Composite blind rivet assembly
December 6, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2324142 3129630 3643544 Blind fastener Blind bolt fastener for low bearing strength materials Blind rivet assembly Blind fastener assembly Composite buckling blind fastener Impulse resistant blind fastener Blind fastener with expandable sleeve forming a blind bulbed head with large bearing area and a pin having a controlled protrusion length Patent #: 4950115 InventorsAssigneeApplicationNo. 622435 filed on 12/06/1990US Classes:411/43, Frangible mandrel411/54, Expansible element moved relative to stationary expander411/55Expander threadedly engaged by moverExaminersPrimary: Lindsey, Rodney M.Attorney, Agent or FirmForeign Patent References
International ClassF16B 013/04AbstractA blind rivet assembly comprising a body made with an insertion head at one end and having a setting concave face at the other end, and an axial thread hole in which a screw is located, the screw having a head at one end and a break-away stem at the other end. A deformable, cylindrical socket, or sleeve, with a two-step axial hole is installed on the screw between its head and the setting concave face of the body, the step with the larger inside diameter being located at the side of the body. In order to prevent damage to the composite materials which are being joined and the tearing-off of the screw by limiting assembly loads, the axial hole of the cylindrical sleeve has an additional step with the smallest inside diameter located at the side of the screw head, a predetermined ratio of the thickness of the walls of the additional step and the second step adjacent being provided, the thickness of the wall and the length of the second step also having a predetermined range.Field of SearchBulged by axially contracting endsBulged portion including bend line or reduced section Expander threadedly engaged by mover Expander having integral pull stem Frangible mandrel Including sleeve and distinct tapered expander (e.g., anchor bolt type) Expansible element moved relative to stationary expander | |
