Patents by Inventor David S. Darling

David S. Darling 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: 4184286
    Abstract: A damage-free actuating mechanism for an action toy of the type in which an object is reciprocally moved between retracted and extended positions in response to the rotation of a pair of wheels. The actuating mechanism comprises a crankshaft secured to a pair of wheels, and a pivotal lever coupling the crank of the crankshaft to the object. Accordingly, normal rotation of the wheels and crankshaft imparts reciprocal movement to the object between retracted and extended positions. A fulcrum of the actuating mechanism is provided in engagement with one portion of the lever, and a resilient member biases the one portion of the lever into engagement with the fulcrum during normal rotation of the wheels and crankshaft. The resilient member further allows the one portion of the lever to move away from the fulcrum in those situations in which the object is manually pushed from its extended position to its retracted position while the wheels and crankshaft are stationary.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: January 22, 1980
    Assignee: The Quaker Oats Company
    Inventors: Duane Spengler, David S. Darling