Patents by Inventor Karl Schreijag

Karl Schreijag 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: 7341574
    Abstract: A veterinary syringe comprises a base body for receiving a syringe barrel with a guiding element for a plunger rod that is guided therein so as to be movable in a longitudinal direction. At one end of the plunger rod, a plunger is attached that extends into the syringe barrel. The syringe further comprises a handle and an operating lever. The operating lever is connected to a guiding element that engages with a toothed rack associated with the plunger rod, and with a locking device for the plunger rod that engages with the toothed rack. The locking device acts as a locking slider disposed inside the guiding element and has an opening through which the plunger rod is guided and extends into the toothed rack from below, locking the toothed rack so as to prevent it from withdrawing.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 11, 2008
    Assignee: Henke-Sass, Wolf GmbH
    Inventor: Karl Schreijag
  • Publication number: 20060020244
    Abstract: A veterinary syringe comprises a base body for receiving a syringe barrel with a guiding element for a plunger rod that is guided therein so as to be movable in a longitudinal direction. At one end of the plunger rod, a plunger is attached that extends into the syringe barrel. The syringe further comprises a handle and an operating lever. The operating lever is connected to a guiding element that engages with a toothed rack associated with the plunger rod, and with a locking device for the plunger rod that engages with the toothed rack. The locking device acts as a locking slider disposed inside the guiding element and has an opening through which the plunger rod is guided and extends into the toothed rack from below, locking the toothed rack so as to prevent it from withdrawing.
    Type: Application
    Filed: March 10, 2003
    Publication date: January 26, 2006
    Inventor: Karl Schreijag
  • Patent number: 6989000
    Abstract: A syringe for connection to a fluid container containing fluid to be discharged comprises a syringe barrel with a plunger moving therein, and a discharge outlet, through which fluid contained in the fluid container is dischargeable by actuation of the plunger, said syringe barrel being connected with the fluid container port and the discharge outlet via a fluid channel system, and a valve mechanism being provided in the fluid channel system, allowing the syringe barrel to be filled with fluid from the fluid container and to then discharge said fluid through the discharge outlet, wherein the valve mechanism comprises a valve member which is movable between first and second positions, said valve member, in said first position, allowing fluid flow from the fluid container to the syringe barrel and simultaneously blocking fluid flow from or to the discharge outlet and, in said second position, allowing fluid flow from the syringe barrel to the discharge outlet while simultaneously blocking fluid flow from or to t
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: January 24, 2006
    Assignee: Henke-Sass, Wolf GmbH
    Inventors: Karl Schreijag, Ralf Kiehn
  • Publication number: 20050020983
    Abstract: A syringe for connection to a fluid container containing fluid to be discharged comprises a syringe barrel with a plunger moving therein, and a discharge outlet, through which fluid contained in the fluid container is dischargeable by actuation of the plunger, said syringe barrel being connected with the fluid container port and the discharge outlet via a fluid channel system, and a valve mechanism being provided in the fluid channel system, allowing the syringe barrel to be filled with fluid from the fluid container and to then discharge said fluid through the discharge outlet, wherein the valve mechanism comprises a valve member which is movable between first and second positions, said valve member, in said first position, allowing fluid flow from the fluid container to the syringe barrel and simultaneously blocking fluid flow from or to the discharge outlet and, in said second position, allowing fluid flow from the syringe barrel to the discharge outlet while simultaneously blocking fluid flow from or to t
    Type: Application
    Filed: June 9, 2004
    Publication date: January 27, 2005
    Inventors: Karl Schreijag, Ralf Kiehn
  • Publication number: 20030135163
    Abstract: A veterinary syringe comprising a Luer lock cannula attachment provided at the injection-side end of a syringe barrel, wherein said attachment is provided as a hollow cylinder in its front region facing the cannula to be inserted, said hollow cylinder having its longitudinal axis aligned with the longitudinal axis of the syringe barrel of the veterinary syringe, and said attachment having its interior wall provided with a thread for reception of an attachable end of a cannula, which is provided with a suitable companion thread, and wherein a hollow cone, having an external diameter smaller than the diameter of the interior space of the hollow cylinder and comprising the injection channel for the medicament and protruding into the attachable end of the inserted cannula is arranged in the interior space of the hollow cylinder. The hollow cylinder being rotatable about its longitudinal axis relative to said hollow cone.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 17, 2003
    Applicant: Henke-Sass Wolf GmbH
    Inventor: Karl Schreijag