Quotables
"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7370600 | Air horn with light signal A horn device includes a trumpet fixture which removably attaches to the valve portion of a canister containing a charge of compressed air. An actuator button on the trumpet fixture is operable to open the valve assembly of the canister causing release of the pressu... | 05/13/2008 |
| 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 |
| 7244294 | Air filter monitoring system A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 07/17/2007 |
| 7159533 | System and method for monitoring the delivery of gas to a person's airway A gas delivery system and method are disclosed in which a flow indicator is interposed between the distal end of a conduit connected to a gas source and a device for introducing the gas in the airway of an individual so that the individual, or some other person in v... | 01/09/2007 |
| 6994739 | Filter mounting device for vacuum cleaner A structure for a vacuum cleaner for confirming whether a filter is mounted into a vacuum cleaner includes an interlock mechanism. The vacuum cleaner includes a cover including a discharging port for discharging air, and configured to cover the first end of a receiv... | 02/07/2006 |
| 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 |
| 6796264 | Fluid flow monitor and indicator A metal body has a threaded inlet port and a threaded outlet port which extend to corresponding inlet and outlet chambers within the body, and a semi-spherical liner seats within the body and has ports communicating with the inlet and outlet chambers. A dome-shaped ... | 09/28/2004 |
| 6526907 | View around flow indicator A flow indicating device including a tube, a turbine wheel, and a cylinder is described. The tube defines a flow path. The turbine wheel is mounted in the tube for rotation alongside an inside wall of the tube. The turbine wheel has a plurality of turbine... | 03/04/2003 |
| 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 |
| 5832968 | Fuel overfill warning device A fuel overfill warning device including a vent tube. A whistle alarm is positioned within the vent tube. A pair of flexible hoses engage opposing end portions of the vent tube. The whistle alarm will emit an audible signal as air is forced out of the ven... | 11/10/1998 |
| 5798697 | Exhaust/supply direction indicator An apparatus for detecting the flow direction of a fluid from an apparatus or between two apparatuses such as a biohoods, fume cabinets, or filters. The device includes a conduit horizontal plane and adapted to receive the fluid. A detecting element is di... | 08/25/1998 |
| 5410298 | Fluid flow direction detector An apparatus for detecting the flow direction of a fluid between two enclosed spaces, such as hospital rooms, includes a conduit extending along a horizontal plane and adapted to receive the fluid. A detecting element is disposed within the conduit and mo... | 04/25/1995 |
| 5377395 | Externally removable casket hardware An externally mounted removable hardware assembly for a casket having a threaded bolt extending through a hole in a casket side wall. Inside the casket, the bolt threadably engages a nut which is snap-fit within a retention can. The nut has a longitudinal... | 01/03/1995 |
| 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 |
| 5302055 | Signalling device A signalling device for scuba divers uses their compressed air supply to drive a piston (42, 51, 72) against a diaphragm (22, 48, 49, 57, 63, 90) to generate sound in water against the diaphragm. A bistable valve 34, 52) switches pressurised air alternate... | 04/12/1994 |
| 5291182 | Fluid flow direction detector An apparatus for detecting the flow direction of a fluid between two enclosed spaces, such as hospital rooms, includes a conduit extending along a horizontal plane and adapted to receive the fluid. A detecting element is disposed within the conduit and mo... | 03/01/1994 |
| 5229766 | Marine fuel tank pollution control apparatus A marine craft includes a pollution control device for marine fuel tanks. The pollution control device includes a compartment for receiving fuel that leaves the fuel tank headed toward the vent via the vent line. The volume of the compartment desirably ho... | 07/20/1993 |
| 5197407 | Security device for attachment to the rails a movable door or window A security device in the form of a combination door or window stop comprising a housing for containing a canister of gas under pressure, a valve mechanism for releasing the gas through a sound generator upon unauthorized movement of an associated door or ... | 03/30/1993 |
| 5023608 | Fuel filler alarm for boats A fuel filler alarm for boats includes a housing, a whistle element on the housing and a suction ring on the housing. The suction ring is operable for detachably securing the housing to the hull of a boat adjacent a fuel tank vent thereon so that air pass... | 06/11/1991 |
| 4997013 | Liquid fill level indicator An apparatus and a method for filling vessels with liquid has a non-electric fill indicator having an air passageway leading up and out of the vessel to an air flow indicator, air escaping during filling causes the indicator to whistle and when the whistl... | 03/05/1991 |
| 4976297 | Funnel having improved liquid fill level indicator An apparatus and a method for filling vessels with liquid has a non-electric fill indicator having an air passageway leading up and out of the vessel to an air flow indicator, air escaping during filling causes the indicator to whistle and when the whistl... | 12/11/1990 |
| 4950107 | Audible alarm device for divers A diver's alarm apparatus, for use with conventional diving equipment, having a body portion (34) and a noisemaker portion (32). The body portion (34) includes a first opening (42) therethrough communicating at opposite ends thereof with connections for a... | 08/21/1990 |
| 4871081 | Dual wall vessel for primary and secondary liquid containment A containment vessel for potentially harmful fluid including a fluid impermeable primary container having a multi-layer floor including a leak detection system. A concentric secondary fluid impermeable containment vessel surrounds and is spaced from the p... | 10/03/1989 |
| 4805701 | Fire extinguisher and alarm apparatus A fire extinguisher and alarm apparatus for a container having a rim and a cavity to retain combustible materials comprising a reservoir having a chamber for retaining a fire extinguishing fluid under gas pressure, a hollow nozzle for ejecting the fire ex... | 02/21/1989 |
| 4759309 | Passive personal alarm device A passive air, gas aerosol or pressurized fluid activated personal self-protection screech alarm device that is armed prior to the person utilizing it entering into a potentially dangerous area or situation. The primary and radically different feature of ... | 07/26/1988 |
| 4665386 | Auxiliary knob for gas valve to annunciate open condition An electro-mechanical auxiliary knob structure, releasably attachable to a rotatable knob of a valve, to annunciate an open condition of that valve operated thereby. The auxiliary knob pivots relative to its attachment structure to switch electric circuit... | 05/12/1987 |
| 4632052 | Tornado early warning device A tornado warning device which emits a warning sound when air escapes the said device at a pre-determined rate, with said rate being that of the loss of air pressure in the path of a tornado.... | 12/30/1986 |
| 4523466 | Acoustic monitoring of tube vibration The tubes of tube and shell heat exchangers destructively vibrate at certain velocities with which fluid flows over their outside surfaces. An acoustic generator is positioned to respond to the fluid vibrations generated by the tubes. The structure of the... | 06/18/1985 |
| 4463473 | Vacuum cleaner The present invention relates to a vacuum cleaner in which an alarm sound is generated by introducing air from the exterior in bypassing relation to a filter 8 when a suction load imposed on a fan motor 3 exceeds a predetermined value. The alarm sound can... | 08/07/1984 |
| 4445454 | Temperature sensor A fusible solder temperature sensor adapted for use with a trapped fluid pressure header alarm system. The sensor includes an insulating plastic fitting having threads at one end and a bore therethrough for connection to and fluid communication with the h... | 05/01/1984 |
| 4389880 | Rapidly erodible sonde An erodible sonde for detecting sand in the gas conveyed through a pipe. Such a sonde is constituted by a thin aluminium tube, one end of which communicates with a device for measuring the pressure outside the pipe and the other end of which is closed, th... | 06/28/1983 |
| 4375789 | First out indicator Control system for indicating which, of a plurality of sensed functions, first malfunctions. The system includes a plurality of series connected devices, each such device includes a shiftable valve which, in one position activates an indicator, and, in an... | 03/08/1983 |
| 4252076 | Automatic signaling device An automatic signaling device responsive to small pressure variation, said pressure variations being created by a restriction of fluid flow within a flow system. The pressure variation causes fluid to flow through a resonant; loading chamber, activating a... | 02/24/1981 |
| 4236949 | Process for preparing a hermetically sealed assembly The formation of a hermetic seal in an assembly resulting from the connection or encapsulation of one or more substrates such as cables by one or more dimensionally-recoverable covering members such as heat-recoverable sleeves is checked by detecting the ... | 12/02/1980 |
| 4227482 | Pressurized fluid-actuated sound-producing device, and method of assembling it A sound-producing device, for use with a pressurized fluid container, includes a body having an orifice surrounded by an annular seat, a cap facing the seat, and a diaphragm held taut over the seat, the margin of the diaphragm being tightly gripped betwee... | 10/14/1980 |
| 4215646 | Low pressure differential detecting whistle A whistle audibly responsive to extremely small pressure differentials is described. The whistle has a cylindrical inlet portion, a cylindrical outlet portion and a cylindrical constriction that form a passageway between said inlet and outlet portions. Th... | 08/05/1980 |
| 4166428 | Intruder alarm An intruder alarm security device includes a source of fluid under pressure which serves as a medium for oscillating a diaphragm at the throat of a horn to create an audible warning signal. The intruder alarm includes an actuator, a plunger assembly and c... | 09/04/1979 |
| 4091762 | Audible vibratory reed assembly An audible vibratory biased reed assembly having the properties of being activated or commencing vibration upon being subjected to a predetermined energy level. This assembly utilizes a straight, flat, elongated, closed or clapping reed, to produce a clat... | 05/30/1978 |
| 4044712 | Pressurized fluid powered horn A hand-held pressurized fluid powered audible alarm includes a housing in which is mounted a pressurized container having a deflection responsive valve and outlet member projecting therefrom. A horn body is mounted on and in fluid communication with the m... | 08/30/1977 |
| 4034813 | Combined fire extinguisher and audible alarm A portable combined fire extinguisher and audible alarm that may be removably disposed at a desired location to automatically eject a stream of pressurized fire extinguishing fluid into an adjacent area upon the temperature of the ambient atmosphere surro... | 07/12/1977 |
