Shouldered ramp for streetwork cover and method of use
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[0039] Turning now to the drawings, the invention will be described in a preferred embodiment by reference to the numerals of the drawing figures wherein like numbers indicate like parts.
[0040] FIG. 1 is a side elevation of ramp strip 10 with plate 100 lowered in direction of arrow d down onto shoulder (or bed) 11 of strip 10.
[0041] FIG. 2 is a partial plan view of ramp strip 10 (without plate 100), illustrating preferred layout of shoulder 11 and ramp 12. Optional anchor apertures 13 and optional traction features such as grooves 14 and holes or dimples 15 are shown.
[0042] FIGS. 3 and 4 illustrate an preferred embodiment of ramp strip 10 where ramp 12 has preferred traction features in the form of raised buttons 16 and a depending spring lip 20 depending toward shoulder 11 at angle .alpha.. Ramp strip 10 is moved into engagement with plate 100 in the direction of arrow b. In effecting the engagement, lip 20 is generally displaced and forced upwardly from its resting or unsprung pos...
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