US3765724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pavement cutting machine with tractor-trailer assembly
Assignee: BURGELMAN ASSOCIATES BV AMSTERDAM A NETHERLANDS CORP
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Filing: 1972-08-04
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Granted: 1973-10-16
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Expires: 1992-08-04
Abstract
Abstract A pavement cutting machine with tractor-trailer assembly 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 alternative low speed drive from its engine.
Inventors
- 👤 C Hatcher
- 👤 G Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
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: 9
Claim 1
Independent Claim
94 words
Pavement leveling or grooving machine comprising the combination of a tractor having an engine and traction wheels driven by said engine, said tractor having a trailer hitch with a tank trailer through an extended overhead frame member, an engine-driven cutter assembly having a hitch with said frame member ahead of said tank trailer, hydraulic cylinder means for raising or lowering said cutter, said tank trailer having a tank, said hydraulic cylinder means butting against the weight of said tank, said tank having a liquid coolant and means for supplying the same to said cutter.
Claim 2
Dependent Claim
94 words
Pavement leveling or grooving machine comprising the combination of a tractor having an engine and traction wheels driven by said engine, said tractor having a trailer hitch with a tank trailer through an extended overhead frame member, an engine-driven cutter assembly having a hitch with said frame member ahead of said tank trailer, hydraulic cylinder means for raising or lowering said cutter, said tank trailer having a tank, said hydraulic cylinder means butting against the weight of said tank, said tank having a liquid coolant and means for supplying the same to said cutter.
Claim 3
Dependent Claim
110 words
Pavement leveling or grooving machine comprising the combination of a tractor having an engine for driving traction wheels with an alternative hydraulic drive operated by said engine for said wheels, said tractor having trailers including a first trailer having a rotary cutter assembly with an independent engine for operating the same, and a second trailer having a liquid coolant tank with means for supplying liquid coolant to said cutter, means being provided for retrieving the coolant and cuttings from said cutter for delivery to said tank, said tank including means for filtering the coolant and cuttings thus retrieved and for delivering the filtered coolant from the tank to said cutter.
Claim 4
Dependent Claim
110 words
Pavement leveling or grooving machine comprising the combination of a tractor having an engine for driving traction wheels with an alternative hydraulic drive operated by said engine for said wheels, said tractor having trailers including a first trailer having a rotary cutter assembly with an independent engine for operating the same, and a second trailer having a liquid coolant tank with means for supplying liquid coolant to said cutter, means being provided for retrieving the coolant and cuttings from said cutter for delivery to said tank, said tank including means for filtering the coolant and cuttings thus retrieved and for delivering the filtered coolant from the tank to said cutter.
Claim 5
Dependent Claim
33 words
Machine according to claim 2, said second trailer having an extension frame having a hitch with said tractor, and said first trailer having a hitch with said frame ahead of said second trailer.
Claim 6
Dependent Claim
78 words
A tractor-trailer assembly comprising: a tractor having an engine and traction wheels driven thereby, a first trailer having a hitch connection with said tractor, said first trailer having an engine-driven pavement cutter mounted thereon, and a second trailer arranged at the rear of said first trailer, said second trailer having a hitch connection with said tractor, said second trailer having a tank having a liquid coolant and means for supplying liquid coolant from said tank to said cutter.
Claim 7
Dependent Claim
78 words
A tractor-trailer assembly comprising: a tractor having an engine and traction wheels driven thereby, a first trailer having a hitch connection with said tractor, said first trailer having an engine-driven pavement cutter mounted thereon, and a second trailer arranged at the rear of said first trailer, said second trailer having a hitch connection with said tractor, said second trailer having a tank having a liquid coolant and means for supplying liquid coolant from said tank to said cutter.
Claim 8
Dependent Claim
54 words
A tractor-trailer assembly, as recited in claim 4, wherein means for operating said tractor-trailer includes means for driving said traction wheels either (a) at low speed by a hydraulic motor deriving pressure fluid from a pump operated by said engine, or (b) at comparatively high speed through a gear transmission cOupled to said engine.
Claim 9
Dependent Claim
64 words
A tractor-trailer assembly, as recited in claim 4, including a carriage frame having a forward end hitched to said tractor and having a rear end having front vehicle wheels for said second trailer, and rear vehicle wheels being provided for said second trailer, the front of said tank being supported by and having a swivel connection with the rear end of said carriage frame.
References Cited (Backward Citations)
US3598446A
Cited
US3694033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |