Patents by Inventor Edgar B. Chiswell

Edgar B. Chiswell 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).

  • Retractable writing instrument having replaceable cartridge
    Patent number: 5601376
    Abstract: A writing instrument is provided which includes a body having a barrel portion and a plunger portion. The barrel portion has opposed front and rear ends for housing a replaceable writing cartridge and a spring for biasing the cartridge toward the rear end of the barrel portion. The plunger portion is removably maintained in the rear end of the barrel portion and is configured for moving the cartridge between a retracted portion and a protracted position and for rotational and axial movement with respect to the center line of the barrel portion for removing the plunger portion to replace the cartridge. A clip member is pivotably mounted to the body of the writing instrument and includes a latch for selectively engaging the body of the writing instrument when the cartridge is in a protracted position.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: February 11, 1997
    Assignee: BIC Corporation
    Inventors: Iskandar Badr, Edgar B. Chiswell
  • Retracting writing instrument having replaceable cartridge
    Patent number: 5454655
    Abstract: A writing instrument which includes a body having a barrel portion and a replaceable cartridge housed within the barrel portion. A retractor mechanism is removably maintained in a rear end of the barrel portion and is adapted for axial movement between a retracted position and a protracted position. The instrument further includes structure for biasing the replaceable cartridge toward the rear end of the barrel portion and for maintaining the retractor mechanism in the protracted position by imparting a moment, or force, on the retractor mechanism acting relative to the axial centerline of the barrel portion.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 3, 1995
    Assignee: BIC Corporation
    Inventor: Edgar B. Chiswell
  • Writing instrument barrel and method of forming a writing instrument
    Patent number: 5399041
    Abstract: An writing instrument having an elongated tubular body formed from a thin sheet of material being rolled upon itself. A marking substance positioned within a bore of the body is prevented from leaking through the body by the application of a coating to at least one side of the sheet so that a lining is formed in the bore.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: March 21, 1995
    Assignee: BIC Corporation
    Inventor: Edgar B. Chiswell
  • Retractable writing instrument having replaceable cartridge
    Patent number: 5336006
    Abstract: A writing instrument is provided which includes a body having a barrel portion and a plunger portion. The barrel portion has opposed front and rear ends for housing a replaceable writing cartridge and a spring for biasing the cartridge toward the rear end of the barrel portion. The plunger portion is removably maintained in the rear end of the barrel portion and is configured for moving the cartridge between a retracted portion and a protracted position and for rotational and axial movement with respect to the center line of the barrel portion for removing the plunger portion to replace the cartridge. A clip member is pivotably mounted to the body of the writing instrument and includes a latch for selectively engaging the body of the writing instrument when the cartridge is in a protracted position.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: August 9, 1994
    Assignee: Bic Corporation
    Inventors: Iskandar Badr, Edgar B. Chiswell