Class 340/615 - Moving sensor (e.g., impeller)

Subclass of Class 340 - Communications: electrical
Definition: Subject matter wherein the presence or absence of material
No. of patents: 19
Last issue date: 01/09/2007

Number	Title	Issue Date
7161492	Mechanical self-cleaning probe via a jiggler A device, having a container for holding a fluid moving therein and a conductance probe installed therein for providing a conductance signal indicating whether it is in contact with the fluid, features a jiggler arrangement having a jiggler arranged on the conductan...	01/09/2007
6938478	Impedance level meter for liquids in tanks A method and a system for detecting the level of fluid in a container is provided: The level meter includes first, second and third generally parallel probes being positioned within the container. The first probe includes a first portion that is at least partially c...	09/06/2005
6816072	Fire hydrant anti-tamper device A detection and signaling apparatus is mountable in a fire hydrant to detect a parameter, such as unauthorized movement of a discharge nozzle cap relative to the fire hydrant. A housing carrying a sensor, such as a motion detector, is mounted inside of the cap. The ...	11/09/2004
6696965	Rotary paddle bin monitor A rotary paddle bin monitor for indicating a level of dry bulk material in a bin. In normal operation, a rotary motor rotates a shaft and paddle. A spring mechanism keeps the motor in a first angular position when the paddle is rotating freely. However, w...	02/24/2004
6556142	System and method to communicate flow information between a service distribution line and a destination point A system and method for communicating information between a utility metering device, such as a water meter, and a remote location, such as inside a residence or a service provider....	04/29/2003
6445295	Burglar proof ice chest An ice chest which incorporates a mechanism for alerting an owner or user that an unauthorized individual is tampering with the ice chest contents or the ice chest itself. Burglar proof ice chest 10 includes a lid 12 and a bottom portion 14 with a spring ...	09/03/2002
6411916	Food safety control method and apparatus A method of tracking and monitoring the temperature of a food product from point of origin until it is removed from the display case by the consumer for immediate transport to the point of sale. As a plurality of food products are delivered to a store and...	06/25/2002
6323774	Portable excess water usage control and alarm system A monitor, shutoff control, and alarm for use with an inlet water supply obtained from a municipal water supply to prevent excessive usage of water due to leakage or human error, that includes a measuring means and shutoff valve connected to the inlet sup...	11/27/2001
5969267	Flowmeter having a temper proof housing mounted on a pipe section thereof for a telemetering unit including a battery and a circuit A system for monitoring the flow of water through a pipe. A pipe section is adapted to be located in a water line which includes a metering device having a target displaceable at a rate representative of the rate of flow through the pipe section. A teleme...	10/19/1999
5473312	Full container recognition system Disclosed is a full container recognition system (5) for determining when a container (16) having an upwardly facing opening is filled with articles (18) to a predetermined level. The system includes at least one deflectable feeler arm (10) mounted to a s...	12/05/1995
5376927	Programmable fluid detector with pressure probe discriminator A hydrocarbon leak detection system has a microprocessor based controller for receiving inputs from transducers and comparing the inputs against stored decision criteria to determine if hydrocarbons are leaking. The controller can receive and distinguish ...	12/27/1994
5223819	Material level indicating apparatus with status light and external test features Apparatus for indicating level of material in a vessel that includes a probe for placement in the vessel at a position corresponding to a desired height at which material level is to be detected. Electronic circuitry is coupled to the probe, and is respon...	06/29/1993
4884444	Motor-driven material level indicator Apparatus for indicating level of fluent materials, such as gasoline in an automobile tank, which comprises an impeller extending vertically through at least a major portion of the vessel in physical contact with material in the vessel. An electric motor ...	12/05/1989
4827768	Motor-driven material level indicator Apparatus for indicating level of fluent materials, such as gasoline in an automobile tank, which comprises an impeller extending vertically through at least a major portion of the vessel in physical contact with material in the vessel. An electric motor ...	05/09/1989
4318624	Slip clutch for a bin level indicator A slip clutch for use in a bin level indicator or the like between a motor operated driving shaft and a driven shaft which rotates paddle means adapted to be impeded or stopped by the rising material in a bin or the like, comprising a hollow end portion o...	03/09/1982
4293854	Monitor means and method for grain bin A grain storage bin having a content stirring machine therein, has a temperature sensor adjacent the stirring tool. The sensor is translated through the material in the bin by the stirring machine. A readout device outside the bin is coupled to the sensor...	10/06/1981
4236465	Material level checking apparatus for use in a rotary incinerating furnace A freely oscillating moving element (12-14-16), according to a radial axis with respect to the furnace wall (1) and having an inner appendix (12) deviated from the axis and with an outer counter-weight (16), can oscillate between two angular positions def...	12/02/1980
4218126	Developer collection device for a copying machine A shaft with a spiral blade is supported in a receptacle for receiving a developer removed from the surface of a photosensitive drum. The developer is conveyed toward a collection box during the rotation and movement of the shaft. When an excess load is a...	08/19/1980
4107994	Level detector A level detector is disclosed for detection of whether or not the level of the contents in a container, such as powder, grains, or liquid, attains a predetermined one. Said detector includes a coil and a vibrating plate consisting of a magnetic material o...	08/22/1978

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Class 340/615 - Moving sensor (e.g., impeller)