Fountain pen

• US 3,168,889 A
• Filed: 03/06/1961
• Issued: 02/09/1965
• Est. Priority Date: 03/06/1961
• Status: Expired due to Term

• Current Assignee: George A. Rubissow
• Original Assignee: George A. Rubissow
• Inventors: Rubissow, George A.
• Application Number:
  US04/107,875
• Time in Patent Office: 1,436 Days
• US Class Current: 401/152
• CPC Class Codes: B43K 5/04 flexible

Claims

15. A FOUNTAIN PEN HAVING A CASING AND AN EASILY BENDABLE SUBSTANTIALLY SELF-COLLAPSIBLE THIN WALL INK-RECEIVER PLACED INSIDE OF SAID CASING SUBSTANTIALLY ADJACENT TO ITS INNER SURFACE AND HAVING A PEN-HOLDING MEMBER SECURED WITHIN AN END THEREOF, SAID MEMBER HAVING INK-CHANNELS THERETHROUHG, SAID INK-RECEIVER HAVING AN OPEN END HERMETICALLY SEALED TO SAID MEMBER AND COMMUNICATING WITH SAID CHANNELS, SAID INK-RECEIVER BEING SUBDIVIDED LONGITUDINALLY INTO TWO SUBSTANTIALLY HALF PARTS, A FIRST NON-MOVABLE PART AND A SECOND MOVABLE PART, SAID FIRST NON-MOVABLE PART BEING PROVIDED WITH ATTACHING REINFORCING MEANS WHICH HOLD IT UNMOVABLY IN RESPECT TO THE ADJACENT PART OF THE INNER SURFACE OF SAID CASING, SAID SECOND MOVABLE PART BEING PROVIDED WITH MAGNETICALLY ATTRACTABLE MEANS ATTACHED TO IT BUT NOT ATTACHED TO SAID INNER SURFACE OF SAID CASING, WHEREBY WHEN A MAGNET IS PLACED OUTSIDE OF SAID CASING SUBSTANTIALLY ALONG SAID SECOND MOVABLE PART, SAID SECOND MOVABLE PART WILL BE MOVED TO-AND-FRO BY THE FORCE OF SAID MAGNET THUS EXERCIZING RESPECTIVELY AN ACTION OF PUMPING OR OF EVACUATING THE INK INTO OR FROM SAID INK-RECEIVER.