Line marking apparatus
First Claim
1. A pavement line marking apparatus comprising support means arranged to travel along said pavement in a desired direction, said support means carrying line detection means to repeatedly transverse scan a predetermined width of said pavement substantially greater than a width of line previously formed on said pavement each time said line detection means moves over a predetermined individual length of said pavement in said desired direction, paint applicator means mounted from mounting means such that said paint applicator means are located rearwardly of said line detection means by a distance greater than a predetermined number of said individual lengths of said pavement, said mounting means being movable relative to said support means, means for moving said mounting means whereby the paint applicator means are selectably moved laterally relative to said line detection means, and control means interconnecting said line detection means and said means for moving the paint applicator mounting means, said line detection means being adapted to transversely scan the pavement traversed by said apparatus to sense said line previously formed on said pavement and to provide a signal in response thereto indicative of lateral edges of said line previously formed on said pavement, said signal controlling movement and positioning of said paint applicator means relative to the line detection means through said control means whereby paint from said paint applicator means is supplied to said pavement over said line previously formed on said pavement only if said line previously formed on the pavement has been detected by said line detection means to extend over a distance equal to or greater than said predetermined number of said individual lengths of said pavement.
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Accused Products
Abstract
Pavement line marking apparatus adapted to detect old line markings on a pavement surface and to repaint such markings or alternatively to paint new line markings to a desired pattern, the apparatus comprising a support beam (11) with a marking detection element (80) arranged at one end such that any old line markings are detectable thereby, upon movement of the detection element 80 over the desired pavement surface, paint applicator means (75, 76) arranged mounted from the support boom rearwardly from the marking detection element (80) for movement transversely of the direction of movement of the support boom (11) along the desired pavement surface, and control means actuable in response to a signal from the marking detection element to move said paint applicator means to a position over the old line markings and to operate the paint applicator means to deposit paint along the old line markings on the markings on the pavement surface.
52 Citations
16 Claims
- 1. A pavement line marking apparatus comprising support means arranged to travel along said pavement in a desired direction, said support means carrying line detection means to repeatedly transverse scan a predetermined width of said pavement substantially greater than a width of line previously formed on said pavement each time said line detection means moves over a predetermined individual length of said pavement in said desired direction, paint applicator means mounted from mounting means such that said paint applicator means are located rearwardly of said line detection means by a distance greater than a predetermined number of said individual lengths of said pavement, said mounting means being movable relative to said support means, means for moving said mounting means whereby the paint applicator means are selectably moved laterally relative to said line detection means, and control means interconnecting said line detection means and said means for moving the paint applicator mounting means, said line detection means being adapted to transversely scan the pavement traversed by said apparatus to sense said line previously formed on said pavement and to provide a signal in response thereto indicative of lateral edges of said line previously formed on said pavement, said signal controlling movement and positioning of said paint applicator means relative to the line detection means through said control means whereby paint from said paint applicator means is supplied to said pavement over said line previously formed on said pavement only if said line previously formed on the pavement has been detected by said line detection means to extend over a distance equal to or greater than said predetermined number of said individual lengths of said pavement.
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16. A pavement line marking apparatus comprising support means arranged to travel along said pavement in a desired direction, said support means carrying line detection means arranged to maintain surveillance by repeated transverse scanning relative to said desired direction of a predetermined width of said pavement greater than a width of line previously formed on said pavement, paint applicator means mounted from mounting means such that said paint applicator means are located rearwardly of said line detection means, said mounting means being movable relative to said support means, means for moving said mounting means whereby the paint applicator means are selectably moved laterally relative to said line detection means during paint application, and control means interconnecting said line detection means and said means for moving the paint applicator mounting means, said line detection means being adapted to transversely scan the pavement traversed by said apparatus to sense said line previously formed on said pavement and to provide a signal in response thereto indicative of lateral edges of said line previously formed on said pavement, said signal controlling movement and positioning of said paint applicator means relative to the line detection means during paint application through said control means whereby paint from said paint applicator means is supplied to said pavement over said line previously formed on said pavement.
Specification