Patent US3779606A successfully refreshed from Google Patents.
US3779606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pavement cutting machine with improved liquid coolant supply
Assignee: BURGELMAN ASSOCIATES BV AMSTERDAM A NETHERLANDS CORP
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Filing: 1972-08-31
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Granted: 1973-12-18
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Expires: 1992-08-31
Abstract
Abstract A pavement cutting machine for cutting bumps or grooves. A tractor has a hitch with a cutter trailer and a tank trailer. The tank picks up the sludge from the cutter, filters it and recirculates the filtered water to the cutter. A shroud has a wall around the cutter to provide a vacuum chamber having suction nozzles to pick up the sludge. The nozzles are in the form of upright tubular members having a length sufficient for the lower ends of the nozzles to contact the pavement during operation of the cutter. The cutter and its engine, also the vacuum chamber and nozzles are all carried by a support which is raised or lowered by hydaulic cylinders. The cutter device is a single cutter or two cutters having overlapping shafts at their inner ends with the spacing between adjacent cutting disks the same as on each cutter for cutting grooves or overlapped for cutting bumps.
Inventors
- 👤 C Hatcher
- 👤 G Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:32
CPC Classifications
B; B23; B23D; B23D59/00; B23D59/02; E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; E01C2301/00; E01C2301/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
Liquid coolant supply for rotary pavement cutter wherein a vehicle having traction wheels is provided for transporting a rotary pavement cutter, means being provided for supplying a liquid coolant to the cutter, said cutter being housed in a vacuum chamber having a side wall having a lower edge in sealing contact with the pavement around the cutter, a tank, means for creating a reduced fluid pressure in said tank, the improvement wherein said chamber has a rectangular series of upright tubular suction nozzles with conduit means connected to said tank and to said nozzles for returning the coolant and cuttings to the tank, said nozzles having lower ends and having a length sufficient for said lower ends to contact the pavement during operation of said cutter.
Claim 2
Dependent Claim
126 words
Liquid coolant supply for rotary pavement cutter wherein a vehicle having traction wheels is provided for transporting a rotary pavement cutter, means being provided for supplying a liquid coolant to the cutter, said cutter being housed in a vacuum chamber having a side wall having a lower edge in sealing contact with the pavement around the cutter, a tank, means for creating a reduced fluid pressure in said tank, the improvement wherein said chamber has a rectangular series of upright tubular suction nozzles with conduit means connected to said tank and to said nozzles for returning the coolant and cuttings to the tank, said nozzles having lower ends and having a length sufficient for said lower ends to contact the pavement during operation of said cutter.
Claim 3
Dependent Claim
42 words
Liquid coolant supply according to claim 1 in combination with a trough for receiving the coolant ejected by the cutter, temperature-responsive means in said trough in position to be contacted by the ejected coolant, and a signal controlled by said temperature-responsive means.
Claim 4
Dependent Claim
173 words
Liquid coolant supply for rotary pavement cutter wherein a vehicle having traction wheels is provided for transporting a rotary pavement cutter, means being provided for supplying a liquid coolant to the cutter, a movable support for said cutter, an engine for operating said cutter carried by said support, a vacuum chamber having a side wall having an upper edge carried by said support and having a lower edge in sealing contact with the pavement around said cutter, the improvement comprising a manifold carried by said support and arranged in said chamber, said manifold having a connection to a vacuum supply and having a series of upright suction nozzles having upper ends opening into said manifold, said nozzles having lower ends and having a length sufficient for said lower ends to contact the pavement, said nozzles extending around said cutter, and means for raising or lowering said support to locate the cutter and the lower edge of said wall and the lower ends of said nozzles into or out of contact with the pavement.
Claim 5
Dependent Claim
173 words
Liquid coolant supply for rotary pavement cutter wherein a vehicle having traction wheels is provided for transporting a rotary pavement cutter, means being provided for supplying a liquid coolant to the cutter, a movable support for said cutter, an engine for operating said cutter carried by said support, a vacuum chamber having a side wall having an upper edge carried by said support and having a lower edge in sealing contact with the pavement around said cutter, the improvement comprising a manifold carried by said support and arranged in said chamber, said manifold having a connection to a vacuum supply and having a series of upright suction nozzles having upper ends opening into said manifold, said nozzles having lower ends and having a length sufficient for said lower ends to contact the pavement, said nozzles extending around said cutter, and means for raising or lowering said support to locate the cutter and the lower edge of said wall and the lower ends of said nozzles into or out of contact with the pavement.
Claim 6
Dependent Claim
183 words
Pavement cutting machine comprising an elongated rotary pavement cutter device, a liquid coolant supply for said cutter device, a vehicle having traction wheels for transporting said cutter device, said vehicle having a movable support for said cutter device, an engine for operating said cutter device, a vacuum chamber having a wall extending around said cutter device and carried by said support, said wall having a lower edge extending around said cutter device in position to form a sealing contact with the pavement the improvement wherein a manifold is carried by said support, in elevated position above the pavement, said manifold having a connection for a vacuum supply and having a series of tubular upright suction nozzles depending from said manifold and extending around said cutter device, said nozzles having upper ends opening into said manifold and having a length sufficient for its lower ends to contact the pavement, and means for raising or lowering said support to locate said cutter device and the lower edge of said wall and the lower ends of said nozzles out of or into contact with the pavement.
Claim 7
Dependent Claim
183 words
Pavement cutting machine comprising an elongated rotary pavement cutter device, a liquid coolant supply for said cutter device, a vehicle having traction wheels for transporting said cutter device, said vehicle having a movable support for said cutter device, an engine for operating said cutter device, a vacuum chamber having a wall extending around said cutter device and carried by said support, said wall having a lower edge extending around said cutter device in position to form a sealing contact with the pavement the improvement wherein a manifold is carried by said support, in elevated position above the pavement, said manifold having a connection for a vacuum supply and having a series of tubular upright suction nozzles depending from said manifold and extending around said cutter device, said nozzles having upper ends opening into said manifold and having a length sufficient for its lower ends to contact the pavement, and means for raising or lowering said support to locate said cutter device and the lower edge of said wall and the lower ends of said nozzles out of or into contact with the pavement.
Claim 8
Dependent Claim
42 words
Pavement cutting machine according to claim 4, said rotary pavement cutter device comprising two elongated cutters arranged end-to-end, said cutters extending transversely of the direction of travel of said vehicle, said manifold and said suction nozzles extending around both of said cutters.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |