| Patents for F24H 9 - Details (27,146) |
|---|
| 11/29/1990 | DE3916860A1 Electromagnetic non-return valve for fluctuating pressure pipeline - comprises servo-valve and directly-acting electromagnetic valve with opposed spring-biased armatures, differential piston and disc seal |
| 11/29/1990 | DE3916847A1 Electrical corrosion protection for water container - has e.g. water heater element as anode and container wall as cathode with pole-reversal protection diode between their connectors |
| 11/27/1990 | US4972759 Thermal insulation jacket |
| 11/22/1990 | EP0398454A2 Improved water heater construction |
| 11/20/1990 | US4971026 Self-cleaning air filter system |
| 11/15/1990 | DE3925031A1 Pipe fitting for central heating radiator - has two tapped holes to provide alternative positions for radiator valve |
| 11/15/1990 | DE3915083A1 Room heater with motor driven fan - has air inlet grill and outlet grill with one protection protruding outwards to prevent suction of cover sheet |
| 11/14/1990 | EP0397586A1 Boiler section for low temperature heating boiler |
| 11/13/1990 | US4970373 Electronic temperature control system for a tankless water heater |
| 11/07/1990 | CN2065302U Small-size heating furnace for civil housing |
| 11/07/1990 | CN2065301U Renewable back-fire furnace |
| 10/30/1990 | CA1275678C Heater control for liquid flowing through a chamber |
| 10/24/1990 | CN2064483U Fuel warmers using infrared rays |
| 10/24/1990 | CN1046383A Fullautomatic electric boiler for carriage of passenger train |
| 10/23/1990 | US4964394 Water heater with heat trap in dip tube |
| 10/20/1990 | WO1990012988A1 Hot water heaters |
| 10/20/1990 | CA2053286A1 Hot water heaters |
| 10/17/1990 | EP0392634A2 Heatable domestic water storage |
| 10/17/1990 | EP0392191A1 Hot air gun |
| 10/17/1990 | CN2064032U Dual purpose stove for burning shapped coal or broken coal |
| 10/10/1990 | CN1046036A Heat recovery system from liquid |
| 10/03/1990 | EP0390656A1 Boiler with water tubes and heating installation equipped with such a boiler |
| 10/03/1990 | EP0390326A2 Gas heating unit and electrical control circuit therefor |
| 10/03/1990 | CN2063209U Constant temp. tea-urn stove firing anthracite briquet and having internal boiling water container |
| 10/03/1990 | CN1045858A Fully automatic universal boiler and component jigs thereof for cooking and daily use in a safety series of different sizes |
| 10/02/1990 | US4960105 Sun operated boiler for heating liquids |
| 09/26/1990 | CN2062803U Water circulating compensator of rear arch pipe |
| 09/26/1990 | CN2062802U Gas water heating boiler |
| 09/26/1990 | CN2062799U Fast gas water heater |
| 09/26/1990 | CN1009754B Steam generator feed water heater |
| 09/25/1990 | US4959526 Storage type electric water heater having a closed circulation loop with a bubble pump |
| 09/20/1990 | WO1990010831A1 Fan heater controller |
| 09/19/1990 | EP0387584A2 Heating gas draft tube |
| 09/12/1990 | CN2062029U Fast energy-saving common pressure tea-stove |
| 09/12/1990 | CN2062028U Smoke / dust eliminating high-effective tea-stove |
| 09/11/1990 | US4955573 Water heater safety fastener |
| 09/06/1990 | DE3906603A1 Electric flow heater |
| 09/05/1990 | EP0385137A2 Boiler equipped with a downstream burner |
| 09/05/1990 | CN2061674U Coal-fired hot water boiler |
| 09/05/1990 | CN2061673U Boiled water heater for making tea |
| 09/04/1990 | US4953510 Apparatus and method for heating water |
| 08/29/1990 | EP0384423A1 Hot water accumulator with a heat exchanger for sanitary water as well as an exterior heating element and a distributor for the inflowing water |
| 08/29/1990 | CN1044980A Method and equipment for heat-exchange working medium to absorb heat at normal pressure and to evolute heat at abnormal pressure |
| 08/28/1990 | US4951651 Vent overpressurization detection system for a fuel-fired, induced draft furnace |
| 08/28/1990 | US4951614 Water heater construction |
| 08/23/1990 | WO1990009547A1 Thermal insulation jacket |
| 08/22/1990 | EP0382893A1 A free-flame atmospheric detector |
| 08/22/1990 | CN2060943U Temperature-controlling switches utilizing shape-memorizing alloy for electric boiler |
| 08/22/1990 | CA2009379A1 Gas heating unit and electrical control circuit therefor |
| 08/21/1990 | US4949680 Water heater having filling dip tube |
| 08/21/1990 | CA1272914A1 Direct power vented water heater |
| 08/16/1990 | EP0382315A2 Vacuum distillation device |
| 08/16/1990 | EP0381738A1 Sacrificial anode with consumption indicator and iron core for water tanks and water heaters |
| 08/16/1990 | DE3904463A1 Electric water heater |
| 08/16/1990 | DE3903112A1 Water heater |
| 08/16/1990 | DE3903110A1 Water fitting |
| 08/15/1990 | CN2060528U Spacer double-burning furnace |
| 08/15/1990 | CN2060527U Vertical double furnace tank coal hot-blast stove |
| 08/14/1990 | US4948948 Water heater with multiple heating elements having different power |
| 08/09/1990 | DE4002502A1 Domestic water heating system - has boiler circuit controlled by thermostatically activated pump which by passes radiator circuit |
| 08/07/1990 | US4946098 Central heating installation with a hot water circuit for domestic usage |
| 08/07/1990 | US4945890 Induced draft warm air furnace with radiant infrared burner |
| 08/02/1990 | DE3902400A1 Electric water heater |
| 08/02/1990 | DE3902345A1 Electrical water heater |
| 08/01/1990 | EP0380140A2 Method and device for injection of a liquid into the human or animal body as well as method and heating device for temperature control |
| 08/01/1990 | EP0379873A2 Apparatus for heating gases |
| 08/01/1990 | CN2059975U Autocontrol steam heater |
| 08/01/1990 | CN2059973U Box-type layered briquet hot water boiler |
| 08/01/1990 | CN2059972U Household economizing multifunction boiler |
| 07/31/1990 | US4944454 Heater, in particular vehicle auxiliary heater, with a temperature safety mechanism |
| 07/31/1990 | US4944253 Safety system for hydronic water heaters and boilers |
| 07/26/1990 | DE4000710A1 Electric control of fuel supply to boiler of hot water heating plant - using magnetic valve to control fuel supply to burner and switch contact in current line to valve coil operated by thermostat |
| 07/26/1990 | DE3918019C1 Boiler exhaust gas temp. controller - has insert body element moving along length of boiler, to control or free flow channels |
| 07/26/1990 | DE3902113A1 Water heater for the thermal destruction of legionellae |
| 07/25/1990 | CN2059726U Back-burning coal briquet boiling water supplying boiler with two layer grate |
| 07/24/1990 | US4942863 Thermoelectric generator for use in a heater and method of installation |
| 07/18/1990 | EP0377797A2 Heating appliance, especially a heating appliance for a vehicle |
| 07/12/1990 | DE3900322A1 Water heating boiler |
| 07/12/1990 | DE3900284A1 Method for determining the water throughput through an electrically heated instantaneous water heater |
| 07/11/1990 | CN2059231U Verticle internal combustion oxygen spray hot water boiler |
| 07/11/1990 | CN2059230U Hot water steam boiler burnt at the botton |
| 07/11/1990 | CN2059229U Household boiler with smoke inhibition and dust removing feature |
| 07/11/1990 | CN2059225U Multi-functional gas burning water heater |
| 07/10/1990 | US4940041 Heater having a casing with an integrally cast mounting space for control components |
| 07/10/1990 | US4940024 Hot water heater |
| 07/04/1990 | EP0375962A2 Hot-water apparatus |
| 07/04/1990 | CN2058971U Gas firing stove for warming |
| 07/03/1990 | US4938283 Bell orifice plate for inshot combustion furnace |
| 06/28/1990 | WO1990007075A1 A method and an arrangement for installing a heating pipe |
| 06/28/1990 | DE3843127A1 Control device for the current flow through the heating filament of a tubular heater |
| 06/26/1990 | US4936260 Boiler or water heater with insulated water tank |
| 06/21/1990 | DE3842463A1 Heating device (heater, radiator) |
| 06/20/1990 | CN2058472U Fusing protective type water electric heater |
| 06/12/1990 | CA1270289A1 Electrode boiler for producing steam or hot water |
| 06/12/1990 | CA1270288A1 Electrode boiler for producing steam or hot water |
| 06/06/1990 | CN2058002U Automatic pulse igniter of flow water heater |
| 06/06/1990 | CN2058001U Verticle double-layer fire grate back-burning tea/bath boiler of removing smoke and saving coal |
| 06/06/1990 | CN2057998U Tea stove |
| 05/31/1990 | DE3840210A1 Continuous-flow water heater device for determination and adjustment of the quantity of water |
| 05/30/1990 | CN2057737U Up opened self-restraining water-sealing safety device |