US3779608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pavement cutting machine with selected drive system
Assignee: BURGELMAN ASSOCIATES BV AMSTERDAM A NETHERLANDS CORP
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Filing: 1972-08-18
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Granted: 1973-12-18
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Expires: 1992-08-18
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. One or more hydraulic cylinders for the cutter or cutters act against a frame member which supports the tank whereby the weight of the tank snubs the cutter or cutters. The tractor has an engine for driving the traction wheels of the vehicle at high speed when moving from one location to another. The tractor has an alternative hydraulic drive operated by the engine when the engine is disconnected from the traction wheels, the hydraulic drive having a low speed transmission to the traction wheels.
Inventors
- 👤 G Warner
- 👤 C Hatcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; B; B23; B23D; B23D59/00; B23D59/02; E01C2301/00; E01C2301/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
High or low power drive for pavement groover or grinder wherein an engine is provided with clutch and a first transmission unit for driving the traction wheels of a vehicle, said vehicle including a pavement leveling or grooving machine, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a hydraulic pump driven by said engine, a hydraulic motor operated by said pump and having a driving connection through said first transmission unit with said traction wheels.
Claim 2
Dependent Claim
92 words
High or low power drive for pavement groover or grinder wherein an engine is provided with clutch and a first transmission unit for driving the traction wheels of a vehicle, said vehicle including a pavement leveling or grooving machine, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a hydraulic pump driven by said engine, a hydraulic motor operated by said pump and having a driving connection through said first transmission unit with said traction wheels.
Claim 3
Dependent Claim
80 words
Drive according to claim 1, said pavement leveling or grooving machine including a rotary cutter, including another hydraulic pump operated by said enging when the same is disconnected from said traction wheels, hydraulic cylinder means in circuit with said other pump for raising or lowering said rotary cutter, a pressure relief valve for limiting the fluid pressure supplied from said first-mentioned pump to said motor, and another pressure relief valve for limiting the pressure supplied to said hydraulic cylinder means.
Claim 4
Dependent Claim
43 words
Drive according to claim 1, and including a second transmission unit having a clutch handle to connect said first transmission unit in gear or in idle position out of gear, and a driving connection from said hydraulic motor to said second transmission unit.
Claim 5
Dependent Claim
44 words
Drive according to claim 1, wherein said pump is driven by said engine through a multi-speed transmission and belt and pulley arrangement, a clutch handle being provided to disconnect said engine from said traction wheels when said wheels are driven by said hydraulic motor.
Claim 6
Dependent Claim
121 words
High power, high speed or low power, low speed drive for a vehicle having an engine with a clutch and first transmission unit for driving the traction wheels of said vehicle, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a power take-off from said engine to a fluid pressure pump for maintaining an excess fluid pressure, a hydraulic motor operated by said pump and having a driving connection through said first transmission unit at low speed to said traction wheels, and a pressure relief valve for by-passing pressure in excess of a desired value to maintain a desired minimum pressure for operating said motor.
Claim 7
Dependent Claim
121 words
High power, high speed or low power, low speed drive for a vehicle having an engine with a clutch and first transmission unit for driving the traction wheels of said vehicle, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a power take-off from said engine to a fluid pressure pump for maintaining an excess fluid pressure, a hydraulic motor operated by said pump and having a driving connection through said first transmission unit at low speed to said traction wheels, and a pressure relief valve for by-passing pressure in excess of a desired value to maintain a desired minimum pressure for operating said motor.
Claim 8
Dependent Claim
127 words
Pavement cutting machine comprising a vehicle having an engine and first transmission unit for driving traction wheels, an alternative hydraulic drive comprising a hydraulic pump operated by said engine and a hydraulic motor driven by said pump for driving said traction wheels at certain times, said vehicle having a cutter, means for raising or lowering said cutter, said engine being operative to drive said traction wheels through said first transmission unit at comparatively high speed with said cutter in idle raised position at certain times, said engine being operative to drive said traction wheels through said first transmission unit by said hydraulic drive at comparatively slow speed at other times with said cutter in operative relatIon with said pavement, and a separate engine for operating said cutter.
Claim 9
Dependent Claim
127 words
Pavement cutting machine comprising a vehicle having an engine and first transmission unit for driving traction wheels, an alternative hydraulic drive comprising a hydraulic pump operated by said engine and a hydraulic motor driven by said pump for driving said traction wheels at certain times, said vehicle having a cutter, means for raising or lowering said cutter, said engine being operative to drive said traction wheels through said first transmission unit at comparatively high speed with said cutter in idle raised position at certain times, said engine being operative to drive said traction wheels through said first transmission unit by said hydraulic drive at comparatively slow speed at other times with said cutter in operative relatIon with said pavement, and a separate engine for operating said cutter.
Claim 10
Dependent Claim
94 words
High or low power drive for pavement cutting machine wherein an engine is provided with clutch and a main transmission for driving the traction wheels of a vehicle at high speed, said vehicle having a trailer having a pavement cutting machine driven by another engine, an alternative hydraulic drive operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a fluid pressure pump driven by said engine, and a hydraulic motor operated by said pump and having a driving connection through said transmission with said traction wheels.
Claim 11
Dependent Claim
94 words
High or low power drive for pavement cutting machine wherein an engine is provided with clutch and a main transmission for driving the traction wheels of a vehicle at high speed, said vehicle having a trailer having a pavement cutting machine driven by another engine, an alternative hydraulic drive operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a fluid pressure pump driven by said engine, and a hydraulic motor operated by said pump and having a driving connection through said transmission with said traction wheels.
Claim 12
Dependent Claim
193 words
High or low power drive for pavement groover or grinder wherein an engine is provided with a clutch and a first transmission unit for driving the traction wheels of a vehicle, said vehicle including a pavement leveling or grooving machine, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a first hydraulic pump driven by said engine, a hydraulic motor operated by said first hydraulic pump and having a driving connection through said first transmission unit with said traction wheels, a rotary cutter, a separate engine for operating said cutter, a second hydraulic pump operated by said engine when the same is disconnected from said traction wheels, hydraulic cylinder means in circuit with said second pump for raising or lowering said rotary cutter, a pressure relief valuve for limiting the fluid pressure supplied from said first-mentioned pump to said motor, and another pressure relief valve for limiting the pressure supplied to said hydraulic cylinder means, and a power takeoff and driving connection at opposite sides of said first-mentioned engine for operating said first and second pumps respectively.
Claim 13
Dependent Claim
193 words
High or low power drive for pavement groover or grinder wherein an engine is provided with a clutch and a first transmission unit for driving the traction wheels of a vehicle, said vehicle including a pavement leveling or grooving machine, the improvement wherein an alternative hydraulic drive is operated by said engine when said engine is disconnected from said traction wheels, said hydraulic drive comprising a first hydraulic pump driven by said engine, a hydraulic motor operated by said first hydraulic pump and having a driving connection through said first transmission unit with said traction wheels, a rotary cutter, a separate engine for operating said cutter, a second hydraulic pump operated by said engine when the same is disconnected from said traction wheels, hydraulic cylinder means in circuit with said second pump for raising or lowering said rotary cutter, a pressure relief valuve for limiting the fluid pressure supplied from said first-mentioned pump to said motor, and another pressure relief valve for limiting the pressure supplied to said hydraulic cylinder means, and a power takeoff and driving connection at opposite sides of said first-mentioned engine for operating said first and second pumps respectively.
References Cited (Backward Citations)
US2783556A
Cited
US3694033A
Cited
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 |