Gimbal conduit joint
Patent 4480857 Issued on November 6, 1984. Estimated Expiration Date: 
May 20, 2002. 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.
May 20, 2002. 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 2904365 2936185 3112129 3770303 3915482 InventorAssigneeApplicationNo. 06/380225 filed on 05/20/1982US Classes:285/45, WITH CASING, LINING OR PROTECTOR285/226, Bellows285/265With gimbal ringExaminersPrimary: Callaghan, Thomas F.Attorney, Agent or FirmInternational ClassF16L 27/02 (20060101)AbstractThe invention pertains to a double gimbal joint construction for rigid conduit or duct systems. The joint includes a gimbal assembly consisting of a pair of sheet metal concentrically related rings maintained in radial spaced relationship by annular spacers located at 90° circumferential intervals about the rings wherein pivot pins extend through the spacers. Annular conduit receiving collars are pivotally attached to the gimbal ring assembly by fork lugs pivotally connected to the spacer and pivot pin assemblies intermediate the inner and outer rings. The construction permits a "double" shear relationship to be established at the fork lugs and pivot pins improving anti-shear characteristics, and the sheet metal construction reduces costs. | |
