U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Segmented pultrusions comprising continuous lengths of fiber having selected areas along the lengths containing resin matrix impregnations

Patent 4347287 Issued on August 31, 1982. Estimated Expiration Date: Icon_subject August 14, 2000. 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

2871911

2878548

2918104

3103098

3235429

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Inventors

Assignee

Application

No. 06/178226 filed on 08/14/1980

US Classes:

428/378, Coating on discrete and individual rods, strands or filaments264/136, Impregnation of batt, sheet, or filament267/149, Glass fiber425/102, To work contact means upstream of shaping means425/95, By means attached to or within male shaping member428/394, Synthetic resin or polymer428/395, Polyamide, polyimide or polyester428/399, Longitudinally varying428/542.2, DECORATIVE ARTICLE428/542.6Constructed from filamentary or flat sheet material

Examiners

Primary: Cannon, James C.

Attorney, Agent or Firm

International Classes

B29C 70/04 (20060101)
B29C 70/52 (20060101)

Abstract

A system and method for forming a segmented pultruded shape is provided in which a continuous length of fiber reinforcements are impregnated with a matrix material and then formed into a continuous series of alternating rigid segments and flexible segments by curing the matrix material impregnating the rigid sections and removing the matrix material impregnating the flexible sections.

Other References

  • "Pultrusion"; Leonard S. Meyer P.E.; 25th Annual Technical Conference, 1970, Reinforced Plastics/Composites Division
  • "Process and Economic Factors for Pultrusion"; J. Albert Rolston, Polym-Plast. Technol. Eng., 13(i); 65-82, (1979)
  • The Society of the Plastics Industry, Inc
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