Abstract: Fluid tanks in a hospital or similar environment include sensors to detect, e.g., state and location, which can be communicated to a central station where this data can be processed to permit predictions of resource usage and enable automated management of the fluid tanks.

Abstract: The subject device is an alarm mechanism having a voice message or other sound input wherein the mechanism incorporates a taping mechanism to receive and store voice or other audio sounds to be subsequently or simultaneously projected audibly as a signal to awaken the user of the alarm at a designated time comprising generally a caller mode coupled to a recording controller to activate an audio recorder which is in turn activated by a pre-set timer to project the recorded sound.

Abstract: An alarm system incorporates a three-position wall switch which replaces a conventional two position switch, connected in circuit with a conventional exterior light fixture. The conventional light bulb in the exterior fixture is replaced by an adapter to which is connected an alarm unit and which receives the exterior light bulb. The three-position switch operates the light bulb at one half normal intensity in its normal mode and in its alarm position illuminates the bulb at its rated intensity and at the same time activates the alarm unit. The alarm may include a strobe light and horn for providing a visual and audible alarm. The alarm unit fits within the exterior light fixture and may include an auxiliary switch to allow it to be enabled or disabled as desired, while allowing the light bulb to provide two levels of brightness.

Abstract: An alarm device comprises a bell alarm 12 and a flashing light warning means 11, both encased in a housing 13 formed of translucent material. The device of the invention incorporates both an audible and visual alarm means in a single device and electrical circuit means are provided whereby the audible alarm may be turned off after a preselected time period and the visual warning means then comes into operation. Alternatively, both the audible alarm and the visual warning alarm can both operate together initially and then, after a preselected time, the audible alarm is turned off, leaving the visual warning means in operation.The arrangement of the invention is substantially maintenance free and vandal-proof and the translucent housing permits the visual warning means to be seen therethrough, without disclosing the workings of the device.

Abstract: A portable electronic apparatus has an oscillator for generating a signal. An audible annunciator has an inductance element for generating an audible annunciating signal in response to a first actuation signal of a first frequency. A light emitting means is turned on and off by counter-electromotive forces developed in the inductance element in response to one of the first actuation signal and a second actuation signal of a second frequency. A frequency divider is coupled to the audible annunciator and to the light emitting means for frequency-dividing the oscillation signal to provide the first and second actuation signals and for selectively generating one of these actuation signals in response to a control signal.

Abstract: A traffic signal system for blind people which can be combined with an existing traffic signal device the device having a sound signal generator electrically connected to a blue light of the pedestrian traffic signal device for generating a signal representative of imitation sound synchronous with lighting of said blue light, a noise detector, a volume controller for controlling the output of the signal generator in accordance with the detected noise signal of the noise detector, a control gate for preventing the noise signal of said noise detector from being supplied to the volume controller when the generator is on, and a speaker for emitting imitation sound having a volume corresponding to the level of the surrounding noise.

Abstract: A personal security alarm including a loud speaker powered by an audio frequency signal generator to produce a siren effect and a high intensity flashlamp, both of which are activated upon operation of a remote switch and can be deactivated only by a key switch on the alarm. A generally conical transparent plastic extension from the center of the loud speaker horn encloses the flashlamp and also disperses the sound. Preferably the high voltage power for the flashlamp is derived from a transformer supplied with the audio frequency signal provided to the loud speaker.

Abstract: A resettable timer conformed as an interface assembly between a nurse call button and the wall jack therefor, including a D.C. power supply driving a timing circuit which closes a switch in parallel with the call button at the completion of a predetermined interval of time. The arrangement of this timing circuit into an interface stage received in the jack at the patients bedside requires that the nurse visit the patient in order to effect a reset. Thus the nurses call signal will remain on in an indistinguishable manner from an emergency signal, calling for response which can only be corrected by a visit to the patient's room.

Abstract: A signalling device for use in a public transportation vehicle. The signalling device includes a cord, or other device by which a passenger on the vehicle can signal the driver, and a device for generating a signal, normally a buzzer. A control circuit senses the actuation of the passenger's device and controls the energization of the signal generating device. The pattern of the signals may take any of several forms.

Abstract: Apparatus for monitoring the pressure in a gas line and providing a visual and audible indication of a high or low pressure condition, the gas line having a pressure sensor for generating high and low pressure signals, comprising a visual indicator responsive to the high pressure signal for providing a high pressure visual indication, a visual indicator responsive to the low pressure signal for providing a low pressure visual indication, a system normal visual indicator which is normally maintained in an "on" condition, an audible alarm, circuit means responsive to either of the high or low pressure signals for turning off the system normal visual indicator and for activating the audible alarm, and a manual switch for deactivating the audible alarm.

Abstract: Alarm apparatus for providing a distinctive indication of an alarm condition and comprising a visual alarm device such as a signal lamp and also an aural indication device comprising either a bell or buzzer. In response to an alarm input, an astable multivibrator is operated to a condition where it alternately provides respectively opposite outputs at its two output terminals. In response thereto, the lamp is intermittently energized to provide a flashing signal output, and the buzzer or bell is energized to provide a distinctive alarm signal. An acknowledge push button is also provided which, when actuated in response to an alarm indication, operates the astable multivibrator to a further condition in which both outputs of the multivibrator assume the same output condition, and in response to this the lamp becomes steadily energized and the bell or buzzer becomes deenergized.