Aqueously-swelling water stopper and a process for stopping water thereby
Patent 4558875 Issued on December 17, 1985. Estimated Expiration Date: 
December 12, 2004. 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.
December 12, 2004. 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. 06/680607 filed on 12/12/1984US Classes:277/312, PROCESS OF STATIC SEALING277/652, Distinct sheath or covering277/934, SEAL SWELLS WHEN WET52/169.14With waterproofing means; e.g., covering, coating, or laminaExaminersPrimary: Smith, Robert I.Attorney, Agent or FirmInternational ClassesC09K 3/10 (20060101)E04B 1/68 (20060101) Foreign Application Priority Data1980-04-05 JPAbstractThe disclosed water stopper and water stopping process use an aqueously-swelling water-stopping composition consisting of 10 to 40 weight % of rubber whose main ingredient is polyisobutylene, 10 to 20 weight % of silicate, 10 to 60 weight % of bentonite, said silicate and bentonite acting as fillers, and 10 to 40 weight % of plasticizer. The aforesaid water-stopping composition may be extruded into an elongated water stopper with or without a core therein, which water stopper can be inserted in a joint gap or other gap of structural members to stop water at the gap.Other References
| |
