Repair kit for plastic pipe
Patent 4013309 Issued on March 22, 1977. Estimated Expiration Date: 
March 22, 1994. 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.
March 22, 1994. 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 2735699 3254650 3466066 3768841 3781041 3857588 InventorApplicationNo. 05/632406 filed on 11/17/1975US Classes:285/31, Inserted section285/133.21, Having a seal, gasket, O-ring, or packing285/332, Tapered285/423, Nonmetallic285/915MASTICExaminersPrimary: Callaghan, Thomas F.AbstractA repair or coupling kit for repairing previously installed plastic pipe without need for disturbing the installed condition of the pipe. The kit includes a minimum of two and a maximum of three tubular parts designed for telescopic assembly to the adjacent ends of the broken pipe. One of the parts is a coupling sleeve spanning the break and with its end portions adhesively bondable to the exterior of the parts bridged. All bonded surfaces preferably have an interference telescopic fit when assembled. | |
