Concrete form tie assembly
Patent 4726560 Issued on February 23, 1988. Estimated Expiration Date: 
September 2, 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.
September 2, 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 References 3181832 3437309 3822860 3927857 Self-sealing tie assembly for erecting concrete forms Tie having integrally molded sleeve Patent #: 4159097 InventorApplicationNo. 06/902945 filed on 09/02/1986US Classes:249/43, Including sleeve surrounding spacer means engaging opposed faces of panels249/190, Including tie rod or means for positioning tie rod249/213, Including tie249/217, Shaping means removably mounted on tie249/46, Including wedge means engaging spacer means254/104, WEDGE254/29ATie rod tensionerExaminersPrimary: Woo, Jay H.Assistant: Housel, James C. Attorney, Agent or FirmInternational ClassesE04G 17/06 (20060101)E04G 17/07 (20060101) AbstractA concrete form tie assembly in which the tie rod is formed from a high tensile strength flexible wire member, with the sleeve being formed of a flexible or yieldable material. A short sleeve member is inserted into the spacer sleeve adjacent one end with washer members on opposite ends thereof for retaining on the tie rod member which is provided with spaced protrusions for coaction with the wash members, the tube and washer assembly serving to rigidify the assembly for assisting in insertion and removal of the tie rod and sleeve as a unit. The leading end of the tube and washer assembly may be provided with a conical end to act as a guide. The ends of the tie rod member are enlarged, such as by welding head members thereto, the head members being configured for coaction with conventional hairpin or snap tie wedge members.Other References
Field of SearchForming building structureIncluding panel spacing means extending between and through panels, e.g., tie rod Including sleeve surrounding spacer means engaging opposed faces of panels Panel having plural adjoining sections Including fastening means coacting with spacer means to secure sections together Including wedge means engaging spacer means Of resilient material capable of flexure to aid removal of core from product Including tie rod or means for positioning tie rod Including tie Having weakened area to facilitate breaking Having means to maintain panels spaced apart | |
