Vehicle position marking device

Claim 1

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: speedometer means adapted for attachment to said vehicle for generating an electrical signal proportional to the speed of said vehicle; a gun adapted to fire an electrically detonable cartridge containing a color marking substance, said gun being adapted for mounting in a vertical, downwardly directed position above said surface; and means electrically connected to said cartridge for detonating said cartridge when the generated electrical signal attains a value corresponding to the selected speed; whereby, upon detonation of the cartridge, the color marking substance is propelled downwardly against said surface to mark thereon the location that the vehicle attains the selected speed.

Claim 2

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: speedometer means adapted for attachment to said vehicle for generating an electrical signal proportional to the speed of said vehicle; a gun adapted to fire an electrically detonable cartridge containing a color marking substance, said gun being adapted for mounting in a vertical, downwardly directed position above said surface; and means electrically connected to said cartridge for detonating said cartridge when the generated electrical signal attains a value corresponding to the selected speed; whereby, upon detonation of the cartridge, the color marking substance is propelled downwardly against said surface to mark thereon the location that the vehicle attains the selected speed.

Claim 4

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: a frame adapted for detachable connection to said vehicle; a wheel rotatably mounted on said frame and adapted for rolling contact with said surface; speedometer means for generating an electrical signal proportional to the speed of revolution of said wheel; a gun adapted to fire an electrically detonable cartridge containing a color marking substance, said gun being mounted in a vertical, downwardly directed position on said frame; and means electrically connected to said cartridge for detonating said cartridge when the generated electrical signal attains a value corresponding to the selected speed.

Claim 5

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: a frame adapted for detachable connection to said vehicle; a wheel rotatably mounted on said frame and adapted for rolling contact with said surface; speedometer means for generating an electrical signal proportional to the speed of revolution of said wheel; a gun adapted to fire an electrically detonable cartridge containing a color marking substance, said gun being mounted in a vertical, downwardly directed position on said frame; and means electrically connected to said cartridge for detonating said cartridge when the generated electrical signal attains a value corresponding to the selected speed.

Claim 6

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: speedometer means adapted for attachment to said vehicle for generating a series of electrical pulses having a frequency proportional to the speed of said vehicle; conditioner means electrically connected to said speedometer means for modulating said electrical pulses so as to produce a series of modulated electrical pulses; pulse rate converter means electrically connected to said conditioner means for generating an analog DC potential having a voltage proportional to the frequency of said modulated electrical pulses; comparator means electrically connected to said pulse rate converter for generating an electrical output signal when said DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a gun adapted to fire an electrically detonable cartridge of color marking substance responsive to the electrical output signal from said comparator means; and means for mounting said gun in a vertical, downwardly directed position so that said color marking substance is propElled downwardly against said surface when said cartridge is detonated.

Claim 7

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: speedometer means adapted for attachment to said vehicle for generating a series of electrical pulses having a frequency proportional to the speed of said vehicle; conditioner means electrically connected to said speedometer means for modulating said electrical pulses so as to produce a series of modulated electrical pulses; pulse rate converter means electrically connected to said conditioner means for generating an analog DC potential having a voltage proportional to the frequency of said modulated electrical pulses; comparator means electrically connected to said pulse rate converter for generating an electrical output signal when said DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a gun adapted to fire an electrically detonable cartridge of color marking substance responsive to the electrical output signal from said comparator means; and means for mounting said gun in a vertical, downwardly directed position so that said color marking substance is propElled downwardly against said surface when said cartridge is detonated.

Claim 10

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: a wheel assembly adapted for attachment to said vehicle, said assembly comprising a frame, an axle connected to said frame, a wheel rotatably mounted on said axle and adapted for rolling contact with said surface, and an opaque disc mounted so as to rotate with said wheel, said disc having a plurality of light pervious areas of uniform size and shape evenly disposed around its periphery and substantially equidistant from the axis of said wheel; a light source mounted at one side of said disc adjacent to said light pervious area; a photoelectric cell mounted on the opposite side of said disc from said light source and aligned so that light from said light source passes through said light pervious area and impinges on said photoelectric cell thereby causing said photoelectric cell to generate an electrical impulse; conditioner means electrically connected to said photoelectric cell for receiving said electrical impulses and generating a modulated electrical impulse for each electrical impulse received from said photoelectric cell; pulse rate converter means electrically connected to said conditioner means for receiving said modulated impulses and generating an analog D.C. potential having a voltage proportional to the rate at which said modulated impulses are received; comparator means electrically connected to said pulse rate converter for receiving said analog DC potential and producing an electrical output signal when said analog DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a gun adapted for attachment to said frame for firing an electrically detonable cartridge containing a color marking substance downwardly against said surface; and detonating means electrically connected to said comparator means and to said cartridge for producing an electrical detonating signal responsive to said electrical output signal.

Claim 11

A device for marking on a surface the location where a vehicle traveling over the surface attains a selected speed, which comprises: a wheel assembly adapted for attachment to said vehicle, said assembly comprising a frame, an axle connected to said frame, a wheel rotatably mounted on said axle and adapted for rolling contact with said surface, and an opaque disc mounted so as to rotate with said wheel, said disc having a plurality of light pervious areas of uniform size and shape evenly disposed around its periphery and substantially equidistant from the axis of said wheel; a light source mounted at one side of said disc adjacent to said light pervious area; a photoelectric cell mounted on the opposite side of said disc from said light source and aligned so that light from said light source passes through said light pervious area and impinges on said photoelectric cell thereby causing said photoelectric cell to generate an electrical impulse; conditioner means electrically connected to said photoelectric cell for receiving said electrical impulses and generating a modulated electrical impulse for each electrical impulse received from said photoelectric cell; pulse rate converter means electrically connected to said conditioner means for receiving said modulated impulses and generating an analog D.C. potential having a voltage proportional to the rate at which said modulated impulses are received; comparator means electrically connected to said pulse rate converter for receiving said analog DC potential and producing an electrical output signal when said analog DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a gun adapted for attachment to said frame for firing an electrically detonable cartridge containing a color marking substance downwardly against said surface; and detonating means electrically connected to said comparator means and to said cartridge for producing an electrical detonating signal responsive to said electrical output signal.

Claim 14

A device for measuring the distance traversed by a vehicle traveling over a surface, which comprises: a wheel assembly adapted for attachment to said vehicle, said assembly comprising a frame, an axle connected to said frame, a wheel rotatably mounted in said axle and adapted for rolling contact with said surface, and an opaque disc mounted so as to rotate with said wheel, said disc having a plurality of light pervious areas of uniform size and shape evenly disposed around its periphery and substantially equidistant from the axis of said wheel; a light source mounted on said frame at one side of said disc adjacent to said light pervious area; a photoelectric cell mounted on said frame on the opposite side of said disc from said light source and aligned so that light from said light source passes through said light pervious areas and impinges on said photoelectric cell thereby causing said photoelectric cell to generate an electrical impulse; conditioner means electrically connected to said photoelectric cell for receiving said electricAl impulses and generating a modulated electrical impulse for each electrical impulse received from said photoelectrical cell; pulse rate converter means electrically connected to said conditioner means for receiving said modulated impulses and generating an analog DC potential having a voltage proportional to the rate at which said modulated impulses are received; comparator means electrically connected to said pulse rate converter for receiving said analog DC potential and producing an electrical output signal when said analog DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a pulse counter electrically connected to said conditioner means through a first switching means responsive to said electrical output signal.

Claim 15

A device for measuring the distance traversed by a vehicle traveling over a surface, which comprises: a wheel assembly adapted for attachment to said vehicle, said assembly comprising a frame, an axle connected to said frame, a wheel rotatably mounted in said axle and adapted for rolling contact with said surface, and an opaque disc mounted so as to rotate with said wheel, said disc having a plurality of light pervious areas of uniform size and shape evenly disposed around its periphery and substantially equidistant from the axis of said wheel; a light source mounted on said frame at one side of said disc adjacent to said light pervious area; a photoelectric cell mounted on said frame on the opposite side of said disc from said light source and aligned so that light from said light source passes through said light pervious areas and impinges on said photoelectric cell thereby causing said photoelectric cell to generate an electrical impulse; conditioner means electrically connected to said photoelectric cell for receiving said electricAl impulses and generating a modulated electrical impulse for each electrical impulse received from said photoelectrical cell; pulse rate converter means electrically connected to said conditioner means for receiving said modulated impulses and generating an analog DC potential having a voltage proportional to the rate at which said modulated impulses are received; comparator means electrically connected to said pulse rate converter for receiving said analog DC potential and producing an electrical output signal when said analog DC potential is equal to or less than a reference DC potential corresponding to said selected vehicle speed; a pulse counter electrically connected to said conditioner means through a first switching means responsive to said electrical output signal.