Line marking apparatus, system and method
First Claim
1. A line marking apparatus for marking a new straight line without using a guide string, for use in a system that includes a separate source of electromagnetic radiation remote from the apparatus, the apparatus comprising:
- a body provided with wheels for movement in the direction of a straight line that is to be marked;
a line marking head comprising a dispensing nozzle that is constructed to dispense line marking material so as to mark the straight line that is to be marked;
a lateral adjustment device operatively supporting the line marking head on the body for effecting relative lateral movement therebetween; and
control equipment operative to control the lateral adjustment device, the control equipment comprising a detector for detecting electromagnetic radiation from the said remote source, for generating a feedback signal for position control of the lateral adjustment device, whereby lateral movement of the line marking head, relative to the body, is controlled by the control equipment such that, when the apparatus is moved along or parallel to a direction of the new straight line to be marked, the dispensing nozzle moves along the new straight line that is to be marked irrespective of whether movement of the body deviates from the direction of the said new straight line.
1 Assignment
0 Petitions
Accused Products
Abstract
A line marking apparatus, for use in a system that includes a source of a narrow beam of radiation which extends substantially horizontally along or parallel to a line to be marked, includes a wheeled chassis and a line marking head for dispensing line marking material. The marking head is supported on the chassis for lateral movement relative thereto, which movement is controlled by a controller that includes a detector which is movable with the marking head and is positioned and directed to detect such a beam of radiation, the marking head being movable together with the detector in response to a detected beam. Lateral movement of the marking head is thereby controlled such that the head and the detector substantially follow the line to be marked irrespective of whether the chassis deviates from the line direction.
10 Citations
22 Claims
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1. A line marking apparatus for marking a new straight line without using a guide string, for use in a system that includes a separate source of electromagnetic radiation remote from the apparatus, the apparatus comprising:
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a body provided with wheels for movement in the direction of a straight line that is to be marked; a line marking head comprising a dispensing nozzle that is constructed to dispense line marking material so as to mark the straight line that is to be marked; a lateral adjustment device operatively supporting the line marking head on the body for effecting relative lateral movement therebetween; and control equipment operative to control the lateral adjustment device, the control equipment comprising a detector for detecting electromagnetic radiation from the said remote source, for generating a feedback signal for position control of the lateral adjustment device, whereby lateral movement of the line marking head, relative to the body, is controlled by the control equipment such that, when the apparatus is moved along or parallel to a direction of the new straight line to be marked, the dispensing nozzle moves along the new straight line that is to be marked irrespective of whether movement of the body deviates from the direction of the said new straight line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A line marking system, the line marking system comprising a line marking apparatus for marking a new straight line without using a guide string, and a separate source of electromagnetic radiation, remote from the line marking apparatus, the line marking apparatus comprising:
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a body provided with wheels for movement in the direction of a straight line that is to be marked; a line marking head comprising a dispensing nozzle that is constructed to dispense line marking material so as to mark the straight line that is to be marked; a lateral adjustment device operatively supporting the line marking head on the body for effecting relative lateral movement there between; control equipment operative to control the lateral adjustment device, the control equipment comprising a detector for detecting electromagnetic radiation from the said remote source, for generating a feedback signal for position control of the lateral adjustment device, whereby lateral movement of the line marking head, relative to the body, is controlled by the control equipment such that, when the apparatus is moved along or parallel to a direction of the new straight line to be marked, the dispensing nozzle moves along the new straight line that is to be marked irrespective of whether movement of the body deviates from the direction of the new straight line. - View Dependent Claims (20)
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21. A method of marking a new straight line without using a guide string, using a system comprising a line marking apparatus and a separate source of electromagnetic radiation, remote from the line marking apparatus, the method comprising:
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providing the line marking apparatus, said apparatus comprising; a body provided with wheels for movement in the direction of the new straight line that is to be marked; a line marking head comprising a dispensing nozzle that is constructed to dispense line marking material so as to mark the line that is to be marked; a lateral adjustment device operatively supporting the line marking head on the body for effecting relative lateral movement therebetween; and control equipment operative to control the lateral adjustment device, the control equipment comprising a detector for detecting electromagnetic radiation from the said remote source, for generating a feedback signal for position control of the lateral adjustment device, whereby lateral movement of the line marking head, relative to the body, is controlled by the control equipment; and moving the line marking apparatus along or parallel to the new straight line to be marked, so as to mark the new line, whereby lateral movement of the line marking head relative to the body is controlled by the control equipment such that the dispensing nozzle moves along the new straight line that is to be marked, irrespective of whether the body deviates from the direction of the new straight line. - View Dependent Claims (22)
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Specification