US3700849A — Multiple grooving of pavement

Claim 1

Independent Claim 137 words

Procedure for producing multiple parallel grooves in pavement to improve traction thereon when wet, comprising the steps of rotating cutting means in grooving engagement with the pavement at a multiplicity of laterally spaced locations and simultaneously moving the rotating cutting means in the grooving direction, thereby dislodging particles of pavement material and denser particles of reusable cutting material from the cutting means during groove formation; supplying water thereto and thereby forming a slurry of such particles, and collecting such slurry; scrubbing the grooved pavement subsequent to such original slurry formation and subjecting water used in such subsequent scrubbing step to a hydrocycloning step, concentrating particles of reusable cutting material by hydrocycloning the slurry, and so recovering particles of reusable cutting material therefrom; and disposing of the residual slurry containing component particulate pavement material at a remote location.

Claim 2

Dependent Claim 137 words

Procedure for producing multiple parallel grooves in pavement to improve traction thereon when wet, comprising the steps of rotating cutting means in grooving engagement with the pavement at a multiplicity of laterally spaced locations and simultaneously moving the rotating cutting means in the grooving direction, thereby dislodging particles of pavement material and denser particles of reusable cutting material from the cutting means during groove formation; supplying water thereto and thereby forming a slurry of such particles, and collecting such slurry; scrubbing the grooved pavement subsequent to such original slurry formation and subjecting water used in such subsequent scrubbing step to a hydrocycloning step, concentrating particles of reusable cutting material by hydrocycloning the slurry, and so recovering particles of reusable cutting material therefrom; and disposing of the residual slurry containing component particulate pavement material at a remote location.

Claim 3

Dependent Claim 84 words

In multiple grooving of pavement to improve traction thereon when wet, including rotating cutting blades comprising diamond particles in contact with the pavement at a cutting location and thereby dislodging particles of pavement material from the pavement and reusable diamond particles from the cutting blades, the improvement comprising reclaiming dislodged diamond particles for subsequent reuse, including subsequently scrubbing the pavement at the former cutting location, thereby forming a slurry of dislodged particles in water, and collecting such slurry for reclamation of diamond particles therefrom.

Claim 4

Dependent Claim 26 words

Process according to claim 2, including performing the scrubbing step while the pavement is wet from slurrying performed previously in the vicinity of the cutting location.

Claim 5

Dependent Claim 72 words

In multiple grooving of pavement utilizing cutting material comprising diamonds, wherein particles of pavement material are dislodged from the pavement and reusable diamonds are dislodged from the cutting material and the various particles are slurried together with water, the improvement comprising recovering some of the slurried particulate material in the immediate vicinity of the cutting operation, thereafter scrubbing the grooved pavement, and recovering residual particulate material left thereon by the cutting operation.

Claim 6

Dependent Claim 72 words

In multiple grooving of pavement utilizing cutting material comprising diamonds, wherein particles of pavement material are dislodged from the pavement and reusable diamonds are dislodged from the cutting material and the various particles are slurried together with water, the improvement comprising recovering some of the slurried particulate material in the immediate vicinity of the cutting operation, thereafter scrubbing the grooved pavement, and recovering residual particulate material left thereon by the cutting operation.

Claim 7

Dependent Claim 21 words

Process according to claim 4, including the subsequent steps of separating from the recovered material predominantly liquid and predominantly solid fractions.

Claim 8

Dependent Claim 33 words

Process according to claim 5, including the further step of separating from the predominantly solid material a first fraction consisting essentially of pavement material and a second fraction consisting essentially of cutting material.

Claim 9

Dependent Claim 19 words

Process according to claim 6, including the step of reclaiming diamonds from the fraction consisting essentially of cutting material.

Claim 10

Dependent Claim 13 words

Process according to claim 4, wherein water is supplied to the scrubbing location.

Claim 11

Dependent Claim 17 words

Process according to claim 8, including the step of brushing the grooved pavement at the scrubbing location.

Claim 12

Dependent Claim 133 words

Procedure for producing multiple parallel grooves in pavement to improve traction thereon when wet, comprising the steps of rotating cutting means in grooving engagement with the pavement at a multiplicity of laterally spaced locations and simultaneously moving the rotating cutting means in the grooving direction, thereby dislodging particles of pavement material and denser particles of reusable cutting material from the cutting means during groove formation; supplying water thereto and thereby forming a slurry of such particles, and collecting such slurry; scrubbing the grooved pavement subsequent to such original slurry formation and subjecting water used in such subsequent scrubbing step to a separation step, concentrating particles of reuSable cutting material, and so recovering particles of reusable cutting material therefrom; and disposing of the residual slurry containing component particulate pavement material at a remote location.

Claim 13

Dependent Claim 133 words

Procedure for producing multiple parallel grooves in pavement to improve traction thereon when wet, comprising the steps of rotating cutting means in grooving engagement with the pavement at a multiplicity of laterally spaced locations and simultaneously moving the rotating cutting means in the grooving direction, thereby dislodging particles of pavement material and denser particles of reusable cutting material from the cutting means during groove formation; supplying water thereto and thereby forming a slurry of such particles, and collecting such slurry; scrubbing the grooved pavement subsequent to such original slurry formation and subjecting water used in such subsequent scrubbing step to a separation step, concentrating particles of reuSable cutting material, and so recovering particles of reusable cutting material therefrom; and disposing of the residual slurry containing component particulate pavement material at a remote location.

Claim 14

Dependent Claim 74 words

In multiple grooving of pavement to improve traction thereon when wet, including rotating cutting blades comprising reusable abrasive particles in contact with the pavement at a cutting location and thereby dislodging particles of pavement material from the pavement and reusable abrasive particles from the cutting blades, the improvement comprising reclaiming dislodged abrasive particles for subsequent reuse, including subsequently scrubbing the pavement at the former cutting location, thereby forming a slurry of dislodged particles therefrom.

Claim 15

Dependent Claim 77 words

In multiple grooving of pavement utilizing cutting material comprising diamonds or similar abrasive particles, wherein particles of pavement material are dislodged from the pavement and reusable abrasive particles are dislodged from the cutting material and the various particles are slurried together with water, the improvement comprising recovering some of the slurried particulate material in the immediate vicinity of the cutting operation, thereafter scrubbing the grooved pavement, and recovering residual particulate material left thereon by the cutting operation.

Claim 16

Dependent Claim 77 words

In multiple grooving of pavement utilizing cutting material comprising diamonds or similar abrasive particles, wherein particles of pavement material are dislodged from the pavement and reusable abrasive particles are dislodged from the cutting material and the various particles are slurried together with water, the improvement comprising recovering some of the slurried particulate material in the immediate vicinity of the cutting operation, thereafter scrubbing the grooved pavement, and recovering residual particulate material left thereon by the cutting operation.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-10-24	1976-04-24	1976-10-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-10-24	1980-04-24	1980-10-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-10-24	1984-04-24	1984-10-24	$7700.00	Window Closed / Lapsed

Multiple grooving of pavement

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