Laminated bearings having elastomer layers of varying dimensions
Patent 4349184 Issued on September 14, 1982. Estimated Expiration Date: 
September 14, 1999. 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.
September 14, 1999. 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 ReferencesInventorsAssigneeApplicationNo. 05/892478 filed on 04/03/1978US Classes:267/153, RUBBER248/634, Nonmetallic resilient element267/140.4, Metallic and nonmetallic267/141.1, Plural resilient elements with rigid spacer267/141.7, Arcuate or tapered contact surface267/282, Plural concentric elastomeric rings285/223, FLEXIBLE JOINT, RIGID MEMBERS384/125, Resilient bearing surface403/228, Composite bushing with elastomeric component416/134AAircraft rotorsExaminersPrimary: Butler, Douglas C.Attorney, Agent or FirmInternational ClassF16F 1/38 (20060101)AbstractA bearing for carrying compressive radial loads comprising alternating bonded layers of a resilient material of a uniform modulus of elasticity and layers of a non-extensible material, all generally concentrically formed about a common center axis. The fatigue life of the bearing under torsional and compressive loads is enhanced by progressively decreasing both the length and thickness of each layer of resilient material with increasing radii, so that a substantially equal strain is carried across each layer of resilient material in response to each torsional load and the shape factor of each of the layers of resilient material remains substantially constant or increases with increasing radii. | |
