Patents by Inventor David B. Wightman

David B. Wightman 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: 5481889
    Abstract: A latching apparatus includes a rack and pinion drive. A latch bar slide between a latched and unlatched position with ramped latching members mounted on the bar engaging complementary latching members. The latch connects to several types of latch actuators including a button actuator having rotation indicating means. The latch is also configured to connect to a keyed latch actuator and a push-button actuator.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: January 9, 1996
    Assignee: Federal-Hoffman, Inc.
    Inventors: John E. Richard, David B. Wightman, Clifford A. Klinger, Steven J. Hammond, Joseph D. Ricke
  • Patent number: 4917421
    Abstract: A readily detachable fastener for mounting upon an enclosure, the fastener having a base member with channeled edge portions designed to slidably engage the enclosure upon which it is mounted. A connector pin extends outwardly from the base member, and is designed to releasably lock into a pin receiving hole of the enclosure such that the detachable fastener may be attached or removed from the enclosure, as desired. A latch is pivotally connected to the base member, and carries a bail which catches on the cover of the enclosure when the latch is pivoted to an open position. The latch may then be pivoted to a closed position, thereby tightly securing the cover to the enclosure. The base member and latch are constructed with openings therethrough so as to accommodate locking the same together with a conventional lock.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: April 17, 1990
    Assignee: Federal-Hoffman, Inc.
    Inventors: David B. Wightman, Steven J. Hammond, Robert A. Knoss