Tubular beam joint
Patent 4322176 Issued on March 30, 1982. Estimated Expiration Date: 
May 14, 2000. 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 14, 2000. 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 2658776 2964147 2976968 3270478 3309121 3323820 3443348 3485005 3914063 3918233 InventorAssigneeApplicationNo. 06/149756 filed on 05/14/1980US Classes:403/219, Mutually contacting403/170, Three or more radiating members403/176, Polyhedral52/650.1, Beam (e.g., girder, joist, etc.)52/655.1, Having specific connector, etc.52/81.3Frame connection detailExaminersPrimary: Shedd, Wayne L.Attorney, Agent or FirmInternational ClassE04B 1/19 (20060101)AbstractA joint for connecting tubular beams comprising two caps receiving deformed end portions of the beams therebetween. Each cap has a tapering tubular portion in contact with the end portions, each end portion having first and second outwardly diverging opposed faces and third and fourth inwardly converging opposed faces. The outer perimeter of the end portion is greater than the perimeter of an opening defined on the top and bottom by the two caps and on the sides by adjacent beams, so each end portion is highly resistant to forces tending to pull it from between the caps and must be mechanically deformed before it will be pulled through the opening. | |
