Patents by Inventor Brian Nielsen

Brian Nielsen 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: 20080184875
    Abstract: A valve assembly (2) forming a bridge circuit and a hydraulic actuator comprising at least one valve assembly (2) are disclosed. The valve assembly (2) is fluidly connectable between a fluid source (3) and a fluid drain (4). The valve assembly (2) comprises a first valve (8) fluidly connected between the fluid source (3) and a first diagonal point (12) of the bridge circuit, a second valve (9) fluidly connected between the fluid source (3) and a second diagonal point (13) of the bridge circuit, a third valve (10) fluidly connected between the first diagonal point (12) and the fluid drain (4), and a fourth valve (11) fluidly connected between the second diagonal point (13) and the fluid drain (4). The valves (8, 9, 10, 11) are such that in the case of a power cut off, flows of fluid away from the diagonal points (12, 13) are prevented.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Applicant: Sauer-Danfoss ApS
    Inventor: Brian Nielsen
  • Publication number: 20080184876
    Abstract: A hydraulic actuator for a hydraulic servomotor 4 is disclosed. The hydraulic servomotor 4 has a first chamber 5 and a second chamber 6 associated therewith. The hydraulic actuator is connected to a fluid source 2 and a fluid drain 3, and it comprises a valve assembly arranged between the fluid source 2 and the fluid drain 3 to control fluid pressures in the chambers 5, 6. At least one auxiliary valve 11 is fluidly connected between the valve assembly and the fluid drain 3, said auxiliary valve(s) 11 being of a kind which is normally closed in a de-energized state. In the case of a power cut off the auxiliary valve(s) 11 will close, thereby preventing fluid flow from the valve assembly towards the fluid drain 3. This causes a servomotor piston member 12 to be hydraulically locked in its instantaneous position, thereby locking the hydraulic servomotor 4. The valve assembly may be designed without taking the locking function into consideration.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Applicant: Sauer-Danfoss ApS
    Inventor: Brian Nielsen
  • Publication number: 20080184874
    Abstract: A hydraulic actuator for a hydraulic servomotor (4) is disclosed. The hydraulic servomotor (4) is of a kind having at least one defined end position, and has a first chamber (5) and a second chamber (6) associated therewith. The actuator is connected to a fluid source (2) and a fluid drain (3). The actuator comprises a first valve (7) fluidly connected between the fluid source (2) and the first chamber (5), a second valve (8) fluidly connected between the first chamber (5) and the fluid drain (3), and a third valve (9) fluidly connected between the fluid source (2) and the second chamber (6). The actuator further comprises a flow channel (10, 17), preferably comprising a flow restrictor (12, 18), in fluid communication with the second chamber (6). The valves (7, 8, 9) are such that, in the case of a power cut off, they will prevent a fluid flow out of the first chamber (5), and a fluid flow out of the second chamber (6) takes place via the flow channel (10, 17).
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Applicant: Sauer-Danfoss ApS
    Inventors: Brian Nielsen, Ole Ploug, Chad M. Patterson
  • Publication number: 20080152697
    Abstract: A medical dressing comprising a complex of silver and being capable of releasing antimicrobial silver ion activity, said complex comprising silver and a transition element of Group IV of the periodic system of elements enables a controlled release of silver ion activity to a wound bed.
    Type: Application
    Filed: January 4, 2008
    Publication date: June 26, 2008
    Inventor: Brian Nielsen
  • Patent number: 7334609
    Abstract: A flexible tubular device that includes a metal wall in which are formed corrugated convolutions that define corrugated outside and inside surfaces of the device. The convolutions are perpendicular to a longitudinal axis of the device, and each convolution has oppositely-disposed rounded top and bottom portions. The outside surface of the device has first and second sections with change positions therebetween. Each first section extends from one of the change positions to another via one of the top portions. Each second section extends from one of the change positions to another via one of the bottom portions. The length of each first section is at least 10% longer than the length of each second section. The outside surface has a curvature that is numerically smaller at the top portions than at the bottom portions, and changes sign only once at each change position.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: February 26, 2008
    Assignee: Norsk Hydro ASA
    Inventors: Henry Petersen, Soren B. Olsen, Karl Brian Nielsen
  • Patent number: 7329417
    Abstract: A medical dressing comprising a complex of silver and being capable of releasing antimicrobial silver ion activity, the complex comprising silver ion, a transition element of Group IV of the periodic system of elements, cation, phosphate and hydrogen to enable a controlled release of silver ion activity to a wound bed.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: February 12, 2008
    Assignee: Coloplast A/S
    Inventor: Brian Nielsen
  • Publication number: 20070223756
    Abstract: Attachment means for attaching a conductor to a hearing aid having a hearing aid housing. The attachment means is adapted to be located partially in said hearing aid housing wall, so as to have a first part located in said hearing aid housing wall and a second part protruding through an aperture in said hearing aid housing wall.
    Type: Application
    Filed: March 21, 2006
    Publication date: September 27, 2007
    Applicant: WIDEX A/S
    Inventor: Dennis Brian Nielsen
  • Patent number: 7243591
    Abstract: The invention concerns a hydraulic valve arrangement (1) with a working connection arrangement having a first working connection (A) and a second working connection (B), both working connections (A, B) being connectable with a hydraulic consumer (2), a supply connection arrangement having a pressure connection (P) and a tank connection (T), a first valve arrangement with a first valve (12), closing the pressure connection (P) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), a second valve arrangement with a second valve (16), closing the tank connection (T) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), and a control arrangement controlling the first valve arrangement and the second valve arrangement. In such a valve arrangement, it is endeavoured to achieve improved operation behaviour.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: July 17, 2007
    Assignee: Sauer-Danfoss Aps
    Inventors: Carl Christian Dixen, Brian Nielsen
  • Patent number: 7219592
    Abstract: The invention concerns a valve arrangement for controlling a hydraulic drive, the supply to and the outflow from the hydraulic drive being separately controllable. It is endeavoured to realise separate controls of the speed and the hydraulic pressure of the hydraulic drive. For this purpose, a pump pipe is connected with a first control valve, the first control valve is connected through a pipe with a first working connection and a second working connection of the hydraulic drive, and the first working connection is connected with a second control valve and the second working connection is connected with a third control valve, the second control valve and the third control valve opening into a tank (T).
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 22, 2007
    Assignee: Sauer-Danfoss ApS
    Inventors: Brian Nielsen, Poul Erik Hansen, Torben Ole Andersen
  • Patent number: 7146228
    Abstract: The present invention concerns an electrode for establishing electrical contact with the skin. The electrode comprises an electrically conductive gel (12) covering a part of a first side of an electrically conductive layer (4) and an electrically conductive by-pass element (19). The by-pass element extends, on the second side of the electrically conductive layer, over the circumference of the gel on the first side and is in electrical contact with the second side of the electrically conductive layer at a point opposing an area covered with electrically conductive gel at the first side of the electrically conductive layer. The by-pass element ensures that the electrode continues to be operable even if exposed to chemical or mechanical stress.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: December 5, 2006
    Assignee: Medicotest A/S
    Inventor: Brian Nielsen
  • Patent number: 7141714
    Abstract: Wound care device comprising chitosan, said chitosan being capable of absorbing liquid to form a swollen, coherent gel, and said chitosan being in the form of fibres having been modified by treatment with acid in a solvent which is not able to dissolve the chitosan fibres and by treatment with heat.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: November 28, 2006
    Assignee: Coloplast A/S
    Inventor: Brian Nielsen
  • Patent number: 7134380
    Abstract: The invention concerns a valve arrangement for controlling a hydraulic drive, the supply and the outflow of the hydraulic drive being separately controllable. It is endeavoured to improve the valve arrangement in such a manner that it is intrinsically tight, at the same time having a relatively simple design. For this purpose, a pump pipe and a tank pipe are connected with a first control valve, the first control valve being connected by separate pipes with a second control valve and a third control valve connected in parallel with the second control valve, the second control valve being connected with a first working connection of the hydraulic drive and the third control valve being connected with a second working connection of the hydraulic drive, backflow preventers for preventing the flow from the hydraulic drive in the direction of the tank being connected in parallel with the second control valve and/or the third control valve.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: November 14, 2006
    Assignee: Sauer-Danfoss ApS
    Inventors: Brian Nielsen, Poul Erik Hansen, Torben Ole Andersen
  • Publication number: 20060211972
    Abstract: A wound dressing comprising a web of gel-forming fibers or fibers soluble in wound exudates, attached to a reinforcing layer wherein the density of the web is in the range of 5-60 g/m2. The dressing may serve as a wound-contacting layer, providing moist wound healing combined with easy, non-traumatic removal from the wound site. The dressing may further comprise one or more active ingredients.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 21, 2006
    Inventors: Brian Nielsen, Maria Severin
  • Patent number: 7080590
    Abstract: The invention concerns a valve arrangement for controlling a hydraulic drive having a first working connection (A) and a second working connection (B), and being connectable with or separable from a pressure source (P), the supply and the outflow of the hydraulic drive being separately controllable. It is endeavoured to improve the energetic efficiency of the valve arrangement. For this purpose, the first working connection (A) is connected with a first control valve and the second working connection (B) is connected with a second control valve, the first and the second control valves being connected with each other and with a third control valve, which is connected with a tank.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: July 25, 2006
    Assignee: Sauer-Danfoss ApS
    Inventors: Brian Nielsen, Poul Erik Hansen, Torben Ole Andersen
  • Patent number: 7066446
    Abstract: A hydraulic valve arrangement with a first and a second working connection, both working connections being connectable with a hydraulic consumer, a supply connection having a pressure connection and a tank connection, a first valve, which closes the pressure connection or connects it in a controlled manner with the first working connection or the second working connection, a second valve, which closes the tank connection or connects it in a controlled manner with the first or the second working connection, and a control device, which controls the first valve and the second valve. It is endeavored to enable a simple manner of exact controlling the consumer. For this purpose, at least one valve is provided with an opening degree sensor, which is connected with the control device, the control device controlling the valve arrangement in dependence of the signal from the opening degree sensor and a specified signal.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: June 27, 2006
    Assignee: Sauer-Danfoss ApS
    Inventor: Brian Nielsen
  • Publication number: 20060081121
    Abstract: The invention concerns a hydraulic valve arrangement (1) with a working connection arrangement having a first working connection (A) and a second working connection (B), both working connections (A, B) being connectable with a hydraulic consumer (2), a supply connection arrangement having a pressure connection (P) and a tank connection (T), a first valve arrangement with a first valve (12), closing the pressure connection (P) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), a second valve arrangement with a second valve (16), closing the tank connection (T) or connecting it in a controlled manner with the first working connection (A) or the second working connection (B), and a control arrangement controlling the first valve arrangement and the second valve arrangement. In such a valve arrangement, it is endeavoured to achieve improved operation behaviour.
    Type: Application
    Filed: October 7, 2005
    Publication date: April 20, 2006
    Applicant: Sauer-Danfoss Aps
    Inventors: Carl Dixen, Brian Nielsen
  • Patent number: 6998509
    Abstract: Wound care device comprising chitosan, said chitosan being capable of absorbing liquid to form a swollen, coherent gel, and said chitosan being in the form of fibers having been modified by treatment with acid in a solvent which is not able to dissolve the chitosan fibers and by treatment with heat.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: February 14, 2006
    Assignee: Coloplast A/S
    Inventor: Brian Nielsen
  • Publication number: 20050192064
    Abstract: A communication device comprising a keymat, a cover, and a substrate comprising a plurality of key switches is disclosed. The keymat comprises a plurality of lips located at the edges of the keymat. The cover comprises a plurality of indentations configured to receive the plurality of lips. The indentations are located at the edges of a recess for removably mounting the keymat.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Paul Thomas, Morten Saxbol, Brian Nielsen
  • Publication number: 20050072954
    Abstract: The invention concerns a hydraulic valve arrangement with a working connection arrangement having a first working connection and a second working connection, both working connections being connectable with a hydraulic consumer, a supply connection arrangement having a pressure connection and a tank connection, a first valve arrangement, which closes the pressure connection or connects it in a controlled manner with the first working connection or the second working connection, a second valve arrangement, which closes the tank connection or connects it in a controlled manner with the first working connection or the second working connection, and a control device, which controls the first valve arrangement and the second valve arrangement. It is endeavoured to enable a simple manner of exact controlling the consumer.
    Type: Application
    Filed: September 20, 2004
    Publication date: April 7, 2005
    Applicant: Sauer-Danfoss ApS
    Inventor: Brian Nielsen
  • Patent number: D525362
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: July 18, 2006
    Assignee: Ambu A/S
    Inventors: Brian Nielsen, Mette Merete Andersen, Mirjam Marquard Mortensen, Per Vagnholm, Lasse Kjeld Gjøske Petersen, Claus Nicolaisen, Henrik Nielsen, Henrik Holbæk, Claus Jensen