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| Number | Title | Issue Date |
| 7105757 | Magnetic flow switch, for aspirators in particular A magnetic flow switch (1) is described that includes a body (2) defining a chamber (20) destined to have a fluid flow pass through it, an excitation magnet (4) placed in a shuttle (3) mounted such that it can slide within the cham... | 09/12/2006 |
| 7105756 | Flowswitch having reduced number of parts A flow switch includes a straight, rigid paddle arm and a hub formed mid-length of the paddle arm. An elongate cylindrical member and an elongate paddle handle are formed integrally with the hub and extend from the hub in opposite radial directions. A cylindrical ma... | 09/12/2006 |
| 6740827 | Bi-directional piloted solenoid-operated valve A bi-directional piloted solenoid-operated valve which utilizes fluid pressure to provide both pressure-assisted sealing and pressure-assisted actuation to the main sealing disc in both flow directions. The valve may include a mechanical position indicator for provi... | 05/25/2004 |
| 6552283 | Activation flow switch for tankless water heaters A flow switch for use in tankless water heaters. The present invention is an activation flow switch for tankless water heaters. More specifically, the flow switch is comprised of polypropylene balls through which is inserted a magnet. The balls have a spe... | 04/22/2003 |
| 6548775 | Paddle flow monitoring device A flow sensor has a paddle assembly that is mounted to a housing by opposed pivot posts which extend from the paddle assembly between the paddle and the magnet. The housing has two pivot post clips that resiliently capture the pivot posts which are receiv... | 04/15/2003 |
| 6528748 | In-line flow switch assembly including magnetic sensitive plunger and microswitch actuator A flow switch for a high pressure washing system or other flow-related system is disclosed. The flow switch switches from an open to a closed position in the presence of adequate flow in a water or other fluid-carrying pipe. The flow switch includes a hou... | 03/04/2003 |
| 6472624 | In-line flow switch A flow switch for a high pressure washing system or other flow-related system is disclosed. The flow switch switches from an open to a closed position in the presence of adequate flow in a water or other fluid-carrying pipe. The flow switch includes a car... | 10/29/2002 |
| 6394670 | Parts maintenance managing system A system comprises a first maintenance interval storage for storing a first maintenance interval of each component which is not related to an actual utilization of an apparatus, a second maintenance interval storage storing a second maintenance interval o... | 05/28/2002 |
| 6384352 | Air sensitive user input devices An air sensitive input device is capable of use in a variety of environments which include, without limitation, toys, computer and video games, consumer appliances, musical instruments, and devices which assist the disabled. A housing having an intake por... | 05/07/2002 |
| 6084187 | Filter bypass switch A filter bypass switch for detecting a clogged or restricted flow condition in a filter such as an oil filter, the bypass switch including a housing having a passage extending therein, a plunger slidably positioned in the passage for movement therein, a w... | 07/04/2000 |
| 5935426 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exp... | 08/10/1999 |
| 5920265 | Waterline leak detection and shutoff system A waterline leak detection and shutoff system comprising an in-line flap valve which includes a pivotal valve flap member having attached thereto a magnet and first magnetically responsive switch which switches states, when the magnet is moved from a firs... | 07/06/1999 |
| 5888381 | Water filter with pressure actuated flow monitor A faucet mounted water filtration system with a filter life monitor includes a filter housing with a flexible cap which deflects upon introduction of water into the housing. The deflection of the cap closes a switch on an electrical circuit which counts t... | 03/30/1999 |
| 5829431 | Microphone attenuation device for use in oxygen breathing masks A microphone signal attenuating breathing mask body having a gas port for inhalation of a gas to the wearer in a flow stream therethrough. A demand microphone is mounted to the mask and is coupled to an electromagnetic switch responsive to a predetermined... | 11/03/1998 |
| 5605145 | Microphone attenuation device for use in oxygen breathing masks A microphone signal attenuating breathing mask body having a gas port for inhalation of a gas to the wearer in a flow stream therethrough. A demand microphone is mounted to the mask and is coupled to an electromagnetic switch responsive to a predetermined... | 02/25/1997 |
| 5503175 | Water safety system A water safety valve, system and method for detecting and shutting off water flow due to leaks or breaks in a water line in which the water flow is at a very low rate on the order of three to five fluid ounces per minute but having the capability of passi... | 04/02/1996 |
| 5416294 | Gas-flow operated switch A gas-flow sensor features delayed-action response to physical changes in gases as they flow through the sensor, thus avoiding transient flow-metering displacements in response to such change. The delayed-action response is attributable to blind hole and ... | 05/16/1995 |
| 5183983 | Flow switch assembly for fluid flow monitoring A basic housing for a fluid flow monitoring assembly comprising a sensing leakproof elongate hollow body formed from a non-magnetic, metallic material and pivotally mounting internally of same a vane assembly that at one end includes a vane adapted to be ... | 02/02/1993 |
| 5172089 | Pool pump fail safe switch A fluid detection device designed to detect the presence of fluids in a flowing or non-flowing state and having the ability to energize or de-energize large current devices such as a swimming pool pump motor. It is equipped with a fluid detector tube desi... | 12/15/1992 |
| 5162624 | Flow switch A fluid flow rate responsive signal generator includes moveable members which, in part, define a pair of paths for the flow of fluid. A first of the moveable members is a shuttle which supports a magnetic field generator, the shuttle being displaced towar... | 11/10/1992 |
| 5144977 | Fluid valve with actuation sensor Method and apparatus for remotely detecting when a safety relief valve is initially opened includes a permanent field fixedly associated with the closure member and a magnetic proximity switch mounted on the housing so that initial movement of the magneti... | 09/08/1992 |
| 5131070 | Portable humidifier A humidifier including a base defining a cavity; a liquid supply tank removably mounted on the base and adapted to maintain a given level of liquid in the cavity; an electrically energized humidification unit for inducing dispersal of the liquid contained... | 07/14/1992 |
| 5126722 | Point of lube monitor A piston-type point of lubrication magnetic flow indicator providing a barrel interfit with a bushing having a cylinder portion penetrating the barrel coaxially and a magnetic piston which reciprocates closely interfit inside the cylinder portion of the b... | 06/30/1992 |
| 5126097 | Fluid flow sensing and switching device The present invention is related to the fluid flow sensing and switching device installed in an air-conditioning system, particularly in a heat exchanger, which has a hollow body or housing to accommodate a metallic sensing member with a pair of conductiv... | 06/30/1992 |
| 5091612 | Magnetically actuated proximity flow switch A flow switch adapted to be attached to a pipe is designed to trip a switch at a preset flow rate. The switch employs a bending metal blade which deflects in the flow stream to move a magnet attached to the downstream side of the blade relative to a reed ... | 02/25/1992 |
| 5070220 | Flow-switch construction A flow-sensing configuration embodies straight-through geometry between inlet and outlet ports, all on a single central axis, using reed-switch and magnet technology to produce a logic output. Virtually all parts are of molded plastic, and the inlet and o... | 12/03/1991 |
| 5055641 | Fluid-flow-control-switch valve The invention consists of a combination fluid-control-switch valve adapted for monitoring water flow in water-supply systems so as to enable a purification or treatment system therein to operate as the water is being used. The valve comprises a two-sectio... | 10/08/1991 |
| 5021619 | Flow responsive switch apparatus A liquid flow switch apparatus is provided for connection to ducting wherein liquid flows forwardly. The apparatus comprises: a support body connectible to the ducting; a stem carried by the body to project into a liquid flow zone in the ducting, and a ma... | 06/04/1991 |
| 5019678 | Fluid flow switches with low flow resistance A flow switch includes a movable shuttle enclosed within a bore having narrower and wider bore sections. The shuttle has a solid cylindrical portion and a vaned portion. When there is no fluid flow from the inlet to the outlet, the shuttle rests on a part... | 05/28/1991 |
| 4996396 | Flow switch The invention contemplates a flow-switch construction of the straight flow-through variety wherein a magnet-bearing piston is displaced in response to a hydraulic-flow condition and in the displacement is caused to operate a magnetic-reed switch. The pist... | 02/26/1991 |
| 4963857 | Translatable dual magnets A fluid flow detection device includes a fluid conduit, at least one magnet translatable by action of the flow of fluid (gas or liquid) in said conduit and a switch which is caused to change state between "on" and "off" relative to the position of the mag... | 10/16/1990 |
| 4928520 | Plug release indicator A plug release indicator is provided which includes an elastomeric probe, with a wire embedded therein, which extends into the interior area of a plug housing or well casing. The wire has a lip at one end and an anchor at the other end, such that when a c... | 05/29/1990 |
| 4906807 | Apparatus for monitoring the flow of fluid media in a pipeline An apparatus for monitoring the flow of fluid in the pipeline has a hollow housing with a control element movably supported therein. The control element is movable under the action of the fluid flow, from an initial position to a position triggering a swi... | 03/06/1990 |
| 4900896 | Continuous flow water heater with magnetically-actuated flow switch A continuous flow water heater has a sealed chamber containing an electrical heating element and a diaphragm having an orifice through which water must flow upon a demand for hot water. The center of the diaphragm translates axially in response to the wat... | 02/13/1990 |
| 4883928 | Float switch, a control apparatus and a warning apparatus of an engine A float switch and a control apparatus of an internal combustion engine are disclosed. This float switch comprises a float attached to a main body so as to be vertically swung around one end thereof, a magnetic material fixed to the float, and a contact a... | 11/28/1989 |
| 4879439 | Apparatus for controlling start up and stop down of a hydraulic pump The apparatus is of the kind comprising a flow detector supplying, in the absence of flow, a stop down signal for the pump, a pressure detector supplying, for a predetermined minimum value of the pressure, a start up signal for the pump, and impeller mean... | 11/07/1989 |
| 4858647 | Attitude-insensitive, by-pass sensor Disclosed is a valve having a body having an inlet channel, an outlet channel in fluid communication with the inlet channel, and a flow-monitoring region situated medially between the inlet and outlet channels. Further provided within the body is a second... | 08/22/1989 |
| 4827092 | Flow monitor with non-rotatable mounting A flow meter or monitor arranged on a conduit section through which a medium to be monitored flows includes an actuating element extending through an opening in a wall of the conduit section, with a flow pressure plate of the actuating element positioned ... | 05/02/1989 |
| 4791254 | Flow switch A switch is responsive to fluid flow within a conduit. It is highly sensitive to variations in flow and forms an effective seal between the fluid and atmosphere. It includes a plastic pivot ball in a spherical seat. A blade extends from the pivot ball int... | 12/13/1988 |
| 4788389 | Flow switch valve A flow switch valve including a housing main body comprising a plurality of valve casings stacked contiguously and each having a fluid flow channel and a valve seat member, a valve member passing slidably through said valve casings and having valve bodies... | 11/29/1988 |
