Thermoplastic melting and dispensing apparatus
Patent 4474311 Issued on October 2, 1984. Estimated Expiration Date: 
October 2, 2001. 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.
October 2, 2001. 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 3531023 Apparatus for melting and dispensing thermoplastic material Apparatus for melting and applying a fusion adhesive Device for the melting and measured discharge of a thermoplastic adhesive material Patent #: 4352442 InventorAssigneeApplicationNo. 06/287490 filed on 07/31/1981US Classes:222/146.5, By electrical energy126/343.5RMELTING FURNACESExaminersPrimary: Rolla, Joseph J.Assistant: Noland, Kenneth Attorney, Agent or FirmInternational ClassesB29B 13/02 (20060101)B29B 13/00 (20060101) B05C 11/10 (20060101) AbstractAn apparatus for melting and dispensing thermoplastic material comprising a hopper, a grid melter, a reservoir and a pump. Solid thermoplastic material contained within the hopper is melted by the grid melter and flowed into a reservoir from which the pump supplies the molten material to a dispenser. The inside walls of the hopper are coated with "Teflon" which has been found to expedite remelting of molten material which has backed up into the hopper and solidified there. Additionally, the "Teflon" coating has been found to solve the problem of the seals between the reservoir, grid melter and hopper springing leaks upon the remelting of solid thermoplastic material contained in the hopper.Other References
| |
