发明名称 Railroad track design template(2)
摘要 My railroad design templates depict a turnout of a given size by its exact frog angle so that the centerline of the diverging side of the turnout can be accurately drawn from the turnout point of intersection (TOPI). This methodology of using a template to depict a turnout of a given size by its exact frog angle has never been done before and should assist railroad track designers during the design of preliminary track layouts on a drawing. My railroad design templates also combine all the various degree of curves, various size turnouts, various scales and protractor all on one template. This unique combination of various track design elements on a template has never been accomplished before and should be a convenience to railroad track designers. My railroad design templates also allow the track designer to indicate the point of switch (PS) and last-long tie (LLT) locations on their drawings. I believe the depiction of the point of switch and last-long-tie locations of a turnout on a drawing via a template has never been done before and should be a convenience to railroad track designers.
申请公布号 US2004187334(A1) 申请公布日期 2004.09.30
申请号 US20030395760 申请日期 2003.03.25
申请人 REDDEN JOHN W. P. 发明人 REDDEN JOHN W. P.
分类号 B43L7/00;(IPC1-7):B43L7/00 主分类号 B43L7/00
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