Patents by Inventor Martinus A. Oude Aarninkhof

Martinus A. Oude Aarninkhof 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).

  • Contact device for the transmission of electric current between a stationary contact part and a movable contact part
    Patent number: 4183598
    Abstract: In a contact device for the transmission of electric current between a stationary contact and a movable contact wherein the stationary contact has walls at least partially encircling the movable contact, resilient elements transmit the current and are positioned between the movable contact and the walls of the stationary contact. The resilient elements comprise roller contact springs made of a material having sufficient electrical conductivity, elasticity and mechanical strength and are wedged in between the movable contact such that upon movement thereof the contact springs revolve about their center. The springs have a diameter larger than is necessary to span the distance between the movable contact and the walls of the stationary contact, and the roller contact springs are reduced in diameter by twisting or torsioning.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: January 15, 1980
    Assignee: Hazemeijer B.V.
    Inventor: Martinus A. Oude Aarninkhof