Expansion joints
Patent 4732413 Issued on March 22, 1988. Estimated Expiration Date: 
August 18, 2006. 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.
August 18, 2006. 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 ReferencesBelt type expansion joints Expansion joints Patent #: 4403796 InventorsAssigneeApplicationNo. 06/897330 filed on 08/18/1986US Classes:285/49, Intermediate resilient conduit (noise-dampener)285/229, Single fold type285/236ClampedExaminersPrimary: Arola, Dave W.International ClassesF16L 27/108 (20060101)F16L 27/00 (20060101) F16L 51/02 (20060101) F16L 51/00 (20060101) AbstractThe proximate ends of spaced apart sections of duct systems for fluid media are interconnected by expansion joints having a sleeve of flexible material surrounding and isolating the flow path in the area between the sections. The flexible material consists of at least one reinforcing substrate to which surface layers of a media resisting material having a degree of elasticity are fused and bonded. Each substrate in one embodiment consists of two series of strands oriented to present a criss-cross pattern with the strands of both series diagonally disposed with with respect to the flow path when the material is formed into a sleeve. In another embodiment, there is an additional series of strands which are longitudinal. | |
