초록 ▼

A flexible resin and fiber composite street sign blank adapted for attachment to a rigid bracket and signpost. The sign blank comprises a planer web section whose material composition and fiber arrangement provide a tensile strength of at least 25,000 psi and preserve flexibility to enable the sign

A flexible resin and fiber composite street sign blank adapted for attachment to a rigid bracket and signpost. The sign blank comprises a planer web section whose material composition and fiber arrangement provide a tensile strength of at least 25,000 psi and preserve flexibility to enable the sign blank to withstand impacts and other destructive influence. The web section is bounded along one or both of its long sides with an elongate rail section which has at least twice the thickness of the web thickness. The rail section has a material composition and fiber arrangement which provide a minimum tensile strength of at least 40,000 psi and develop an improved compliance match for attachment at the rigid bracket and signpost.

대표청구항 ▼

A flexible resin and fiber composite street sign blank adapted for attachment to a rigid bracket and sign post combination comprising: a planar web section having a horizontal side greater in length than a vertical side thereof, said web having a thickness between 0.045 and 0.250 inches and a web fi

A flexible resin and fiber composite street sign blank adapted for attachment to a rigid bracket and sign post combination comprising: a planar web section having a horizontal side greater in length than a vertical side thereof, said web having a thickness between 0.045 and 0.250 inches and a web fiber content including (i) longitudinal fiber and (ii) fiber material having a transverse fiber component, said web fiber content with resin providing a minimum balanced anisotropic strength parameter in the longitudinal direction of approximately 25,000 psi in said web section and a minimum balanced anisotropic strength parameter in the vertical direction of 5,000 psi; and an elongate rail section extending along and being integral with said horizontal side of the web section, said rail section having a thickness of at least twice the web thickness and between 0.125 and 0.750 inches and a rail fiber content including (i) fiber material having a transverse fiber component and (ii) longitudinal fibers, said rail fiber content with resin providing a minimum balanced anisotropic strength parameter in the longitudinal direction of 40,000 psi in said rail section and a minimum balanced anisotropic strength parameter in the vertical direction of 5,000 psi, said fiber material with transverse component being continuous between the web and rail sections and along a junction therebetween.