U.S. Patent Specifications

In a fastener for securing a plurality of supporting members together one of which employs a rotary pin provided with radial arms; a fastener element for co‐operation with said pin comprising a keeper on another of said supporting members and formed with an axial bore to receive the end of said pin and radial elongations connected to said bore to admit the passage of the radial arms, the opposite marginal edges of said bore and elongations within said keeper being inclined upwardly in opposite directions providing cam surfaces for engagement by said radial arms and a spring‐tensioned actuator associated , with said cams, means normally latching said actuator thereto under spring tension, and means for unlocking said actuator from said cam upon insertion of the pin axially in said keeper.