Patents by Inventor Ulf Hagstrom

Ulf Hagstrom 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).

  • Publication number: 20150292737
    Abstract: A supply device for supplying solid particles and a carrier fluid to a heat generating plant combustion chamber. The supply device has a first end, a second end, a tube, an opening through the tube at the first end, and a supply pipe. A first end of the pipe is proximal to the first end of the supply device and has an opening defining an outlet of the pipe. A second end of the pipe is distal to the first end of the supply device, has an opening defining an inlet of the pipe, and is connected to an inside surface of the tube. The supply pipe defines a curved flow channel within the tube, and the flow channel at the outlet of the pipe has a direction towards the opening through the tube which is at an angle to the longitudinal axis of the supply device.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 15, 2015
    Inventor: Ulf Hagström
  • Publication number: 20140356794
    Abstract: A supply tube assembly has a central longitudinal axis, a first end and a second end and includes a supply pipe extending in parallel with the central longitudinal axis from the second end of the supply tube assembly to the first end of the supply tube assembly. The supply pipe is open to form a pipe outlet at the first end. The supply pipe is configured for transporting solid particles carried by a fluid from the second end to the pipe outlet. A ramp arranged inside the supply pipe at the pipe outlet and pivotably arranged such that the inclination of the ramp in relation to the longitudinal axis is adjustable by pivoting the ramp about a pivot axis which is perpendicular to the central longitudinal axis, with the ramp extending from said pivot axis towards the pipe outlet.
    Type: Application
    Filed: October 11, 2012
    Publication date: December 4, 2014
    Applicant: ECOMB AB (PUBL)
    Inventor: Ulf Hagstrom
  • Patent number: 6712606
    Abstract: The present invention relates to a method and a device for reducing emission from a combustion or gasification plant, said plant having an combustion chamber housing means for insertion of a first fluid into said chamber, introduction of said fluid into said chamber being effective to reduce the emission of at least one substance from said combustion and said fluid having an optimal operating temperature range for which emissions are particularly low. The temperature is established in a volume in said combustion chamber, where said volume includes the position for insertion of said first fluid. A second fluid is inserted into said combustion chamber and is effective to reduce the temperature in said volume in said combustion chamber, if said temperature is established to be higher than said optimal temperature range.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: March 30, 2004
    Assignee: Ecomb AB
    Inventors: Ulf Hagström, Eric Norelius
  • Publication number: 20030124477
    Abstract: The present invention relates to a method and a device for reducing emission from a combustion or gasification plant, said plant having an combustion chamber housing means for insertion of a first fluid into said chamber, introduction of said fluid into said chamber being effective to reduce the emission of at least one substance from said combustion and said fluid having an optimal operating temperature range for which emissions are particularly low. The temperature is established in a volume in said combustion chamber, where said volume includes the position for insertion of said first fluid. A second fluid is inserted into said combustion chamber and is effective to reduce the temperature in said volume in said combustion chamber, if said temperature is established to be higher than said optimal temperature range.
    Type: Application
    Filed: November 15, 2002
    Publication date: July 3, 2003
    Applicant: ECOMB AB
    Inventors: Ulf Hagstrom, Eric Norelius
  • Patent number: 5394459
    Abstract: A malfunction position detection system is disclosed for a modular telecommunication facility. Each telecommunication facility is constructed out of a plurality of modular cabinets which are positioned in a station rack. The malfunction position detection system includes switches for setting the position of each cabinet in the station rack. The cabinet position is read off of a bus connected to the switches by a plurality of electronic units connected to the cabinet. The cabinet position is stored in some of the electronic units. As a result, the cabinet position can be sent along with an error message to the cellular system when an error occurs.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: February 28, 1995
    Assignees: Telefonaktiebolaget L M Ericsson, Ericsson GE Mobile Communications Inc.
    Inventors: Hakan O. Djuphammar, Sven E. Nilsson, Ulf Hagstrom
  • Patent number: 4850333
    Abstract: A grill comprises a heating chamber (2) for broiling food (18). The heating chamber has located on the sides thereof a respective space (5) which accommodates a heat source (6), such as charcoal. The heat source (6) delivers radiant heat uniformly to the food (18), and the formation of carcinogenic substances as a result of pyrolysis is avoided by constructing the bottom part of the heating chamber in a manner to cool fat which drips down from the broiled food. To this end the bottom part of the heating chamber may be provided with a withdrawable vessel (8) filled with a liquid (9). The heat-source accommodating space (5) is delimited on the heating-chamber side by a net or lattice structure (4) and has a bottom surface (14) which slopes obliquely downwards and inwards towards the liquid-filled vessel (8). Pre-heated combustion air is delivered to the space (5) through a channel (16) location beneath the space. The central part of the grill may have a rectangular or circular cross-sectional shape.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: July 25, 1989
    Assignee: Komfortventilation Teknik AB
    Inventors: Rolf Dellrud, Ulf Hagstrom