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| Number | Title | Issue Date |
| 7364610 | Air filter sensor The present invention is directed towards a sensor including, inter alia, a body having first and second spaced-apart apertures, the first aperture having a shape producing an audible noise upon a fluid passing therethrough; a piston positioned within the body; and ... | 04/29/2008 |
| 7354341 | System and method for detecting an air flow condition indicative of plugging of a discharge apparatus of an agricultural combine A system and method for detecting a condition indicative of onset of plugging or actual plugging of discharge apparatus of an agricultural combine, utilizing an air flow sensor disposed in relation to the discharge apparatus for sensing one or more air flow characte... | 04/08/2008 |
| 7207524 | Device for warning of differential pressure during the opening of a pressurized closing device pertaining to an opening in the fuselage of an aeroplane An apparatus warns of differential pressure during the opening of a pressure-loaded door that closes an opening in an aircraft fuselage. An air guide passage extends from the side with higher pressure to the side with lower pressure. The air guide passage is closeab... | 04/24/2007 |
| 7059194 | Pressure fault device The invention involves a pressure fault device for indicating a threshold pressure or a threshold differential pressure. The present invention provides a cost effective way to determine where a pressure problem has occurred. The device includes a housing having at l... | 06/13/2006 |
| 7049971 | System for selective notification of severe weather events A system for sending an effective warning signal to receivers in a predetermined area. A transmitter, activated by a local authority, sends a severe weather warning signal to a plurality of receivers. Cities or counties within the predetermined area are divided into... | 05/23/2006 |
| 7004360 | Easy pour tea kettle A tea kettle includes kettle body and a lid that covers a fill opening in the body. The lid includes a knob within which a whistle is positioned. A spout is attached to the kettle body and has a passageway. A ball seat is positioned within the passageway as is a str... | 02/28/2006 |
| 6976448 | Restriction indicator The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. T... | 12/20/2005 |
| 6837922 | Air filter sensor apparatus kit and method An air filter sensor kit and method of using the same for permitting a person to modify the filtering portion of a heating or cooling system that uses an air filter to enable the determination of when the air filter is dirty and needs changing. The air filter sensor... | 01/04/2005 |
| 6494160 | Ringing kettle An apparatus for boiling a liquid includes an audible alarm for notifying an individual when the liquid is boiling. The audible alarm makes use of steam generated by the boiling liquid to drive a turbine which is connected to a means for ringing a bell to... | 12/17/2002 |
| 6412435 | Dirty filter indicator A dirty filter indicator device adapted for use with a furnace, an air conditioning assembly and the like. As the filter collects dirt and dust, the overall airflow is restricted causing more air to flow through the whistle device. This increased air flow... | 07/02/2002 |
| 6386136 | Tea kettle whistle A tea kettle whistle including three main parts comprising a whistle top and whistle base, both preferably formed of plastic, and a whistle insert, preferably formed of stainless steel. The insert is designed to be easily assembled with the top with no ad... | 05/14/2002 |
| 6320513 | Dirty filter indicator A dirty filter indicator device adapted for use with a furnace, an air conditioning assembly and the like. As the filter collects dirt and dust, the overall airflow is restricted causing more air to flow through the whistle device. This increased air flow... | 11/20/2001 |
| 6299006 | Whistling beverage bottle construction A whistling beverage bottle construction (10) including: a cap member (20) adapted to engage the threaded neck portion (31) of a bottle member (30) having a peripheral lip (33) which surrounds the mouth opening (32) of the bottle member (30). The peripher... | 10/09/2001 |
| 6273285 | Structure of a whistling device for a cooker lid A whistling device for a cooker includes a cooker lid, an annular block, a handle block, and a screw, characterized in that the cooker lid is circular and is having a center opening and a venting hole; the annular block is circular and has a circular open... | 08/14/2001 |
| 6273130 | Gas regulator/valve device A gas regulator/valve device particularly for use in emergency escape breathing apparatus, and comprising a T-shaped regulator piston which is movable in a stepped bore and has a nylon seat for closing a jet which receives the input (high pressure) gas. M... | 08/14/2001 |
| 6209579 | Low supply pressure alarm for gas supply The invention provides an in-line low supply pressure alarm device preferably housed together with a gas pressure regulator and a gas flow controller, thereby eliminating the need for the operator to monitor gas availability. The alarm device is designed ... | 04/03/2001 |
| 6202875 | Whistling device of a cooker lid The present invention relates to a whistling device of a cooker lid and in particular, to a handle block mounted onto a cooker lid to adjust the size of an air hole on the lid and the sound produced. A steel bead or a whistle is placed in a screw cork to ... | 03/20/2001 |
| 6155196 | Multi-depth acoustic signal generating device A simple mechanical device is provided which generates acoustic signals at ne or more specified depths. The device consists of a spring loaded piston placed in a wall of a housing, the spring loading biasing the piston away from the housing. The piston is ... | 12/05/2000 |
| 6142094 | Depth sensitive mechanical acoustic signal generating device A simple, mechanical device is provided which produces an acoustic signal a specified depth. The device consists of a shear plug in an exterior wall of the device housing which prevents the movement of a spring biased piston. The plug is subjected to inc... | 11/07/2000 |
| 6102240 | Animated kettle A kettle for boiling water which uses steam power to drive a rotatable outer housing for providing animation is disclosed.... | 08/15/2000 |
| 6004000 | Temperature indicating device for a cooking vessel A temperature indicating apparatus for a cooking vessel, the apparatus having a housing having at least one opening, a template, a light directing mechanism, and a temperature sensing mechanism. The template being positioned generally in alignment with th... | 12/21/1999 |
| 5950862 | Animated kettle A kettle for boiling water which uses steam power to drive a rotatable outer housing for providing animation is disclosed.... | 09/14/1999 |
| 5791282 | Fire detection port A fire detection port installed in doors of occupied structures provides visible and audible signals on one side of a door in the event of fire on the other side of the door.... | 08/11/1998 |
| 5664478 | Spring brake actuator with corrosion fuses A spring break actuator (10) with a cast aluminum adapter (74) partially defining tandem spring brake and service brake portions has several corrosion fuses on the adapter. Each corrosion fuse is defined by a recessed or thinned area which does not compro... | 09/09/1997 |
| 5555905 | Cassette type gas cylinder with remaining volume alarm unit and manufacturing method thereof A cassette type gas cylinder, containing liquefied fuel gas, for giving an alarm when the volume of remaining fuel is reduced to a predetermined level or less in order to provide an advanced notice of replacement of the gas cylinder with a simple structur... | 09/17/1996 |
| 5534090 | Dosimeter capsule indicating service life of a rocket motor A novel dosimeter capsule for indicating the condition of the solid propellant contained within a rocket motor to provide a measure of the remaining service life of the motor is described, which comprises a sealed expandable container and a portion of the... | 07/09/1996 |
| 5471912 | Vessel having boiling indicating device A boiling indicating device for a vessel includes an electric device disposed in a cap and having an electric board and a speaker. The electric board includes two contacts. A plate is engaged in the cap and includes a conductor for electrically contacting... | 12/05/1995 |
| 5452819 | Air valve fuel fill cap A fuel fill cap for use in cooperation with a fuel tank of a fuel utensil to direct pressurized air within the fuel tank, wherein the cap includes a valve member mounted within the cap to permit pressurizing of the fuel tank through the cap. A modificatio... | 09/26/1995 |
| 5352255 | Noise maker for air filter A noise maker having a housing with a hole formed on at least one surface of the housing and a weighted member in resilient relationship over the hole. The weighted member is movable between a first position closing the hole to a second position for allow... | 10/04/1994 |
| 5325809 | Hair dryer with alarm notifying user of clogged filter A warning system for a hair dryer to warn the user when the air inlet of the dryer has become clogged with hair or other particles, the dryer including an air filter in the inlet, an air-actuated whistle having an air inlet end and an air outlet end, the ... | 07/05/1994 |
| 5226447 | Valve malfunctin detection apparatus A detection system is provided for sensing a malfunction of a valve having an outlet connected to an end of a first pipe through which pressurized fluid may be flowed in a downstream direction away from the valve. The system includes a bypass pipe connect... | 07/13/1993 |
| 5184858 | Sucker for plate glass A sucker for suctioning and lifting a sheet of plate glass has a sucker body defining a suction hole at a suction surface of the body. The sucker body carries a manual vacuum pump formed with a suction hole, a sensor for detecting the degree of vacuum and... | 02/09/1993 |
| 5170634 | Acoustic vapor type indicator An acoustic vapor type indicator is disclosed in which an audible signal such as a whistle is produced when a vapor is flowing through the indicator. The indicator includes an air chamber having an inlet for connection with a closed vessel containing a qu... | 12/15/1992 |
| 5051360 | Method for detecting microorganism activity Gas-generating or absorbing activity of microorganisms is detected by providing a vessel in which the microorganisms are incubated, the vessel having a cap with a membrane indicator therein. The membrane has a deformed region which is inflated to indicate... | 09/24/1991 |
| 5040477 | Warning device for compressed air tanks A warning device for use with tanks of compressed air which device will automatically generate an audible warning signal that can be heard under water or in other noxious gas or in oxygen-depleted environments when the air pressure in the tank reaches a p... | 08/20/1991 |
| 4952498 | Method and apparatus for detecting microorganism activity Gas-generating activity of microorganisms is detected by providing a vessel in which the microorganisms are incubated, the vessel having a cap with a membrane indicator therein. The membrane has a deformed region which is inflated to indicate the existenc... | 08/28/1990 |
| 4915879 | Signal coupling for humidifier container A hermetically sealed unitary liquid container of a thermoplastic material suitable for use in inhalation therapy is disclosed as having a signal coupling. A cupshaped female connector is adapted to be threaded onto a gas inlet coupling of the container. ... | 04/10/1990 |
| 4899740 | Respirator system for use with a hood or face mask A portable respirator system for supplying clean, breathable air to a hood or face mask is disclosed. The system can be carried on a waist belt and includes a housing containing air inlet and outlet plenums, and a battery powered, electric motor operated ... | 02/13/1990 |
| 4856564 | Indicator assembly An indicator assembly generates a sound when a liquid is flowing through a fill conduit for a storage tank. The assembly has a body with a first connection device for connection with the fill conduit, and has a second connection device for connection to t... | 08/15/1989 |
| 4825802 | Pheumatic alarm for respirator An alarm system for a respirator fed from a supply of gas under pressure comprises a control valve having a pilot port and feed ports displaceable between an open position permitting fluid flow between the feed ports and a closed position preventing such ... | 05/02/1989 |
