Patents by Inventor Dietrich Bizer

Dietrich Bizer 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: 7766029
    Abstract: A re-closable valve (1, 100, 700, 800) for use in sterile fluid transfer has a body (5) with open entry and exit sides (2, 3) and a passageway (4) for fluid therebetween. The entry side is connectable to an opening of a separate vessel and the exit side is connectable to downstream processing. The entry side includes a first rupturable seal (5b, 500) blocking the opening of the entry side. A piston (9) is connected to an actuator (7) via a cam mechanism (8, 85, 10) which moves the piston (9) axially in the passageway (4) and to the first seal (5b, 500). On movement of the piston (9) during a first actuation, the first seal (5b, 500) is torn free from the entry side to open the valve for fluid transfer. A sharp rim (15) surrounds the opening of the entry side and a curved surface area (193) encircles the piston exterior proximal the entry side.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: August 3, 2010
    Assignee: GL Tool & Manufacturing Company, Inc.
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Patent number: 7753340
    Abstract: The invention provides a valve (1) for sterile transfer of fluids. The valve (1) comprises a housing (5) having first and second open ends (2, 3) and a passageway (4) extending between the ends (2, 3). The first end (2) has a flange (54) for coupling the housing (5) about an opening (205) of an external conduit (201) and a seal blocking an open area of the first end (2). The seal is placed in register with the opening (205) of the external conduit (201). The valve (1) has a piston (9) movably disposed within the housing (5) so as to interrupt the seal and to permit fluid to pass along the passageway (4). A mating surface (215) of the flange (54) and the seal form a sterilizable surface. The seal is formed between a plastic plug (18) movable by the piston (9) and a sharp plastics rim (15) which encompasses the open area of a first end (16) of the housing (5).
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: July 13, 2010
    Assignee: GL Tool and Manufacturing Co. Inc.
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Patent number: 7581976
    Abstract: The present invention relates to a bulkhead connector assembly providing a sealing arrangement for sealingly feeding a conduit between two environments. The assembly provides a first and second coupling components having a first and second surface respectively. A gap is formed between the first and second surfaces. The first coupling component has an aperture which extends between the first surface and a first environment and the second coupling component has an aperture which extends between the second surface and a second environment. Each aperture is adapted for receiving a conduit therethrough. A resiliently deformable gasket is provided to be placed into the gap and the gasket also is provided with a bore for a conduit to pass through the gasket.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: September 1, 2009
    Assignee: GL Tool & Manufacturing Company Inc.
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Publication number: 20090194168
    Abstract: A re-closable valve (1, 100, 700, 800) for use in sterile fluid transfer has a body (5) with open entry and exit sides (2, 3) and a passageway (4) for fluid therebetween. The entry side is connectable to an opening of a separate vessel and the exit side is connectable to downstream processing. The entry side includes a first rupturable seal (5b, 500) blocking the opening of the entry side. A piston (9) is connected to an actuator (7) via a cam mechanism (8, 85, 10) which moves the piston (9) axially in the passageway (4) and to the first seal (5b, 500). On movement of the piston (9) during a first actuation, the first seal (5b, 500) is torn free from the entry side to open the valve for fluid transfer. A sharp rim (15) surrounds the opening of the entry side and a curved surface area (193) encircles the piston exterior proximal the entry side.
    Type: Application
    Filed: February 1, 2005
    Publication date: August 6, 2009
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Publication number: 20080136170
    Abstract: The present invention relates to a bulkhead connector assembly providing a sealing arrangement for sealingly feeding a conduit between two environments. The assembly provides a first and second coupling components having a first and second surface respectively. A gap is formed between the first and second surfaces. The first coupling component has an aperture which extends between the first surface and a first environment and the second coupling component has an aperture which extends between the second surface and a second environment. Each aperture is adapted for receiving a conduit therethrough. A resiliently deformable gasket is provided to be placed into the gap and the gasket also is provided with a bore for a conduit to pass through the gasket.
    Type: Application
    Filed: June 2, 2005
    Publication date: June 12, 2008
    Applicant: GL TOOL & MANUFACTURING COMPANY INC.
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Patent number: 7350535
    Abstract: A valve apparatus (100) for use in sterile fluid transfer or isolator systems has open entry (10) and exit (11) sides and a passageway (9) for fluid between the entry (10) and the exit (11) sides. The entry side (10) is connectable to an opening (4c) of a vessel or pipe (4) and the exit side (11) is connectable to downstream processing by means such as tubing, a vessel or a pipe. The entry side (10) includes a rupturable seal (2a) blocking the open entry side (10). Valve (100) also includes an actuator (5) attached to a piston (1) which moves within the valve (100), the piston being connected to the seal so that on movement of the piston, the seal is torn free from the entry side thereby allowing fluid gain entry to the valve (100) and to pass along the passageway (9) between the open entry (10) and exit (11) sides to downstream processing.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: April 1, 2008
    Assignee: GL Tool and Manufacturing Co. Inc.
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Publication number: 20060243942
    Abstract: The invention provides a valve (1) for sterile transfer of fluids. The valve (1) comprises a housing (5) having first and second open ends (2, 3) and a passageway (4) extending between the ends (2, 3). The first end (2) has a flange (54) for coupling the housing (5) about an opening (205) of an external conduit (201) and a seal blocking an open area of the first end (2). The seal is placed in register with the opening (205) of the external conduit (201). The valve (1) has a piston (9) movably disposed within the housing (5) so as to interrupt the seal and to permit fluid to pass along the passageway (4). A mating surface (215) of the flange (54) and the seal form a sterilisable surface. The seal is formed between a plastic plug (18) movable by the piston (9) and a sharp plastics rim (15) which encompasses the open area of a first end (16) of the housing (5).
    Type: Application
    Filed: July 30, 2004
    Publication date: November 2, 2006
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Publication number: 20050150546
    Abstract: A valve apparatus (100) for use in sterile fluid transfer or isolator systems has open entry (10) and exit (11) sides and a passageway (9) for fluid between the entry (10) and the exit (11) sides. The entry side (10) is connectable to an opening (4c) of a vessel or pipe (4) and the exit side (11) is connectable to downstream processing by means such as tubing, a vessel or a pipe. The entry side (10) includes a rupturable seal (2a) blocking the open entry side (10). Valve (100) also includes an actuator (5) attached to a piston (1) which moves within the valve (100), the piston being connected to the seal so that on movement of the piston, the seal is torn free from the entry side thereby allowing fluid gain entry to the valve (100) and to pass along the passageway (9) between the open entry (10) and exit (11) sides to downstream processing.
    Type: Application
    Filed: April 25, 2003
    Publication date: July 14, 2005
    Inventors: Gerhard Liepold, Dietrich Bizer
  • Patent number: 5993929
    Abstract: A carbon fiber reinforced plastic laminate is scored in the vicinity of a desired breaking area. The laminate is made from multiple layers, each of which is scored. The scores of adjacent layers of the laminate structure are staggered so that each is offset laterally from the adjacent scores.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: November 30, 1999
    Assignee: Dornier GmbH
    Inventors: Dietrich Bizer, Wolfgang Pritzer