Patents by Inventor Hans Viessmann
Hans Viessmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5769001Abstract: A load transporting pallet made of paper, cardboard and/or cellulose fiber waste is disclosed. In order to improve the carrying capacity of such pallets, a supplementary reinforcement layer made of recyclable material is arranged between both layers that form the carrying surface and the mounting fee. The reinforcement layer is provided with passages distributed throughout its whole surface and through which the top and bottom layers are interconnected by their opposite rough surfaces.Type: GrantFiled: December 27, 1995Date of Patent: June 23, 1998Inventor: Hans Viessmann
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Patent number: 5505255Abstract: The invention is concerned with a heat-exchanger for arrangement behind the combustion chamber of a heating boiler. The heat-exchanger comprises water-carrying and gas-carrying interior chambers separated from one another by walls extending in parallel and being spirally coiled about a filling member and sealed against one another by bent edges.Type: GrantFiled: June 30, 1993Date of Patent: April 9, 1996Inventor: Hans Viessmann
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Patent number: 5474443Abstract: The invention relates to a radiant burner for boilers, consisting of a sheet metal support (1), with a gas feed line (3) leading to a gas inlet port (2) in the sheet metal support (1) and a curved burner surface (4) of wire cloth arranged at an opposite side of the sheet metal support. According to the invention, the burner surface (4) is of hemispherical shape and at least one similarly hemispherical gas distributor (5) of perforated sheet metal is arranged concentrically under the burner surface and is spaced therefrom at a distance (A) which is considerably smaller than the diameter (D) of the hemisphere of the burner surface (4) and is also affixed to the sheet metal support (1). The diameter (D.sub.1) of the gas inlet port (6) corresponds substantially to the diameter (D.sub.2) of the hemispherical gas distributor (5). Such a construction fulfills the requirements of a large gas inlet port, stability of the burner surface and good gas distribution over the burner surface.Type: GrantFiled: February 7, 1994Date of Patent: December 12, 1995Assignee: Viessmann Werke Gmbh & CoInventors: Hans Viessmann, Peter Hofbauer
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Patent number: 5087194Abstract: There is disclosed a blower-type burner for use with heating boilers which is effective for reducing NO.sub.x pollutants produced by flue gases. The device is mountable about an opening in a closure or sealing panel of a furnace body and provides for containment of the flue gas path within the burner. A separated dual impeller system provides for complete separation of the flue gas path from a combustion intake system.Type: GrantFiled: August 22, 1990Date of Patent: February 11, 1992Inventor: Hans Viessmann
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Patent number: 4955432Abstract: There is disclosed a hot gas flue pipe assembly designed for use inside a heating boiler. The assembly has an outer pipe and an inner pipe, and the outer pipe envelopes the inner pipe in such a way that circumferential contact deformations disposed at least in separate sub zones are capable of transferring heat between the two pipes. In order to prevent the occurrence of cracking noises during the flow of hot flue gases through the hot gas flue pipe, or at least to reduce such noises to an acceptable level, the inner pipe comprises one or more sections which, when inserted inside the outer pipe, define with their opposed ends, a circumferential gap that is filled with an elastic, heat-resistant and moisture-resistant cementitious material.Type: GrantFiled: April 25, 1989Date of Patent: September 11, 1990Inventor: Hans Viessmann
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Patent number: 4921163Abstract: The present invention relates to a method and an apparatus for controlling the temperature of heating and cooling plants having a heat or cooling source of adjustable rated temperature via particularly a microprocessor-controlled control system. The actual outside temperature determined by an outside temperature sensor is not used as reference temperature but instead there is used a theoretical mean outside temperature stored at specific scanning times of a calendar year. Said theoretical mean outside temperature is stored in the form of a characteristic diagram in a non-erasable memory for one or several climate zones.Type: GrantFiled: September 8, 1987Date of Patent: May 1, 1990Inventor: Hans Viessmann
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Patent number: 4652236Abstract: An atmospheric gas burner assembly comprises a burner tube defining a multiplicity of gas outlet ports and an element reducing the flame temperature and, hence, the emission of oxides of nitrogen disposed above the burner tube in the flame area. To optimize the reduction of NO.sub.x emission without affecting permitted CO values and to render the values of reduction in NO.sub.x emissions largely independent of the geometry of the surrounding combustion chamber so as to obtain reproducible emission reduction values, the reducing element is constituted by a multiplicity of fins confining the flames in shafts extending therebetween, the fins extending perpendicularly above the tube and being distributed along the tube.Type: GrantFiled: March 10, 1986Date of Patent: March 24, 1987Inventor: Hans Viessmann
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Patent number: 4351248Abstract: A heating boiler for substantially continuous controlled combustion of baled straw. The boiler includes a straw feed channel communicating with a combustion chamber having a combustion zone adjacent the rear wall of the combustion chamber, a flue gas heat exchange chamber above the combustion chamber in communication with a flue gas vent and an ash collecting pit below the combustion chamber. A horizontal floor is disposed between the combustion chamber and the ash collecting pit, the floor having a slot adjacent the rear wall of the combustion chamber for passage of ash from the combustion zone into the ash collecting pit and for intake of primary air into the combustion zone. A vertically rotatable ash stripper assembly extends from the rear wall of the combustion chamber, and serves to strip ash from the straw bale surface being combusted in the combustion zone. The ash stripper assembly can be rotated by means of a hollow shaft which also constitutes a secondary air intake.Type: GrantFiled: September 2, 1981Date of Patent: September 28, 1982Inventor: Hans Viessmann
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Patent number: 4327672Abstract: A fuel burning boiler comprises a water holding shell of sheet steel having front and rear walls defining axially aligned openings. An insert body passes through the openings and is affixed thereto, the water being held between the shell and insert body. The insert body includes a cast iron casing providing a combustion chamber in the interior thereof, defining ducts for combustion gases of the fuel burnt in the combustion chamber and a smoke box at the rear wall and in communication with the ducts for receiving the combustion gases therefrom, and a sheet steel casing forming a skin over the cast iron casing and tightly fitting thereover. The sheet steel casing is fluid tightly connected with the front and rear walls of the shell around the rims of the opening therein.Type: GrantFiled: February 12, 1980Date of Patent: May 4, 1982Inventor: Hans Viessmann
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Patent number: 4294198Abstract: A heating boiler is provided which includes a water jacket including front and rear walls with fuel flues being employed in the boiler. A tube is provided which extends through the water jacket and extends through the front and rear walls and encloses the aforesaid flues as well as defining a combustion chamber and a collecting chamber. A sleeve is provided in the vicinity of the collecting chamber and the tube and sleeve are in such a relationship that one encircles the other. A gap is defined between the tube and sleeve at least one of which is provided with a bulge adjacent the gap to increase the size of the gap between the tube and sleeve. The outermost of the tube and sleeve members is connected in a thermally conductive manner with the rear wall of the water jacket, and a closure is provided with respect to either the tube or the sleeve to obturate the collecting chamber. In one embodiment, the sleeve encircles the tube, and, in another embodiment, the tube encircles the sleeve.Type: GrantFiled: January 31, 1979Date of Patent: October 13, 1981Inventor: Hans Viessmann
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Patent number: 4242987Abstract: Connecting arrangement for a heating boiler, in whose water-bearing sheet-steel housing is arranged an installation casting consisting of a combustion chamber and fuel-gas ducts.For having a good and simple connection between the sheet-steel housing and the installation casting the improvement consists in that the front and rear wall of the sheet-steel housing are provided with an access opening and the opening edges are bent in the form of a collar, the inside diameter of the collar being rather smaller than the outside diameter of the seating faces of the installation casting and the front and rear wall being connected to the seating faces by a press fit.Type: GrantFiled: July 10, 1978Date of Patent: January 6, 1981Inventor: Hans Viessmann
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Patent number: 4192259Abstract: A steel heating boiler for liquid or gaseous fuels, with a water-bearing housing, between the front and rear walls of which is arranged in a liquid-tight manner a cylindrical installation unit consisting of combustion chamber and fuel-gas flues. The steel heating boiler which is intended for the operation of hot-water heating systems is distinguished by the fact that the installation unit, whose combustion chamber and fuel-gas flues are provided with a corrosion-resistant lining known per se, has on the inside end closure members included in the lining, whose outside diameter is larger than the outside diameter of the installation unit, the outer peripheral edges of the end closure members being connected to the opening edges of the front and rear walls in a liquid-tight way and at least the inside diameter of the burner-side end closure member being made smaller than the inside diameter of the installation unit.Type: GrantFiled: May 12, 1978Date of Patent: March 11, 1980Inventor: Hans Viessmann
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Patent number: 4169431Abstract: The fire box unit inserted into a water casing of a boiler includes a tubular cast iron body fluid-tightly mounted in the apertures of the end walls of the steel sheet casing. The cast iron body is shaped to converge frusto-conically from its inlet to its outlet end and has a plurality of radially inwardly extending webs. A combustion chamber shell is mounted in the inlet end of the cast iron body and has a fuel burner inlet for burning a fuel in the chamber defined by the shell. A closure wall opposite the fuel burner inlet deflects the combustion gases of the burnt fuel towards the fuel burner inlet where the deflected gases are received in a gas guide chamber. The shell with the gas guide chamber and a gas collecting chamber adjacent the closure wall at the outlet end of the cast iron body is supported on the webs and defines therewith gas flues leading from the gas guide to the gas collecting chamber.Type: GrantFiled: May 15, 1978Date of Patent: October 2, 1979Inventor: Hans Viessmann
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Patent number: 4157698Abstract: A boiler comprises a water-carrying housing of sheet steel and a thin-walled cast iron casing arranged within the housing and having regions connected by condensate which are not machined. The casing includes a plurality of radial webs cast on the casing and supporting a sleeve defining a combustion chamber for the combustion of fuel. A guide chamber and a collecting chamber are defined by the casing adjacent opposite ends of the sleeve, the guide chamber being arranged to receive the combustion gases from the combustion chamber and the webs defining therebetween flow ducts connecting the guide and collecting chambers for conducting the combustion gases to the collecting chamber. The casing extends beyond the two end walls of the housing and the end walls form a liquid-tight connection with the casing. The webs extend into the guide and collecting chambers, the height of the web portions in the guide and collecting chambers not exceeding that of the web portions supporting the sleeve.Type: GrantFiled: October 5, 1977Date of Patent: June 12, 1979Inventor: Hans Viessmann
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Patent number: 4120250Abstract: A connecting structure for shelves comprising horizontally-disposed distributing trays detachably affixed to vertical supporting members. The trays are provided with bent edges and with plastic elbows to cover the corner gaps of adjacent flank faces. The elbows have openings therein for screwing the trays to the supporting members.Type: GrantFiled: May 16, 1977Date of Patent: October 17, 1978Inventor: Hans Viessmann
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Patent number: 4109614Abstract: A boiler for the combustion of liquid or gaseous fuels comprises a water-carrying housing in which is provided a cylindrical chamber for receiving the combustion chamber and the fuel gas flues, with a reversion chamber coupled ahead thereof, and with the chamber being surrounded by a plurality of circumferentially distributed flue channels disposed in spaced and side-by-side relationship and in cross section formed by approximately U-shaped sheet metal profiles, which channels are in communication with a flue gas collecting chamber provided with a flue gas discharge and are connected by longitudinal welding seams to the inner wall of the cylindrical chamber.Type: GrantFiled: March 28, 1977Date of Patent: August 29, 1978Inventor: Hans Viessmann
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Patent number: 4102309Abstract: A water boiler comprising a housing for the water, which is comprised of front, rear and side walls, the side wall ends being connected to the rear and front walls by external fillet weld seams. A tube is mounted in outwardly flaring apertures in the front and rear walls, and the opposite tube ends protude beyond these walls and are connected thereto by external fillet weld seams. The tube consists of a sheet metal blank having two abutting edges extending the length of the tube and an external weld seam fluid-tightly connects the abutting edges between two adjacent ones of a plurality of circumferentially spaced and longitudinally extending sheet metal profiles affixed to the inner surface of the tube. A combustion chamber is mounted within the tube and is surrounded by the sheet metal profiles which operate as flues for combustion gases generated therein.Type: GrantFiled: November 17, 1976Date of Patent: July 25, 1978Inventor: Hans Viessmann