Patents by Inventor Daniel B. Granzow

Daniel B. Granzow 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: 5955022
    Abstract: A page-wide, drop-on-demand type ink jet printhead and an associated method of manufacturing an orifice plate. The orifice plate is comprised of a block of material in which a first portion of the block of material has been removed to define an ink reservoir. Also formed in the orifice plate are a series of apertures, each of the apertures includes an ink jet and an ink jet nozzle. A fill channel, which extends between the ink reservoir and each ink jet, is also formed in the orifice plate to provide a supply of ink to the ink jet. An intermediate layer is mounted to the orifice plate. The intermediate layer is formed of an active piezoelectric material and a series of piezoelectric actuators, each acoustically coupled to a corresponding one of the series of apertures, are formed on the intermediate layer.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: September 21, 1999
    Assignee: Compaq Computer Corp.
    Inventors: Kelsey R. Walker, Daniel B. Granzow
  • Patent number: 5751318
    Abstract: A sidewall actuated channel array for a high density ink jet printhead includes a top wall, bottom wall and a plurality of liquid confining channels formed between columns of polarized piezoelectric material. The array is formed from a plurality of sheets of polarized piezoelectric material which are joined together. Several embodiments are provided for distributing the joints between sheets of piezoelectric material to reduce the magnitude of the electric field needed to polarize the piezoelectric material.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: May 12, 1998
    Assignee: Compag Computer Corporation
    Inventor: Daniel B. Granzow
  • Patent number: 5677719
    Abstract: An ink jet printer has multiple print heads for ejecting ink in response to signals supplied in sequence to cause ejection of ink in forming an image. The ink is ejected upon an ink transfer medium, and an energy source is adapted for application of heat to the surface of the ink transfer medium. A pressure application assembly places the printing substrate in contact with the ink transfer medium in forming an image by transfer of ink. Ejection of ink may occur from multiple ink jet print heads simultaneously.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: October 14, 1997
    Assignee: Compaq Computer Corporation
    Inventor: Daniel B. Granzow
  • Patent number: 5438739
    Abstract: A sidewall actuated channel array for a high density ink jet printhead includes a top wall, bottom wall and a plurality of liquid confining channels formed between columns of polarized piezoelectric material. The array is formed from a plurality of sheets of polarized piezoelectric material which are joined together. Several embodiments are provided for distributing the joints between sheets of piezoelectric material to reduce the magnitude of the electric field needed to polarize the piezoelectric material.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: August 8, 1995
    Assignee: Compaq Computer Corporation
    Inventor: Daniel B. Granzow
  • Patent number: 5365645
    Abstract: A page wide ink jet printhead body is formed using first and second series of identically configured rectangular piezoceramic blocks having widths not greater than about one inch. The individual blocks are poled in widthwise directions and secured to one another and to an upper side surface of a nonpoled piezoceramic lower body section. Horizontally equally spaced saw cuts are then made downwardly through the first and second block series, with the block width being an even multiple of the horizontal saw cut pitch, and saw cuts extending vertically through the aligned side junctures of each block series. A top, nonpoled piezoceramic body section is then secured to the top side of the second block series, the saw cuts forming within the resulting printhead body a spaced series of parallel ink receiving channels interdigitated with a spaced series of piezoelectrically deflectable sidewall actuator sections.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: November 22, 1994
    Assignee: Compaq Computer Corporation
    Inventors: Kelsey R. Walker, Carol C. Scalf, Daniel B. Granzow
  • Patent number: 4882496
    Abstract: Apparatus for disconnecting, sterilizing and making new tubing connection. The apparatus includes electromechanical means for sensing the presence of a clamp to prevent fluid leaks during operation. The apparatus also includes means for forcing compliance with a predetermined sequence of operations. All electronic components are contained in the top of the apparatus to isolate same from any potential fluid leads which will naturally flow over and into the base of the apparatus.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: November 21, 1989
    Assignee: Baxter International Inc.
    Inventors: Marc Bellotti, Arthur Lueders, Daniel B. Granzow, Larry C. Taylor, Mark Nauman
  • Patent number: 4560472
    Abstract: An automatic cycler for performing Continuous Cycling Peritoneal Dialysis (CCPD) and Intermittent Peritoneal Dialysis (IPD) is provided. The apparatus of the present invention is a safe and convenient cycler apparatus for performing peritoneal dialysis in either home or clinical environment. The apparatus provides a stable base by storing dialysate at a relatively low position. Tubing administration set length is reduced to a minimum by the use of individual, separated valves and by the elimination of redundant, duplicate tube sections. Administration set complexity is reduced by the use of a conventional design dialysate container for heating and weighing of an infusing dialysate dosage. The apparatus allows for gravity feed to a patient with an optional capability of adjusting the pressure head for the gravity feed.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: December 24, 1985
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel B. Granzow, Arthur L. Lueders, Ralph L. Davis, Stanley J. Pernic, James R. Hitchcock, Jr., Francis D. Buckley
  • Patent number: 4500788
    Abstract: Apparatus for automatically connecting and disconnecting a pair of connectors includes first and second relatively movable means to carry the connectors and to move them back and forth between connected and disconnected positions. Rack and gear means may be used having a variable mechanical advantage at different positions to facilitate connection and disconnection of the connectors. The apparatus may also have means for providing radiation for antibacterial effect on the connectors, typically ultraviolet radiation.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: February 19, 1985
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Ralph Kulin, Daniel B. Granzow, Brant R. Danielsen
  • Patent number: 4340097
    Abstract: An improved connector member is provided for providing sealed and preferably sterile connection between a pair of conduits which each terminate in a hollow, transparent housing where some of the wall portion of each housing comprises an opaque wall portion sealed to the remainder of the housing. The opaque wall portions of each housing are positioned in facing contact with each other and are held in sealed, retentive relationship so that exposure to radiant energy causes them to fuse and open an aperture therethrough. In accordance with this invention, improved retention means are provided to permit the respective housings to be moved together in a path which is generally parallel to the opaque walls into sliding retaining relation. Also, the conduit communicating with the housings may be internally sealed, being openable from the exterior.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: July 20, 1982
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David W. Ammann, Daniel B. Granzow
  • Patent number: 4294247
    Abstract: In a flexible tube, for example tubing for connecting blood bags, valve means are provided which comprises a tubular portion having a closed end, and an elongated, generally rigid member carried on the exterior of the closed end and positioned within the flexible tube. Frangible means are provided to permit the opening of the closed end by manual manipulation of the elongated member from outside of the flexible tube. The elongated, rigid member is adapted to fit in sealing relationship within the tubular portion after the opening of the closed end, to permit resealing of the valve.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: October 13, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Garry L. Carter, Daniel B. Granzow, Edward L. Bayham
  • Patent number: 4265280
    Abstract: An improved connector member is provided for providing sealed and preferably sterile connection between a pair of conduits which each terminate in a hollow, transparent housing where some of the wall portion of each housing comprises an opaque wall portion sealed to the remainder of the housing. The opaque wall portions of each housing are positioned in facing contact with each other and are held in sealed, retentive relationship so that exposure to radiant energy causes them to fuse and open an aperture therethrough. In accordance with this invention, improved retention means are provided to permit the respective housings to be moved together in a path which is generally parallel to the opaque walls into sliding retaining relation. Also, the conduit communicating with the housings may be internally sealed, being openable from the exterior.
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: May 5, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David W. Ammann, Daniel B. Granzow
  • Patent number: 4167663
    Abstract: An apparatus for warming blood and other parental fluids as they are infused through a disposable flow system includes a pair of heating elements which heat the blood as it passes through a warming bag provided in the flow system. The heating elements are recurringly switched on and off with a duty cycle dependent on both the temperature of the blood at the output of the warming bag, and the temperature differential between the output and input of the bag to maintain the blood at a predetermined temperature independent of flow rate. A duty cycle alarm circuit senses current supplied to the heating elements and trips the main circuit breaker of the apparatus to terminate operation in the event current is continuously applied over a predetermined interval of time, and temperature range and door alarm circuits sound an alarm if the output temperature of the blood falls outside of a predetermined range or if the operator attempts to remove the warming bag from the apparatus while the apparatus is in operation.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: September 11, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel B. Granzow, Jr., Robert J. Froehlich
  • Patent number: 4157723
    Abstract: A connection may be formed between sealed conduits in which each conduit carries an opaque, thermoplastic wall portion preferably having a melting range above essentially 200.degree. C., preferably with the opaque thermoplastic wall portions being carried on the conduit about their periphery by transparent wall portions of the conduit. The opaque wall portions of the conduits are brought together into facing contact, and then exposed to sufficient radiant energy to cause the opaque wall portions to fuse together, and to open an aperture through the fused wall portions. This provides sealed communication between the interiors of the conduits.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: June 12, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel B. Granzow, Garry L. Carter, David W. Ammann
  • Patent number: 4098455
    Abstract: A rotary distributor seal for a rotary centrifuge which comprises a tubular housing having sealed ends, a relatively rotatable fluid conveying apertured spindle coaxially mounted in the housing, and several resilient, spaced ring seals positioned about the spindle to seal the annular space between the spindle and the housing, and to subdivide it into several annular chambers. Ports communicate with the chambers to provide fluid flow from the ports through the separate chambers and through the spindle. In accordance with this invention, support members are positioned in alternate, spaced chambers between pairs of ring seals to prevent collapse of the ring seal pairs together.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: July 4, 1978
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David W. Ammann, David A. Bates, Daniel B. Granzow
  • Patent number: 4098123
    Abstract: An apparatus for warming blood and other parental fluids as they are infused through a disposable flow system includes a pair of heating plates which heat the blood as it passes through a warming bag provided in the flow system. One of the heating plates comprises the inside surface of a door pivotally mounted to the apparatus housing, and the other heating plate comprises the underlying surface of the housing so as to form in conjunction with the first plate a user accessable heating chamber for receiving the warming bag. A wedge-shaped temperature-conductive thermometer block having a temperature insulating layer along one surface thereof fits between the heating plates and receives a thermometer to enable the temperature of each heating plate to be independently measured.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: July 4, 1978
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Daniel B. Granzow, Jr.
  • Patent number: 4056116
    Abstract: A sealed fluid conduit, closed with a diaphragm, contains a spike having forward and rear ends and adapted for moving to rupture the diaphragm with the forward end. A transversely-enlarged, flexible, axially collapsible portion of the conduit is positioned adjacent to the spike and adapted to permit manual movement of the spike from outside of the conduit to rupture the diaphragm. In accordance with this invention, a longitudinal groove is defined in the spike extending from the front end and terminating at a point between the front and rear ends. The spike defines an annular, enlarged sealing portion of a transverse dimension which is proportioned to sealingly occlude the portion of the conduit immediately forward of the transversely enlarged collapsible portion, the sealing portion being positioned between the terminating point of the groove and the rear end of the spike. The spike is positioned so that the enlarged sealing portion normally resides within the transversely-enlarged collapsible portion.
    Type: Grant
    Filed: September 8, 1976
    Date of Patent: November 1, 1977
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Garry L. Carter, Daniel B. Granzow
  • Patent number: D250045
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: October 24, 1978
    Inventors: Daniel B. Granzow, Jr., Robert J. Froehlich
  • Patent number: RE32056
    Abstract: A connection may be formed between sealed conduits in which each conduit carries an opaque, thermoplastic wall portion preferably having a melting range above essentially 200.degree. C., preferably with the opaque thermoplastic wall portions being carried on the conduit about their periphery by transparent wall portions of the conduit. The opaque wall portions of the conduits are brought together into facing contact, and then exposed to sufficient .Iadd.electromagnetic .Iaddend.radiant energy to cause the opaque wall portions to fuse together, and to open an aperture through the fused wall portions. This provides sealed communication between the interiors of the conduits.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: December 24, 1985
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel B. Granzow, Garry L. Carter, David W. Ammann