Road marking machine and method

• US 4,236,950 A
• Filed: 10/26/1977
• Issued: 12/02/1980
• Est. Priority Date: 10/27/1976
• Status: Expired due to Term

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Ludwig Eigenmann
• Inventors: Eigenmann, Ludwig
• Primary Examiner(s): Goolkasian, John T.
• Assistant Examiner(s): Dawson, Robert A.
• Application Number:
  US05/845,834
• Time in Patent Office: 1,133 Days
• Field of Search: 40/612, 118/305, 118/308, 156/71, 156/280, 156/281, 156/523, 156/524, 156/526, 156/574, 156/575, 156/577, 239/150, 180/1 AP, 404/12, 404/14, 404/72, 404/73, 404/93, 404/94, 427/136, 427/137
• US Class Current: 156/71
• CPC Class Codes: E01C 23/185 Tape- or sheet-shape markers or carriers
• CPC Class Codes: E01C 23/222 specially adapted for automatic spraying of interrupted, individual or variable markings
• CPC Class Codes: E01F 9/576 Traffic lines
• CPC Class Codes: Y10T 156/1348 Work traversing type
• CPC Class Codes: Y10T 156/1352 with liquid applying means
• CPC Class Codes: Y10T 156/1788 Work traversing type and/or means applying work to wall or static structure
• CPC Class Codes: Y10T 156/179 with liquid applying means
• CPC Class Codes: Y10T 156/1795 Implement carried web supply

Abstract

A compound machine for mechanically forming traffic dividing and regulating lines on a roadway pavement, comprising a motor driven vehicle adapted to travel along a desired direction on said pavement, the machine being implemented by a first apparatus supplied and adapted for forming spaced line segment by applying on said pavement spaced lengths of a multilayer road marking prefabricated tape material, and by a second apparatus supplied and adapted for forming painted marking line lengths aligned with and in the intervals between the spaced road marking tape segments, whereby a discontinuous marking line including alternatively arranged tape segments and painted segments is formed on the roadway pavement.

Claims

1. A road marking machine, particularly for forming a traffic regulating line, comprising a chassis movable along a road to be marked;

first applying means on said chassis operative for applying a plurality of first separate strips onto a road to be marked, so that when said chassis moves along the road the first strips applied onto the road follow one after another, said first applying means being adapted to so apply said first separate strips to the road that each two adjacent first strips applied to the road are spaced one from each other along the movement of the chassis so as to constitute therebetween an elongated gap on the road; and

second applying means on said chassis adapted for applying at least one second strip different from said first strips in said gap between said two adjacent first strips so that said second strip is aligned with said first strip along the direction of the movement of the chassis and at least partially covers said gap on the road to thereby constitute together with said first strips a traffic regulating line, said second means being adapted to spray a predetermined substance of said second strip onto the road and into the gap between said first strips.

2. A road marking machine, particularly for forming a traffic regulating line, comprising a chassis movable along a road to be marked;

first applying means on said chassis operative for applying a plurality of first separate strips of prefabricated tape material onto a road to be marked, so that when said chassis moves along the road the first strips are applied onto the road follow one another, said first applying means being adapted to so apply said first separate strips to the road that each two adjacent first strips applied to the road are spaced one from the other along the movement of the chassis so as to constitute therebetween an elongated gap on the road; and

second applying means on said chassis adapted for applying paint so as to form at least one second strip in said gap between said two adjacent first strips to be aligned with said first strips along the direction of the movement of the chassis and to at least partially cover said gap on the road, to thereby constitute together with said first strips a traffic regulating line composed of the alternating strips of prefabricated tape material and paint.

3. A machine as defined in claim 2, wherein said second applying means are adapted to so apply said paint into said gap on the road that at least a portion of said gap remains uncovered by said one second strip.

4. A machine as defined in claim 2, wherein said second applying means are adapted to apply said paint so that said one second strip has two end portions and at least one end portion thereof is closely adjacent to the corresponding end portion of one of the two adjacent first strips bounding said gap.

5. A machine as defined in claim 2, wherein said first applying means are adapted for applying said first strips consisting of prefabricated multilayer tape of the kind including a lower layer made of a primer layer forming composition adapted to be intimately connected to the road, and for heating said lower layer immediately prior to contact of the same with the road.

6. A machine as defined in claim 5, wherein said first applying means further comprise heating means operative for applying heat to said lower layer of the multilayer tape.

7. A machine as defined in claim 2, wherein said first applying means are adapted to apply a plurality of first strips each having a first predetermined length.

8. A machine as defined in claim 7, wherein said first applying means are adapted to apply a sequence of separate first strips so that said each two adjacent strips are spaced from each other to thereby form a plurality of recurrent sets of two adjacent strips, each of said sets having a second predetermined length.

9. A machine as defined in claim 8, wherein said first predetermined length does not exceed one fifth of said second predetermined length.

10. A machine as defined in claim 9, wherein each of said second strips has a third predetermined length substantially smaller than that of said gap so that the traffic regulating line constituted by said first and second strips appears from a distance to be an uninterrupted line.

11. A method of marking a road, particularly with a traffic regulating line, comprising the steps of applying to a road to be marked a first sequence of first strips following one after another, so that each two adjacent first strips are in alignment with and spaced from each other by an elongated gap;

and applying directly to the road a second sequence of second strips different from said first strips and following one after another, so that at least one second strip is applied to the road into said elongated gap between said two adjacent first strips to be aligned with said first strips along the direction which the machine takes along the road and to at least partially cover said gap and to thereby constitute together with said first strips a traffic regulating line, said step of applying said second strip constituting the step of spraying a substance of the second strip onto the road in the gap between said two adjacent first strips.

12. A method as defined in claim 11, and further comprising step of allowing said substance to solidify onto the road so as to form said second strip in the gap between said two adjacent first strips.

13. A method of marking a road, particularly with a traffic regulating line, comprising the steps of applying to a road to be marked a first sequence of first strips constituted of prefabricated tape material and following one after another, so that each two adjacent first strips are in alignment with and spaced from each other by an elongated gap;

and applying directly to the road a paint so as to form a second sequence of second strips also following one after another, so that at least one second strip is applied to the road into said elongated gap between said two adjacent first strips to be aligned with said first strips along the direction which the machine takes along the road and to at least partially cover said gap, to thereby constitute together with said first strips a traffic regulating line composed of the alternating strips of prefabricated tape material and paint.

14. A method as defined in claim 13, wherein said paint forming said one second strip is so applied in the gap between said two adjacent first strips as to only partly cover said gap to thereby leave at least a portion of said gap uncovered by said second strip.