is provided which can be retrofitted to conventional smoke alarms to make it possible to deactivate the smoke alarm in order to avoid operation of the alarm as a result of...
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4663611 |
Alarm lock
This invention is an alarm lock which uses a key-releasable cable to secure an article to be protected to a fixed object. Should the cable be cut, a coded audio alarm is emitted, alerting the owner...
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4644328 |
Buoyant alarm device
An improved buoyant alarm device which provides an indication of a disturbance to a quiescent level of a body of water. The device includes a cover assembly and a buoyant body. The cover assembly...
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4594582 |
Floating alarm unit for pool or spa
A pool alarm includes a float body, a hollow container received in the hollow body; and tilt sensing mechanism in the hollow container to be placed in alarm mode when a water wave tilts the body.
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4578586 |
Chemical agent monitor and alarm device
The specification describes a case for use with a hand-portable chemical agent detector for continuously monitoring an atmosphere for the presence of predetermined chemical agents. The detector...
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4565673 |
Process for eluting indium from a chelate resin containing adsorbed indium
A process for eluting indium from a chelate resin having a phosphorus atom-containing, chelate-forming group which contains adsorbed indium, which comprises contacting said resin firstly with a...
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4462023 |
Personal property alarm
A position sensitive alarm is mounted to an item of personal property to be protected so that if the property is moved, an audible alarm is produced. The alarm includes a housing in which a...
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4427975 |
Unopened-door indicator
An electric indicator that includes an indicating light mounted in a small case containing electronic circuitry, a numerical keyboard, and a battery, the case being attached to a door or door...
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4361834 |
Safety alarm device
A self-contained, portable, safety alarm device adapted to be worn on a user's hand for providing an alert signal when, through drowsiness or otherwise, the user's hand relaxes. The device includes...
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4358760 |
Portable fire alarm apparatus
There is disclosed a portable fire alarm apparatus which comprises a foldable housing consisting of a base assembly having a surface for resting upon a horizontal plane. A central section is...
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4335377 |
Medical alert alarm
A medical alert alarm is provided to enable an individual having a medical problem in the nature of a heart condition to alert bystanders of an impending attack. The alarm includes a compartment...
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4333094 |
Swimming pool alarm
A free-floating self-contained swimming pool alarm unit in which a hollow housing forms a float structure having an internal chamber within which an audible alarm device is mounted adjacent sound...
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4325060 |
Floating water detector
A moisture detector comprises a shell adapted to float with an anode and cathode on the bottom portion thereof. The anode may be of sacrificial metal which is electrolyzed to increase the...
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4284982 |
Battery operated personal alarm
A battery operated personal alarm having a withdrawable actuating pin extending from the case thereof is provided with a multi-purpose handle attached to the exterior of the case, permitting...
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4272765 |
Microwave leakage detectors
This invention relates to a microwave leakage detector of the kind suitable for use in a domestic environment for testing leakage from appliances such as microwave ovens by moving the detector...
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4209776 |
Vibratory and ultrasonic fence intruder detection system
A fence surveillance and security system includes a plurality of sections of relatively rigid electrical conduit which are supported by a fence. A plurality of housings are provided at spaced...
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4178592 |
Fire alarm having a sensor on an extensible arm
A smoke and fire sensitive alarm system designed for portable operation all electronics, power supply and alarm in a single, compact unit which may be placed on any surface. The sensing portion of...
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4148019 |
Security alarm transmission system
A security alarm transmission system for protecting a building includes a plurality of alarm transmitter units each having a transmitter circuit controlled by associated condition sensors to...
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4075614 |
Christmas tree fire detector and alarm
A fire detector and alarm is provided with means to mount it on a Christmas tree so as to be activated by the rapid buildup and intense heat of a Christmas tree fire. The power may be derived from...
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4059830 |
Sleep alarm device
In at least one embodiment, a sleep inhibiting device comprises a plurality of ring-like, metallic contacting devices worn on adjacent fingers of a human hand. The contacting devices close an...
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4054867 |
Detecting damage to bulk material
Damage to sheet glass is detected by monitoring with a piezo-electric sensor vibrations at ultrasonic frequencies propagated in the glass. Cutting, scoring or chipping of glass generates a...
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3840870 |
PNEUMATIC CUP ALARM DEVICE
An alarm system includes a suction cup or pressure ball which is compressed, for example by closing a part of a door hinge against it or by application to it or an article to be held by it such as...
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3009252 |
Apparatus for accurately measuring or checking dimensions or physical magnitudes
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2974210 |
Fire detector
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2909631 |
Fire alarm
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