Patents by Inventor Daniel F. Cafferty

Daniel F. Cafferty 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: 5613716
    Abstract: An electronic vehicle door unlatch control reduces unwanted noise and actuator stress by varying unlatch actuator activation duration to provide the minimum duration required for door opening. A reversible actuator moves a detent between a fork bolt releasing position and a fork bolt retaining position; and an unlatch switch is activated by the fork bolt to signal whether the door is open or closed. A door opening signal activates the actuator to move the detent to the fork bolt releasing position and deactivate the actuator when the unlatch switch indicates the door is open or at the end of a first predetermined time period, whichever occurs first. The actuator is then activated in reverse to return the detent essentially to the fork bolt retaining position when the unlatch switch indicates the door is open, when the door opening signal is no longer received, or at the end of a second predetermined time period longer than the first predetermined time period, whichever occurs first.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: March 25, 1997
    Assignee: General Motors Corporation
    Inventor: Daniel F. Cafferty