Patents by Inventor David A. Winchell

David A. Winchell 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: 4320789
    Abstract: A molded collapsible solution container which defines a body portion having an integral neck portion and a relatively stiff shoulder portion and sealed at the opposite end, with gusset portions defined in the body portion adjacent the shoulder portion at opposite sides thereof. The shoulder portion extends outwardly from the neck portion and also extends axially rearwardly away from the neck portion in tapered manner. Sections of the shoulder portion adjacent the gusset portions normally extend in a plane perpendicular to the longitudinal axis of the container, being connected to the remainder of the shoulder portion by an angular crease line and being flexible to permit axially forward bending of the sections about the crease line as the container collapses by draining. Also, the tail seal at the opposite end may define a convex, arcuate seal for improved strength.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: March 23, 1982
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Jerry D. Martin, Gary A. Ward, David A. Winchell
  • Patent number: 4308904
    Abstract: A molded collapsible solution container defines a chamber-defining body portion wall having an integral neck portion and a shoulder portion at one end thereof. The container defines a pair of opposed gusset portions adjacent the shoulder portion at opposite ends of the shoulder portion, with the shoulder portion defining opposed shoulder edges extending between the gusset portions. A pair of opposed lines of flexing weakness are defined in the collapsible solution container and exhibit an arcuate cross section which extends inwardly of the container. The opposed lines of flexing weakness are positioned on each side of the container in generally parallel relation to the opposed shoulder edges with the opposed lines of flexing weakness being longitudinally spaced from the shoulder edges by a distance which is proportioned to cause the opposed lines of flexing weakness to abut one another as the container collapses inwardly about the opposed shoulder edges.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: January 5, 1982
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Jerry D. Martin, Stephen J. Pearson, Gary A. Ward, David A. Winchell
  • Patent number: 4282980
    Abstract: A plastic hanger for medical containers or the like is described which, in its normal, unstressed position, lies adjacent the bottom of the container so as not to interfere with setting the container on a flat surface. The hanger is molded separately from the container and sealed or attached to a rib formed on the bottom of the container.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: August 11, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: David A. Winchell
  • Patent number: 4236646
    Abstract: A hermetically sealed container is provided in which a cup-shaped overcap overlies an externally threaded dispensing outlet and is hermetically bonded to the bottle neck. An outer jacket ring is provided to jack the overcap off of the bottle neck when the jacking ring is rotated downwardly. The overcap carries a wiper seal which engages the dispensing outlet to prevent liquid flow out of the dispensing outlet until the overcap is removed. The container closure is tamper-proof in that the overcap cannot be threadedly engaged with the externally threaded dispensing outlet once the overcap has been jacked off the bottle neck.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: December 2, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Rudolf V. Ganz, Jr., David A. Winchell
  • Patent number: 4234103
    Abstract: A diagnostic reagent dispensing bottle which includes a flexible container having an elongated cap mounting neck which is closed by a pierceable or punctureable membrane. A membrane-piercing-and-droplet-dispensing spike is also provided. The spike includes a conically-shaped orifice and a sharp membrane piercing point. The spike is carried by an elongated cap which has a body portion for mounting on the neck of the container. The neck and cap cooperate to position the spike in either (1) a shipping or non-piercing position or (2) a dispensing position wherein the spike pierces the membrane so that the reagent within the container can flow through the spike for dispensing. The cap also includes a cover or closure for closing the bottle which is hingedly connected to the cap body so that the cover is selectively positionable in either an open or closed position. Both detent and thread systems are disclosed for cooperation with the cap and neck to position and guide the spike relative to the pierceable membrane.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: November 18, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Frederick P. Strobl, Jr., David A. Winchell, William A. DeVroom
  • Patent number: 4232721
    Abstract: A molded collapsible solution container which container defines a chamber-defining body portion wall having an integral neck portion and shoulder portion at one end thereof. The container defines, in its normal, unstressed state, a transverse cross section which tapers from the shoulder portion progressively along a major portion of its length to a flat, sealed end portion at the end of the container opposite to the one end. In accordance with this invention, the shoulder portion is rectilinear in shape, with the wall circumferences of transverse cross sections preferably progressively decreasing in length along the container from adjacent the shoulder portion toward the opposite end. Opposed triangular gusset portions are preferably present in which the side of the gusset portion which is parallel to the shoulder edge is positioned directly against the shoulder edge, and the shoulder edge defines the shape of an enlarged, generally cylindrical section for ease of flexing.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: November 11, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Jerry D. Martin, Stephen J. Pearson, Gary A. Ward, David A. Winchell
  • Patent number: 4227954
    Abstract: A cap closure is provided for bonding to the neck of a container. The cap closure includes a base portion enclosed by a side wall, a peripheral rim extending outwardly from the side wall with the rim being adapted for bonding to the neck of the container, an administration port connected to the base portion, a medication addition port connected to the base portion, a resealable injection site connected to the medication addition port, and port protectors covering and hermetically sealing the administration and medication addition ports. In the illustrative embodiment, the base portion, side wall, peripheral rim, administration port and medication addition ports are molded as an integral, unitary member, and a method is provided for fusing a membrane to the medication addition port and for fusing port protectors with the base member.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: October 14, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Gary A. Ward, David A. Winchell
  • Patent number: 4191231
    Abstract: The method of molding flexible, collapsible containers comprises extruding a tubular parison of material to be molded and sealing the outer, free end of the parison; ballooning the parison with relatively low pneumatic pressure; closing the mold about the ballooned parison to cause the edges of the parison to protrude out of the mold chamber; and sealing said parison to form said container, including the step of forming seal lines positioned laterally inwardly from the lateral edges of the parison. A novel container design is also covered.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: March 4, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David A. Winchell, Jerry D. Martin, Frank L. Roe
  • Patent number: 4181232
    Abstract: A container for storing and dispensing sterile liquids is provided with a hermetically sealed primary cap and overcap. The overcap and primary cap are provided, respectively, with an interlocking ring and undercut lip to provide for limited relative axial movement; the overcap and bottle neck are provided with interfitting lugs and ribs to provide for limited rotational movement. An outer ring has internal threads engaging external threads on the overcap and defines a jacking member whereby rotation of the outer ring moves the overcap upwardly to break the hermetic seals.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: January 1, 1980
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David Bellamy, David A. Winchell
  • Patent number: 4177905
    Abstract: A closure system is provided for a threaded container. A threaded closure cap has an annular skirt which engages a resilient gasket that is stretched over the bottle neck. The resilient gasket overlies a cap support flange which extends from the neck. Downward axial movement of the cap with respect to the container provides a vertical compressive force against the resilient gasket by the cap skirt. A heat shrinkable outer member surrounds the closure cap and provides a tamperproof seal with respect to the container.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: December 11, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David A. Winchell, Thomas A. Fowles
  • Patent number: 4176755
    Abstract: A resealable container is provided for storing and dispensing liquids. The container is formed in a one-piece molded construction and includes a cap covering an outlet defined by an externally threaded neck, with a frangible section coupling the cap to the neck. An outer ring is threadedly interfitted over the cap in engagement with the neck, with the outer ring having a plurality of inwardly extending slightly flexible fingers which fit around the cap to captivate the cap. The cap is forced downwardly during downward rotation of the outer ring thereby severing the cap from the neck at the frangible section.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: December 4, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: David A. Winchell
  • Patent number: 4174238
    Abstract: A thermoplastic pharmaceutical solution container includes a neck portion having at least one port through the neck portion. A thermoplastic port protector or closure covers the port and defines a frangible section. The closure has a length to diameter ratio providing good mechanical advantage leverage to rupture the frangible section when the closure is pushed sideways. A seal is formed with the closure by forcing a die heated above the melting point of the plastic material into the neck portion, removing a portion of the port protector and forming a depression. The frangible section is formed in the vertical side wall of the depression.
    Type: Grant
    Filed: January 25, 1978
    Date of Patent: November 13, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Thomas A. Fowles, David A. Winchell
  • Patent number: 4171236
    Abstract: A method is provided for forming a fracturable seal of the type wherein a plastic cup-shaped closure is hermetically sealed to a plastic planar surface, such as the neck of pharmaceutical solution containers. The seal is formed with the closure by forcing a die heated above the melting point of the plastic material into the planar surface, with the sealing die also being in heat exchange relationship with a portion of the closure. Both the planar surface and the closure adjacent thereto become molten and the surface material is displaced to form a fused seal transverse to the surface. The surface is depressed at least 0.005 inch from its original height by the sealing action of the die, and a frangible section is formed in the vertical side wall of the depression. The seal will be fractured due to tension stress when the closure is removed from the surface.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: October 16, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David A. Winchell, Thomas A. Fowles
  • Patent number: 4160473
    Abstract: A plastic container such as a collapsible blood bag or a parenteral solution container may include a flexible sheet member integrally attached to a plastic container and defining lines of tearing weakness for defining and unfolding an elongated sheet member portion, which, in turn, defines a second line of tearing weakness for forming a retaining aperture for receiving a sample tube and the like. Also, the container may have a retention member positioned at each end of the plastic container comprising open, transverse channel means proportioned to receive a length of flexible tubing wound about the ends of said container.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: July 10, 1979
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: David A. Winchell
  • Patent number: D258346
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: February 24, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David A. Winchell, William M. Evans
  • Patent number: D258720
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: March 31, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: William M. Evans, David A. Winchell
  • Patent number: D261106
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: October 6, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: David A. Winchell, William M. Evans
  • Patent number: D261985
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: November 24, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Thomas A. Fowles, David A. Winchell
  • Patent number: D263504
    Type: Grant
    Filed: July 6, 1979
    Date of Patent: March 23, 1982
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Thomas A. Fowles, David A. Winchell
  • Patent number: RE31082
    Abstract: A thermoplastic pharmaceutical solution container includes a neck portion having at least one port through the neck portion. A thermoplastic port protector or closure covers the port and defines a frangible section. The closure has a length to diameter ratio providing good mechanical advantage leverage to rupture the frangible section when the closure is pushed sideways.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: November 16, 1982
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: David A. Winchell