Patents by Inventor Sten Drennow

Sten Drennow 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).

  • Patent number: 10966769
    Abstract: A device for mixing and dispensing a paste, such as bone cement, comprises a housing (H) with a feeding mechanism (53), and a cylinder (51) for mixing a powder component and a liquid component forming the paste. A piston assembly includes a paste feeding member (57) located in the cylinder, and a tubular member (54). A mixing member (55) is located in the cylinder (51), and a mixing rod (52) extends within the tubular member (54) of the piston assembly. The mixing rod (52) is movable in the tubular member (54) of the piston assembly. The tubular member (54) is provided with external engagement means (T) by which the paste feeding member (57) is movable within the cylinder (51) in a feeding direction. The feeding movement is operated by the feeding mechanism.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: April 6, 2021
    Assignee: STENHUS I LUND AB
    Inventors: Ulf Larsson, Sten Drennow
  • Patent number: 9968392
    Abstract: An assembly for preparing and dispensing a paste, preferably bone cement, includes a cylinder containing a powder and a receptacle containing a liquid. A piercing device is configured to open the receptacle to allow liquid to flow into the cylinder to be mixed with the powder. The receptacle is collapsed by a differential pressure between the cylinder and the receptacle.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 15, 2018
    Assignee: PROMIXA MEDICAL AB
    Inventors: Staffan Grebius, Sten Drennow, Ulf Larsson
  • Publication number: 20180125557
    Abstract: A device for mixing and dispensing a paste, such as bone cement, comprises a housing (H) with a feeding mechanism (53), and a cylinder (51) for mixing a powder component and a liquid component forming the paste. A piston assembly includes a paste feeding member (57) located in the cylinder, and a tubular member (54). A mixing member (55) is located in the cylinder (51), and a mixing rod (52) extends within the tubular member (54) of the piston assembly. The mixing rod (52) is movable in the tubular member (54) of the piston assembly. The tubular member (54) is provided with external engagement means (T) by which the paste feeding member (57) is movable within the cylinder (51) in a feeding direction. The feeding movement is operated by the feeding mechanism.
    Type: Application
    Filed: May 25, 2016
    Publication date: May 10, 2018
    Inventors: Ulf LARSSON, Sten DRENNOW
  • Publication number: 20160251125
    Abstract: The present invention relates to a dispensing valve (1) adapted to allow dispensing of a product (2), preferably a food product, for example a beverage, from a container (3) which is preferably closed and has the ability to collapse when product is dispensed therefrom. The dispensing valve has an elastic membrane (7) with one or more valves (1a), which is/are closed when the membrane (7) assumes an initial position (A), and is/are open when the membrane assumes a stretched position (B) to allow dispensing of the product out of the container. When the membrane assumes its initial position (A), the valve (1a) or valves have contact with at least one support member (15), which prevents the valve (1a) or valves from opening, whereby air is prevented from passing through the valve (1a) or valves to product (2) present in said valve or valves.
    Type: Application
    Filed: October 24, 2014
    Publication date: September 1, 2016
    Inventors: Sten Drennow, Stefan Cedergren, Rickard Truedsson
  • Publication number: 20160038209
    Abstract: An assembly for preparing and dispensing a paste, preferably bone cement, includes a cylinder containing a powder and a receptacle containing a liquid. A piercing device is configured to open the receptacle to allow liquid to flow into the cylinder to be mixed with the powder. The receptacle is collapsed by a differential pressure between the cylinder and the receptacle.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 11, 2016
    Inventors: Staffan GREBIUS, Sten DRENNOW, Uif LARSSON
  • Patent number: 9199834
    Abstract: The present invention relates to a dispensing device for dispensing a liquid foodstuff product from a container, wherein a hose member of elastic and resilient material is connectable with the container such that product can be made to flow from the container into the hose member. The hose member is compressible in order to dispense product therefrom and it is designed so as to regain, by its own resilience, an original shape after compression thereof. A check valve is arranged to close in order to prevent product, upon compressing the hose member, from flowing back from the hose member to the container, and a discharge valve is arranged to open so as to allow dispensing of product from the hose member and to close when so done.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: December 1, 2015
    Assignee: Aspet International AB
    Inventor: Sten Drennow
  • Publication number: 20140367422
    Abstract: The present invention relates to a dispensing device for dispensing a liquid foodstuff product from a container, wherein a hose member of elastic and resilient material is connectable with the container such that product can be made to flow from the container into the hose member. The hose member is compressible in order to dispense product therefrom and it is designed so as to regain, by its own resilience, an original shape after compression thereof. A check valve is arranged to close in order to prevent product, upon compressing the hose member, from flowing back from the hose member to the container, and a discharge valve is arranged to open so as to allow dispensing of product from the hose member and to close when so done.
    Type: Application
    Filed: December 7, 2012
    Publication date: December 18, 2014
    Applicant: Asept International AB
    Inventor: Sten Drennow
  • Patent number: 8602267
    Abstract: The present invention relates to a device for discharge of liquid or substantially liquid products (2), preferably foodstuffs, e.g. mayonnaise, mustard, ketchup or dressing, from a compressible container (3) made of flexible material, preferably of plastic bag type. The container (3) is placed in an outer container (7) and is compressible by a compression device (4) in order to feed product (2) out therefrom through a nozzle (6). The invention is characterised in that a compression means (9) which forms part of the compression device (4) is disposed on a piston (17) adapted to being subjected to movements in a portioning direction (P3) so that the movable compression means (9) squeezes the container (3) in the outer container (7), and that the piston with its compression means (9) can perform a return movement in a return direction (P4) which is opposite to the portioning direction (P3).
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: December 10, 2013
    Assignee: Asept International AB
    Inventors: Sten Drennow, Stefan Cedergren
  • Publication number: 20130001256
    Abstract: The present invention relates to a device for discharge of liquid or substantially liquid products (2), preferably foodstuffs, e.g. mayonnaise, mustard, ketchup or dressing, from a compressible container (3) made of flexible material, preferably of plastic bag type. The container (3) is placed in an outer container (7) and is compressible by a compression device (4) in order to feed product (2) out therefrom through a nozzle (6). The invention is characterised in that a compression means (9) which forms part of the compression device (4) is disposed on a piston (17) adapted to being subjected to movements in a portioning direction (P3) so that the movable compression means (9) squeezes the container (3) in the outer container (7), and that the piston with its compression means (9) can perform a return movement in a return direction (P4) which is opposite to the portioning direction (P3).
    Type: Application
    Filed: November 23, 2010
    Publication date: January 3, 2013
    Applicant: ASEPT INTERNATIONAL AB
    Inventors: Sten Drennow, Stefan Cedergren
  • Patent number: 8220662
    Abstract: A device for feeding out liquid or substantially liquid contents from a storage container (2) comprises an outfeed container (3) for the storage container and a discharge means (6) for outfeed of the contents from the storage container by squeezing it. The storage container (2) has an inner connecting element (7) for connection to an outer connecting element (8) by the latter's penetration of the container wall at the inner connecting element. The storage container (2) is connected via the outer connecting element (8) to a valve means (9) with a valve body (10) which in a resting position abuts against a valve seat and which, for outfeed, is open able by the contents of the storage container being pressed against the valve body so that the latter leaves the valve seat. The valve body (10) has elastic properties and a normal shape when it abuts against the valve seat so that it closes the valve means (9). For outfeed, the valve body (10) assumes a stretched shape and leaves the valve seat.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: July 17, 2012
    Assignee: Asept International AB
    Inventor: Sten Drennow
  • Patent number: 8033427
    Abstract: The present invention concerns a coupling arrangement for coupling a withdrawal arrangement (4) to a package (1) with liquid or essentially liquid contents (3), which withdrawal arrangement (4) is intended for the removal of the contents (3) from the package (1). The coupling arrangement (5) comprises not only an inner coupling device (9) that is arranged within the package (1) but also an outer coupling device (12) that is arranged on the withdrawal arrangement (4). The outer coupling device (12) comprises a tube section (14) with which the unbroken part (11) of the wall of the package (1) can be broken and that can be introduced into the hole (15) in the outer part (10) of the inner coupling device (9) in order to be coupled to this such that the contents (3) in the package (1) can be withdrawn through the tube section (14). At least one protruding part (16) is arranged on the outer coupling device (12). At least one space (17) is arranged in the outer part (10) of the inner coupling device (9).
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: October 11, 2011
    Assignee: Asept International AB
    Inventor: Sten Drennow
  • Publication number: 20100213210
    Abstract: A device for feeding out liquid or substantially liquid contents from a storage container (2) comprises an outfeed container (3) for the storage container and a discharge means (6) for outfeed of the contents from the storage container by squeezing it. The storage container (2) has an inner connecting element (7) for connection to an outer connecting element (8) by the latter's penetration of the container wall at the inner connecting element. The storage container (2) is connected via the outer connecting element (8) to a valve means (9) with a valve body (10) which in a resting position abuts against a valve seat and which, for outfeed, is open able by the contents of the storage container being pressed against the valve body so that the latter leaves the valve seat. The valve body (10) has elastic properties and a normal shape when it abuts against the valve seat so that it closes the valve means (9). For outfeed, the valve body (10) assumes a stretched shape and leaves the valve seat.
    Type: Application
    Filed: December 18, 2007
    Publication date: August 26, 2010
    Applicant: ASEPT INTERNATIONAL AB
    Inventor: Sten Drennow
  • Patent number: 7743948
    Abstract: The present invention relates to a dispensing device for dispensing a liquid or viscous substance, preferably foodstuff. At least one pump means (4) is provided to perform pump motions for sucking said substance (2) into the dispensing device (1) and dispense or discharge it therefrom. The pump means (4) is provided to divide inner parts of the dispensing device (1) into at least one suction chamber (30) and at least one dispensing or discharge chamber (31) which are interconnected through at least one transfer chamber (32). The pump means (4) is during a first pump motion in one direction (A) provided to suck substance (2) into the suction chamber (30) and simultaneously dispense or discharge substance (2) from the discharge chamber (31). The pump means (4) is during a second pump motion in the opposite direction (D) relative to the first pump motion provided to feed substance (2) from the suction chamber (30) and through the transfer chamber (32) into the discharge chamber (31).
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: June 29, 2010
    Inventor: Sten Drennow
  • Patent number: 7584870
    Abstract: The present invention relates to a connecting device for connecting discharge devices to packages (3) with liquid products, preferably foodstuff products, for discharging the products from the packages (3). The connecting device includes two connecting members which can be connected to each other, namely a first connecting member (9) which has a hole (11), the hole being closed by means of a closing member (13), and a second connecting member having a tubular member by means of which the closing member (13) can be penetrated for opening the first connecting member (9). The tubular member can be inserted into the hole (11) and pressed onto edge portions (16) of the hole (11) in the first connecting member (9). The hole (11) has four, five or six corners (15) and edge portions (16) which extend between the corners and the tubular member is designed to fit with the hole (11).
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: September 8, 2009
    Assignee: ASEPT International AB
    Inventor: Sten Drennow
  • Patent number: 7552844
    Abstract: A coupling arrangement (5) includes an inner coupling device (9) within a package (1) and an outer coupling device (12) on a withdrawal arrangement (4). The outer coupling device (12) includes a tube section (14) that can break a wall of a package (1) and be introduced into a hole (15) in a part (10) of the inner coupling device (9). At least one protruding part (16) is arranged on and/or beside the tube section (14) of the outer coupling device (12). At least one hole (17) and/or a thin section (18) of wall is arranged in the part (10) of the inner coupling device (9). The protruding part (16) can be introduced into the hole (17) and/or break the thin section (18) of wall in order to allow coupling of the outer coupling device (12) and the inner coupling device (9). The protruding part (16) may prevent coupling of the inner coupling device (9) and the outer coupling device (12) if the part (10) provided with holes lacks the hole (17) and the thin section (18).
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: June 30, 2009
    Inventor: Sten Drennow
  • Publication number: 20090071976
    Abstract: The present invention concerns a coupling arrangement for coupling a withdrawal arrangement (4) to a package (1) with liquid or essentially liquid contents (3), which withdrawal arrangement (4) is intended for the removal of the contents (3) from the package (1). The coupling arrangement (5) comprises not only an inner coupling device (9) that is arranged within the package (1) but also an outer coupling device (12) that is arranged on the withdrawal arrangement (4). The outer coupling device (12) comprises a tube section (14) with which the unbroken part (11) of the wall of the package (1) can be broken and that can be introduced into the hole (15) in the outer part (10) of the inner coupling device (9) in order to be coupled to this such that the contents (3) in the package (1) can be withdrawn through the tube section (14). At least one protruding part (16) is arranged on the outer coupling device (12). At least one space (17) is arranged in the outer part (10) of the inner coupling device (9).
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventor: Sten Drennow
  • Patent number: 7395947
    Abstract: The present invention relates to a spacer at connecting devices which are adapted to connect discharge devices (2) to packages (3) with liquid products (4), preferably foodstuff products, for discharging the products (4) from the packages (3). The spacer (19) is provided on a connecting means (26) and is adapted to be located in the package (3) in order to, during emptying of the package, keep wall portions thereof at a distance from a connecting device (1) such that the wall portions do not prevent or substantially obstruct emptying of the package (3). The spacer (19) has resilient properties and can be pressed into a space (28) in a tube member (23) and spring back to a normal shape (NF).
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: July 8, 2008
    Assignee: Asept International AB
    Inventor: Sten Drennow
  • Publication number: 20070158364
    Abstract: The present invention relates to a dispensing device for dispensing a liquid or viscous substance, preferably foodstuff. At least one pump means (4) is provided to perform pump motions for sucking said substance (2) into the dispensing device (1) and dispense or discharge it therefrom. The pump means (4) is provided to divide inner parts of the dispensing device (1) into at least one suction chamber (30) and at least one dispensing or discharge chamber (31) which are interconnected through at least one transfer chamber (32). The pump means (4) is during a first pump motion in one direction (A) provided to suck substance (2) into the suction chamber (30) and simultaneously dispense or discharge substance (2) from the discharge chamber (31). The pump means (4) is during a second pump motion in the opposite direction (D) relative to the first pump motion provided to feed substance (2) from the suction chamber (30) and through the transfer chamber (32) into the discharge chamber (31).
    Type: Application
    Filed: December 20, 2004
    Publication date: July 12, 2007
    Inventor: Sten Drennow
  • Publication number: 20060201965
    Abstract: A coupling arrangement (5) includes an inner coupling device (9) within a package (1) and an outer coupling device (12) on a withdrawal arrangement (4). The outer coupling device (12) includes a tube section (14) that can break a wall of a package (1) and be introduced into a hole (15) in a part (10) of the inner coupling device (9). At least one protruding part (16) is arranged on and/or beside the tube section (14) of the outer coupling device (12). At least one hole (17) and/or a thin section (18) of wall is arranged in the part (10) of the inner coupling device (9). The protruding part (16) can be introduced into the hole (17) and/or break the thin section (18) of wall, in order to allow coupling of the outer coupling device (12) and the inner coupling device (9). The protruding part (16) may prevent coupling of the inner coupling device (9) and the outer coupling device (12) if the part (10) provided with holes lacks the hole (17) and the thin section (18).
    Type: Application
    Filed: January 12, 2006
    Publication date: September 14, 2006
    Inventor: Sten Drennow
  • Patent number: D605894
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: December 15, 2009
    Assignee: Asept International AB
    Inventor: Sten Drennow