Patents by Inventor Charles L. Krumreich

Charles L. Krumreich 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: 4597623
    Abstract: A connector assembly comprises an electrically nonconductive post (300) having a plurality of channels (310) in its upper surface for receiving individual insulated conductors. The upper surface of the post also includes slots (320) extending orthogonal to the channels (310). The slots (320) receive legs (220) of an inverted U-shaped contact (200), the legs comprising slotted beams (222) that depend from a base (210) of the contact. The contact base (210) is captured on a screw terminal (100) which threads onto the upper surface of the post (300). The screwing in of the screw terminal (100) causes the slotted beams (222) of the contact (200) to penetrate the insulation of the conductors placed in the channels (310) to electrically interconnect the conductors, contact (200), and screw terminal (100).
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: July 1, 1986
    Assignee: AT&T Bell Laboratories
    Inventor: Charles L. Krumreich
  • Patent number: 4451948
    Abstract: A tool for stripping insulation from coaxial or multiple conductor cables is disclosed. The tool consists of a support assembly (1) with an integrally connected spring (5) which swivels between an up and down position. The support assembly (1) contains a channel (2) which runs along its length where the spring (5) rests in its down position. A semicircular slot (4) receives the insulated cable. Embedded within support assembly (1) is a knife blade (7), a portion of which is exposed in the slot (4). The knife blade penetrates the insulation when the spring (5) is in its down position causing an incision through the insulation. A ring is placed at one end of the tool in which the user can insert a finger and thereby twirl the tool around to effect relative rotation of the tool and cable to cut through the cable over its entire circumference.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: June 5, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Robert R. Goodrich, Charles L. Krumreich, Robert J. O'Connor
  • Patent number: 4224485
    Abstract: A jack in accordance with the present invention includes a plurality of contact springs that are arranged in a row side by side one another and extend rearwardly cantilever fashion within a plug-receiving cavity. It further includes a switch disposed on each side of the connector contacts. Each switch comprises a movable contact spring that is normally in engagement with a stationary contact spring. The movable contact springs extend within the plug-receiving cavity while the stationary contact springs are remote to the opening.The jack is intended to be connected to a telephone line by respectively wiring the switches in series with the ring and tip conductors and wiring an individual connector contact in parallel with each of the switch contacts. Continuity in the telephone line is then provided by the closed switches of the jack when no plug is inserted into the jack.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: September 23, 1980
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Charles L. Krumreich
  • Patent number: T961003
    Abstract: a female connector or jack in accordance with the present invention includes a plurality of contact springs that are arranged in a row side by side one another and extend rearwardly cantilever fashion within a plug-receiving opening. It further includes a switch disposed on each side of the connector contacts. Each switch comprises a movable contact spring that is normally in engagement with a stationary contact spring. The movable contact springs extend within the plug-receiving opening while the stationary contact springs are remote to the opening.The jack is intended to be connected to a telephone line by respectively wiring the switches in series with the ring and tip conductors and wiring an individual connector contact in parallel with each of the switch contacts. Continuity in the telephone line is then provided by the closed switches of the jack when no plug is inserted into the jack.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: August 2, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Charles L. Krumreich
  • Patent number: D283979
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: May 27, 1986
    Assignee: AT&T Information Systems
    Inventors: Jaime R. Arnett, Charles L. Krumreich, Edgar E. Whetsel