Odorizers Patents (Class 261/DIG17)
  • Patent number: 6135431
    Abstract: A scent cartridge (1) with a substrate (3), wherein the latter consists of porous particles of silica gel, activated carbon and/or aluminum oxide, which are impregnated with scents or active ingredients. The substrate (3) is fixed in a small cylindrical glass or aluminum tube (2) by means of wiremesh caps (4) made of metal or plastic. A membrane disk (6) is sealingly held on each flanged edge (5) of the small glass or aluminum tube (2) by means of a cap (7) each so that the membrane disks (6) can be punctured with needles or cannulae for releasing scents or active ingredients and an air or carrier gas flow controlled in a time-dependent manner is then admitted to the scent cartridge (1).
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: October 24, 2000
    Assignee: Drager Sicherheitstechnik GmbH
    Inventors: Gerhold Muhmel, Mark Griesbach, Rita Hamann
  • Patent number: 6126729
    Abstract: A portable air filter system having a manually operable spray pump for scenting the air flowing therethrough. The system includes an enclosure having an air inlet and an air outlet, a motor/fan assembly for moving air through the air inlet and out the air outlet, a plurality of air filters disposed between the air inlet and the air outlet, and a manually operable pump in fluid communication with a liquid scented material for scenting the air disposed between the air filters and the air outlet. A brush is attached to a pair of side walls of a wide portion of the enclosure and spans the air inlet. In use the brush aids in dislodging dust and lint from fabric materials.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: October 3, 2000
    Inventor: Gregory S. Smith
  • Patent number: 6117218
    Abstract: A scenting device for attachment to an air filter in a HVAC system. The scenting device comprises a sheet formed from a material that is substantially impervious to air. The sheet is cut so as to form at least one opening through which the air to be scented flows. The opening is preferably serpentine and defines a plurality of fingers in the sheet. A relatively thick layer of a high viscosity liquid, such as a gel, containing a fragrance is deposited onto the sheet. The device is made by partially cutting through the sheet so as to form a zone of weakness having the shape of the intended opening. After the fragrance-containing material is deposited on the sheet, it is packaged and slipped to the user. The user tears the sheet along the zone of weakness, thereby forming the opening.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: September 12, 2000
    Assignee: Web Products, Inc.
    Inventors: Michael R. Snyder, Gary A. Robinson
  • Patent number: 6106786
    Abstract: A blowing type aroma apparatus, involving no danger of fire and being capable of providing a natural aroma. A body of the aroma apparatus has an opening in its upper surface. A container for containing a liquid aromatic and a cylinder surrounding this container and having open upper and lower ends are located in the opening. An impregnator impregnated with the aromatic is disposed in the container. An axial flow fan is housed beneath the opening within the body and the air flow generated by the axial flow fan passes through the support member and flows into a space between the cylinder and the container. The air becomes a laminar flow and rises in the space between the cylinder and the container. The air flow permits the volatilization of the aromatic contained in the impregnator, whereby the aroma is diffused from the opening at the upper end of the cylinder.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: August 22, 2000
    Assignee: Futaba Denshi Kogyo K.K.
    Inventor: Ryoichi Akahoshi
  • Patent number: 6093374
    Abstract: An automated device for periodically revitalizing potpourri can be placed in a potpourri container. The device includes a mixing element for mixing potpourri and an aerosol canister containing a fragrance oil for adding fragrance to the potpourri. A battery powered motor periodically rotates the mixing element to stir the potpourri and activates the aerosol canister to dispense the fragrance oil into the potpourri. The device thus uniformly mixes the fragrance into the potpourri. Electric timer circuitry is provided to activate the device on a preset periodic basis.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: July 25, 2000
    Inventor: Clifton R. Bukowsky
  • Patent number: 6080367
    Abstract: An aromatic container has a rotating device, a disk vessel disposed on the rotating device, a ring disposed on the disk vessel, a pivot seat engaging with the rotating device, and a clamp device engaging with the pivot seat. The ring has a plurality of lower columns, a plurality of circular apertures, and a center opening receiving a center cover.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: June 27, 2000
    Inventor: Jun-Ru Lin
  • Patent number: 6053483
    Abstract: An aroma diffuser includes a housing with front and rear housing parts, a circuit-mounting frame and a fan unit. The front housing part has an upper portion formed with an air outlet. The lower portion of a rear wall of the rear housing part has a carrier that extends transversely into the housing and that supports an aromatic preparation thereon. The circuit-mounting frame is disposed inside the housing and is mounted on the upper portion of the rear wall. The fan unit includes a tubular collecting wall mounted on the circuit-mounting frame and disposed above the carrier. The tubular collecting wall has upper and lower wall portions. The upper wall portion has a front side formed with a radial air flow outlet that is registered with the air outlet of the front housing part.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: April 25, 2000
    Assignee: Bobson Hygiene International Inc.
    Inventor: Cheng-Chang Chen
  • Patent number: 6050551
    Abstract: A portable apparatus for dispensing of vapor from a volatile insect repelling or animal attracting/repelling substance into the surrounding environment, which includes a body having an inlet and outlet means, a sealing means for selectively closing and opening the vent means, a substance containing means for containing the volatile, a motorized fan, and an electrical power source. The apparatus includes a sealing means to seal the volatile substance within the body of the apparatus when the device is not in use. An important feature is also the ability to transmit volatile insect repelling or animal attracting/repelling substance over a great area.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: April 18, 2000
    Inventor: Brent Gary Anderson
  • Patent number: 6032930
    Abstract: An automatic air scenting system that introduces a variety of pre-selectable scents into the heating/air-conditioning duct of a motor vehicle or habitable structure comprising a perforated housing, an electric fan for drawing air through the perforated housing, a container of compressed fiber blocks soaked in a scented oil based liquid positioned within the perforated housing, and a hose connecting the housing to the duct of the heating/air conditioning system whereby the fan forces the accumulated scent through the hose into the duct. Automatic functioning is obtained by connecting the fan power lines to the on/off switch and thermostat wiring of the heating/air-conditioning system.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: March 7, 2000
    Inventor: Jay Cee Calino
  • Patent number: 6024783
    Abstract: An apparatus for the remote or local delivery of stored or real-time aroma sensory information to an end user of a multimedia device. The present invention includes an aroma converter for encoding aroma information into electrical signals, a delivery system for delivering the electrical signals, and a retrieval system for receiving and processing the electrical signals to control the aroma or combination of aromas emitted by one or more aroma release chambers.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 15, 2000
    Assignee: International Business Machines Corporation
    Inventor: Mark Budman
  • Patent number: 5958346
    Abstract: An article deodorizer system and method which is suitable for fixed, mobile, and vehicular mounting and complete interfacing with their air systems at any sites including homes, businesses, airplanes, ships, railcars, automobiles, etc., providing for air improvement by deodorizing selected air streams continuously by effecting the induction of desired interchangeable deodorizing additives into air streams whether conditioned or not improving human conditions. A control system provides for either stand-alone or complete automated operation and complete interfacing with other small and/or supervisory or complex, large control systems.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: September 28, 1999
    Inventor: Bennie L. Evans, Jr.
  • Patent number: 5932147
    Abstract: The air freshener device is adapted to be mounted on a ventilation duct in a vehicle or other closed space. The housing has a front side and a back side and respective input and output air ports defined thereon. Forced air, expelled from the ventilation ducts, enters the input air ports of the housing, causes a rotatable fan to rotate and generate arcuate and, preferably rotating, air currents in the generally hollow interior space defined by the housing. An air freshener pellet is disposed within the housing and the arcuate air flow, and preferably rotatable air flow, passes over the pellet, mixes with the expelled ventilation air and is ejected from the housing via the output air port.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: August 3, 1999
    Assignee: American Auto Accessories, Inc.
    Inventor: Wen Jye Chen
  • Patent number: 5894001
    Abstract: A fragrance evaporator allows doses of fragrance to be released into the atmosphere in a controllable manner and only when required. The fragrance evaporator has a solid surface that may be wetted as required with liquid fragrance from a fragrance reservoir. An evaporation space that surrounds the solid surface and that is in communication with the atmosphere is thus created above the surface.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: April 13, 1999
    Assignee: Venta Vertriebs AG
    Inventors: Alfred Hitzler, Erich Harter
  • Patent number: 5851442
    Abstract: A button-actuated air freshener in which rotatable within a dome having a vented cylindrical shell is a turret having a central shaft aligned with the axis of the shell and an array of wings radiating from the shaft, each formed by a panel of porous material impregnated with a fragrance oil. Mounted on top of the dome is a spring-biased button operatively coupled to the shaft whereby when the button is depressed, this action causes the turret to spin to create within the shell an air vortex. This vortex acts to volatilize fragrance oil on the surface of the wings to produce an aromatic vapor that is discharged through vents in the shell into the atmosphere of the enclosure in which the air freshener is installed, the aromatic vapor serving to mask unpleasant odors permeating the atmosphere.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: December 22, 1998
    Inventor: Donald Spector
  • Patent number: 5603455
    Abstract: A deodorizer container including a casing, an inner container fitted into the casing and designed for receiving liquid deodorizer, the inner container being provided with a spray nozzle at a top thereof, and an evaporation controller including an outer tube and an inner tube rotatably fitted into the outer tube, the outer tube being formed with a plurality of perforations, the outer tube being provided at an end with a cylindrical portion communicated with the outer tube through a slot, the cylindrical portion being adapted to receive the spray nozzle of the inner container, whereby the evaporation rate of the liquid deodorizer in the deodorizer container can be controlled as desired.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: February 18, 1997
    Inventor: Shi Huang Lin
  • Patent number: 5324490
    Abstract: The present invention relates to a perfumed stable gel and to a deodorant container which retains a deodorant in the form of that perfumed stable gel, and which is adapted for use with various deodorant dispensers. The present invention also relates to a method of manufacture for the perfumed stable gel and the deodorant container in a unitary form. Specifically, the invention relates to a disposable deodorant container which retains a perfumed stable gel comprised of a unique combination of chemical components. The stable gel can be maintained at temperatures of up to 140.degree. F. and has a perfume content of up to 75%.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: June 28, 1994
    Assignee: Eftichios Van Vlahakis
    Inventors: Eftichios Van Vlahakis, John A. Manolas, Michael J. Marrese
  • Patent number: 5302359
    Abstract: An apparatus for dispensing odorant vapor into an air stream is disclosed. The apparatus contains a reservoir for containing a volatilizable liquid, a dispensing well, liquid moving means for withdrawing liquid from the reservoir and causing it to flow into the dispensing well, and switch means for activating the liquid moving means.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: April 12, 1994
    Inventor: Raymond L. Nowatzki
  • Patent number: 5281401
    Abstract: A vapor dispensing system comprising a container adapted to contain a cartridge for controllably dispensing a liquid substance as a vapor, a pump for causing a flow of the vapor, conduit means for conveying the vapor flow including a first conduit communicating between the container and the pump, a second conduit communicable between the pump and the atmosphere, and means for controlling the flow of vapor.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: January 25, 1994
    Assignee: Vaportek, Inc.
    Inventor: John D. Bryson, Sr.
  • Patent number: 5240653
    Abstract: A basket fitting is provided for an air filter used in the air circulation ducting of a domestic dwelling and is designed to be attached directly to the duct covering grill within a room. Various air fresheners and germicidal agents may be retained within a particular basket attached to a grill, as can a charcoal filtering agent, and in one preferred embodiment, a plurality of these baskets may be interconnected to enhance the effectiveness of the invention.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: August 31, 1993
    Inventor: Kaywal K. Ramkissoon
  • Patent number: 5230867
    Abstract: A cartridge for an air freshener is disclosed, having a pad sealed within a housing by an air-permeable membrane. The density, permeability, and fiber characteristics of the pad and membrane are selected to achieve extended life while maintaining satisfactory air freshening performance.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: July 27, 1993
    Assignee: Waterbury Companies, Inc.
    Inventors: Walter A. Kunze, Robert J. Semanchik
  • Patent number: 5147582
    Abstract: A self-contained air freshening or deodorizing apparatus with a two-part housing including a mounting section for securing the apparatus in an operative position and a closure section for connection thereto for forming an enclosure. A battery-powered air movement generating mechanism includes a fan having a hub with a motor nested at least partially within the hub and connected thereto for rotating the fan hub and five blades mounted thereon to generate a path of air flow through the enclosure. Air freshening or deodorizing mechanism for supplying a source of vaporizable material is positioned in the path of air flow. An antibootleg device is mounted in the enclosure in such a way that removal of the device renders the motor inoperable.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: September 15, 1992
    Assignee: Steiner Company, Inc.
    Inventors: Charles R. Holzner, Sr., Allen J. Voth
  • Patent number: 5078046
    Abstract: An air treatment system for a vehicle or other habitable structure. The apparatus includes a supply of treating fluid, a pump and spray nozzle arrangement, and a control system. The spray nozzle discharges the treating liquid in an atomized condition within an air circulation conduit, and the control system insures that there is air flow taking place in the conduit before atomization begins and that air flow is still continuing after cessation of atomization. The sequences is insured by a logic control and the pump is actuated through a timer and relay arrangement. An automatic conditioned responsive mode of operation can also be provided.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: January 7, 1992
    Inventors: Dennis G. Mascolo, Frank Giuliano, John A. Young
  • Patent number: 4913034
    Abstract: The air handling duct structure of an automotive vehicle having inlet and outlet ends and liquid heat exchange structure serially disposed within the duct structure intermediate the ends as well as blower structure serially disposed in the duct structure at a location therealong spaced intermediate the inlet end and the heat exchange structure includes liquid injection structure opening into an exposed wall portion of the duct structure at the aforementioned location thereof and is operative, when actuated, to inject a deodorizing liquid (and also possibly a disinfectant liquid) into the interior of the duct structure at the aforementioned location therealong.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: April 3, 1990
    Inventors: Joseph E. J. Ripple, Daniel E. Kelly
  • Patent number: 4830791
    Abstract: An improved odor control device including a source of deodorizing olfactory stimuli, a squirrel cage fan for circulating air carrying the stimuli, an electronic circuit providing a visual indicia relating to the status of the power source. A secondary circuit controls indicia means for indicating the elapse of a predetermined span of time from initilization of control of one such span of time for the purpose of alerting the user to examine and/or replace the olfactory stimuli.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: May 16, 1989
    Assignee: Scentex, Inc.
    Inventors: Kenneth J. Muderlak, Patrick D. Maloney
  • Patent number: 4603030
    Abstract: A system for emitting, in sequence, a plurality of different scents includes a plurality of holders for scent-bearing chips; a mechanism for propelling these scents from a system; a mechanism for conveying, selectively, any desired scent holder into operative relation with the propelling mechanism; and a mechanism for actuating the propelling mechanism to propel scent from any desired scent holder in response to a programmed, predetermined sequence of scents of predetermined duration.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: July 29, 1986
    Inventor: Robert E. McCarthy
  • Patent number: 4432938
    Abstract: The disclosed battery-powered vapor dispensing apparatus has a housing with an access opening, an air intake port, an air discharge port, and means for supporting a vaporizable product in a path between the intake and discharge ports. A structurally-integrated mechanism for creating air flow along the path, assembles as a unit with the housing. The mechanism includes a chassis and an electric motor having electrical contact lugs on one end and a shaft supporting a fan projecting from the other. The chassis comprises a base, means for mounting the motor, a battery compartment, and means for mounting two resilient wire connectors such that one portion of each is resiliently urged against a lug of the motor and a second portion of each is resiliently urged against a battery terminal.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: February 21, 1984
    Assignee: Risdon Enterprises, Inc.
    Inventor: Murray O. Meetze, Jr.
  • Patent number: 4428892
    Abstract: A humidifier device to prevent warping, cracking and shrinking of elements in stringed or other musical instruments subject to modification by reason of a lack of moisture in the instrument carrying case. The device comprises a small, sealed housing detachably securable to the interior of the instrument case and provides a refillable and leak-proof reservoir which feeds water or other evaporatable fluid to the top, bottom and inner peripheral side walls of an absorbent ring when the reservoir is filled to capacity; and when partially full and in any position of the carrying case water feed to the absorbent ring is maintained along at least one of the absorbent ring walls. A control ring is further provided which is rotatable about the housing to increase or decrease the evaporation rate of water from the housing ports communicating with the absorbent ring.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: January 31, 1984
    Inventor: Martin Berliner
  • Patent number: 4370300
    Abstract: An aromatic odorant emitting device comprising a mainbody case and a cover case, said device including an odorant, and an evaporator immersed with the aromatic odorant, and a fan unit which blows the air to the evaporator so as to control the evaporation rate of the odorant in response to the temperature and the illumination intensity in the room, with the aid of a thermosensor and a photosensor, so that a constant aromatic odorant evaporation is provided.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: January 25, 1983
    Assignee: Duskin Franchise Kabushiki Kaisha
    Inventors: Yasuyuki Mori, Haruo Nishimura, Yoshikazu Sugahara
  • Patent number: 4308040
    Abstract: Apparatus, particularly adapted to the removal of odorous constituents from waste gas streams, is described. The apparatus comprises a treatment vessel or chamber preferably of cylindrical shape containing a coaxially-mounted exhaust duct which serves also as a columnar support for the chamber top or roof. An odorous gas is introduced tangentially into an upper portion of the reactor and is caused to move in a spiral flow around the central column and to exahust through an exit port into the central duct adjacent the chamber floor. An arcuate, spiral baffle is mounted on the chamber floor and extends continuously from the inner vessel wall to the central duct thereby directing gas flow into the exit port to reduce pressure drop through the treatment chamber. A finely divided spray of a reagent reactive toward the odorous compound is introduced into the chamber through nozzles ringing the chamber wall or mounted in the chamber roof.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: December 29, 1981
    Assignee: Quad Environmental Technologies Corp.
    Inventors: Harold J. Rafson, Egbert deVries
  • Patent number: 4302226
    Abstract: Apparatus, particularly adapted to the removal of odorous constituents from waste gas streams, is described. The apparatus comprises a treatment vessel or chamber preferably of cylindrical shape containing a coaxially-mounted exhaust duct which serves also as a columnar support for the chamber top or roof. As odorous gas is introduced tangentially into an upper portion of the reactor and is caused to move in a spiral flow around the central column. A finely-divided spray of a reagent reactive toward the odorous compound is introduced into the chamber through nozzles ringing the chamber wall or mounted in the chamber roof. Reagent droplets coalesce on the chamber floor and are removed from the vessel. The treated gas exhausts up the central duct through openings located near the bottom thereof.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: November 24, 1981
    Assignee: Quad Environmental Technologies Corp.
    Inventors: Harold J. Rafson, Egbert deVries
  • Patent number: 4301095
    Abstract: A superior room air freshener is disclosed having a short distance of travel from point of entry to egress for the delivery of a volatile liquid refreshener. The device is battery operated and can be wall mounted or displayed on a table.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: November 17, 1981
    Assignee: Product Enterprise, Inc.
    Inventors: Leo L. Mettler, Arthur L. Johnson
  • Patent number: 4229415
    Abstract: A dispenser comprising a rectangular housing defining an air inlet chamber between the first partition and the top wall of the housing, a valved air inlet communicating with the air inlet chamber, a second partition defining an air outlet chamber between the second partition and the bottom wall of the housing and a central chamber between the first and second partitions, a valved air outlet communicating with the air outlet chamber, apertures in the first and second partitions for affording air flow from the air inlet chamber, at least one tray member, a support on the end walls for horizontally supporting the tray member in the central chamber and for facilitating at least partial withdrawal of the tray member, a holder on the tray member for removably holding a plurality of relatively thin rectangular envelopes which contain a substance to be dispensed and which are arranged in parallel vertical relation to each other to permit air flow past the envelopes from the air inlet chamber to the air outlet chamber
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: October 21, 1980
    Assignee: Will Ross, Inc.
    Inventor: John D. Bryson
  • Patent number: 4226829
    Abstract: A vaporizer for air treatment and the like producing vapors which can be renewed to provide effective operation for an extended period of time. The vaporizer comprises an hourglass-shaped container having a pair of adjacent chambers communicating by means of a restrictive orifice. Each chamber has an opening in the end covered by a porous membrane. The container contains a supply of particulate fluid-like carrier material carrying a volatile vapor-producing treating material. A part of the treating agent is transferred by the carrier material to the membrane for producing air treating vapors by volatilization or evaporation of the treating agent. Inversion of the container, mixes and redistributes the treating agent among the carrier vehicle particles and exposes a freshly loaded vapor producing membrane.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: October 7, 1980
    Inventor: Andrew Mike
  • Patent number: 4213923
    Abstract: A central source of odor neutralizing vapor fed into a floating or partially suspended distribution network is used to control odors from the surface of odiferous ponds having large surface areas.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: July 22, 1980
    Assignee: Will Ross, Inc.
    Inventor: John D. Bryson
  • Patent number: 4173604
    Abstract: A vapor generator for generating vapors from a vaporizable liquid concentrate such as a deodorant-fragrance concentrate and employable either with or without a fan dispenser. The vaporizable liquid is sealed within a receptacle having an openable top portion, such as a pull-top can, and a capillary action diaphragm is located under the top so as to be exposed when the top is opened. The vaporizable liquid is transported upwardly from the body of liquid to the diaphragm by capillary action membrane means extending from the top to the bottom of the receptacle, and then distributed by capillary action through the diaphragm and vaporized from the exposed surface thereof. A small pressure equalization port through the diaphragm equalizes the vapor pressure under the diaphragm to substantially atmospheric pressure so that such vapor pressure will not interfere with the capillary actions.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: November 6, 1979
    Assignee: Cline-Buckner, Inc.
    Inventor: Dimitrios A. Dimacopoulos
  • Patent number: 4166087
    Abstract: The present invention relates to an improved vapor dispenser and method that may be used for vapor-treating the air of a given area; the air-treating vapors containing such diverse elements as medicants, decongestants, inhalants, repellants, insecticides, bactericides, deodorants, and the like. The disclosed vapor dispenser may be described as a "semistatic" type, since it uses a static vapor generator that does not require a propellant, and uses automatic intermittent air movement for dispensing the accumulated vapors into the area to be treated by the vapors. Thus, the disclosed semistatic vapor dispenser continually provides the desired vapor concentration.An improved static vapor generator is also disclosed, the improvement permitting the static vapor generator to produce vapors at a more uniform rate during its entire lifetime.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: August 28, 1979
    Assignee: Cline-Buckner, Inc.
    Inventors: Lee S. Cline, Philip J. John
  • Patent number: 4159672
    Abstract: Apparatus is provided for introducing a scent into a forced air temperature changing system of the type having a blower and an air filter positioned upstream of the blower. The apparatus comprises a container for retaining a fluid having the desired scent. A spray device is positioned adjacent the filter and is connected to the system so that the scent containing fluid exiting through the spray device is sprayed onto the filter. A conduit connects the container with the spray device to provide a passage for the flow of the fluid from the container to the spray device. Control means serially connected in the conduit between the container and the spray device controls the flow of the fluid to the spray device. Hence, by operating the control means, the fluid is selectively sprayed on to the filter. The air flowing through the filter picks up the scent and brings the scent to the desired area.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 3, 1979
    Inventors: Michael Garguilo, Ronald DeVito
  • Patent number: 4025315
    Abstract: Liquid natural gas is odorized with either ethyl or methyl mercaptan by initiallly mixing the odorant with a diluent and then introducing the resultant mixture into the liquid natural gas. It is preferred that the diluent have a freezing point below the boiling point of liquid natural gas. It is theorized that with the diluent the mercaptans either do not freeze or are dispersed sufficiently in the liquid natural gas to reduce the particle size of frozen odorant. In any event, the result is effective odorization of natural gas drawn from a liquid natural gas storage tank regardless of the amount of liquid and gaseous natural gas left in the tank.
    Type: Grant
    Filed: May 19, 1971
    Date of Patent: May 24, 1977
    Assignees: San Diego Gas & Electric Co., Dual Fuel Systems, Inc.
    Inventor: Jack R. Mazelli
  • Patent number: 3993444
    Abstract: A device having an open top container holding a quantity of a volatile paste like material within the interior of the container, which material is intermittently dispensed in vapor form to the ambient atmosphere. An electric circuit controlled motor is intermittently energized at predetermined time intervals to rotate a fan in the device for specific time periods to direct currents of air onto the exposed surface of the paste and transform the paste into vapor that is discharged outwardly from the container.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: November 23, 1976
    Inventor: Edward Leslie Brown