US3895843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road planing machine
Assignee: British Jeffrey Diamond Ltd
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Filing: 1973-10-23
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Granted: 1975-07-22
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Expires: 1993-10-23
Abstract
Abstract A small road planing machine for doing close work. The machine is supported on the road surface by two wheels on one side, and one wheel on the opposite side. The two wheels on the one side are power driven to propel the machine. A road planing or cutting drum is at the one side of the machine intermediate and longitudinally aligned with the two wheels. The road planing or cutting drum is transversely aligned with the one wheel on the opposite side. The road planing drum is adjustable upwardly and downwardly, and is adjustable in its inclination to meet the road surface and to cut the road surface to a preselected depth. The two wheels at the one side of the machine may be turned for steering the machine. The axes of the two wheels at the one side and the one wheel at the opposite side intersect in a point in all turned positions of the two wheels, such that the wheels travel about the point of intersection during turning. The road planing drum also travels about the point of intersection during turning of the road planing machine, which permits accurate steering of machine with the planing or cutting drum operating in a curved path.
Inventors
- 👤 Christopher Wall
- 👤 Ronald Scaife
- 👤 Thomas A Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:15
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
142 words
A planing machine for planing roads or other paved surfaces, comprising: a frame; first and second ground engaging supporting means mounted at fore and aft locations along one side of said frame; third ground engaging supporting means mounted on the opposite side of said frame, said first, second and third ground engaging means co-operatively supporting said frame on said surface and capable of moving said frame along a smooth tightly curved path on said surface; rotary planing means mounted on said frame intermediate and in alignment with said fore and aft ground engaging means and in transverse alignment opposite said third ground engaging means, said planing means being adapted to engage the paved surface for cutting material from the paved surface to a controlled depth; and power means to propel said machine along said surface and to drive said rotary planing means.
Claim 2
Dependent Claim
142 words
A planing machine for planing roads or other paved surfaces, comprising: a frame; first and second ground engaging supporting means mounted at fore and aft locations along one side of said frame; third ground engaging supporting means mounted on the opposite side of said frame, said first, second and third ground engaging means co-operatively supporting said frame on said surface and capable of moving said frame along a smooth tightly curved path on said surface; rotary planing means mounted on said frame intermediate and in alignment with said fore and aft ground engaging means and in transverse alignment opposite said third ground engaging means, said planing means being adapted to engage the paved surface for cutting material from the paved surface to a controlled depth; and power means to propel said machine along said surface and to drive said rotary planing means.
Claim 3
Dependent Claim
39 words
A planing machine for planing road surfaces as recited in claim 1 in which each of said ground engaging supporting means includes a rotatably mounted wheel, and said power means includes means to drive said fore and aft wheels.
Claim 4
Dependent Claim
28 words
A planing machine for planing road surfaces as recited in claim 2 in which said planing means is disposed midway between said fore and aft ground engaging wheels.
Claim 5
Dependent Claim
64 words
A planing machine for planing road surfaces as recited in claim 2 in which said planing means comprises a rotary cutting drum disposed midway between said fore and aft ground engaging wheels, and wherein said power means comprises hydraulic power means to rotate the fore and aft wheels and separate hydraulic power means to rotate said cutting drum in engagement with the road surface.
Claim 6
Dependent Claim
74 words
A planing machine for planing road surfaces as recited in claim 3 in which each of said fore and aft wheels is mounted on an upright pivot, and further including a steering linkage connected to each of said fore and aft wheels to turn the wheels on their respective pivots for steering the planing machine and to operate said cutting drum in a curved path, and hydraulic power means to operate said steering linkage.
Claim 7
Dependent Claim
44 words
A planing machine for planing road surfaces as recited in claim 2 in which each of said fore and aft ground engaging wheels is mounted on an upright pivot for steering the planing machine and to operate said planing means in a curved path.
Claim 8
Dependent Claim
65 words
A planing machine for planing road surfaces as recited in claim 6 in which said planing means comprises a cutting drum disposed on a transverse axis, means to rotate said cutting drum in engagement with the road surface, and the axis of said cutting drum and the axis of said ground engaging wheel of said third supporting means being located in the same upright plane.
Claim 9
Dependent Claim
45 words
A planing machine for planing road surfaces as recited in claim 7 in which said cutting drum has radially extending cutting bits secured to said cutting drum in positions effective to engage the road surface and remove material therefrom upon rotation of said cutting drum.
Claim 10
Dependent Claim
79 words
A planing machine for planing road surfaces as recited in claim 7 including a support for said planing means on said main frame, said support extending down toward the road surface to support the planing means at the road surface, lift adjusting means to adjust the elevation of the support and the planing means relative to the ground surface, and tilt adjusting means to adjust the inclination of the axis of said planing means relative to the ground surface.
Claim 11
Dependent Claim
42 words
A planing machine for planing road surfaces as recited in claim 9 including means to connect said lift adjusting means between said main frame and said support, and means to connect said tilt adjusting means between said main frame and said support.
Claim 12
Dependent Claim
38 words
A planing machine for planing road surfaces as recited in claim 9 including pivoted connecting means for said support on said main frame to permit elevating movement and tilting movement of the support relative to said main frame.
Claim 13
Dependent Claim
78 words
A planing machine for planing road surfaces as recited in claim 9 including a connecting link between said support and said main frame, first pivot means to hold said connecting link to said main frame and second pivot means to hold said connecting link to said support to permit elevating movement and tilting movement of the support relative to said main frame by movement of said support and said connecting link about said first and second pivot means.
Claim 14
Dependent Claim
75 words
A planing machine for planing road surfaces as recited in claim 12 in which said lift adjusting means comprises an extensible and retractable hydraulic cylinder, pivot means connecting the ends of said lift hydraulic cylinder to said main frame and to said support, respectively, said tilt adjusting means comprises an extensible and retractable hydraulic cylinder, and pivot means connecting the ends of said tilt hydraulic cylinder to said main frame and to said support, respectively.
Claim 15
Dependent Claim
145 words
A planing machine for planing road surfaces comprising, a longitudinally extending main frame, ground engaging supporting means to support the planing machine on a road surface, said ground engaging supporting means including a fore ground engaging wheel and an aft ground engaging wheel mounted on one side of the main frame and a ground engaging wheel at the opposite side of the main frame, planing means adapted to engage the road surface for cutting material from the road surface to a pre-selected depth, means for turning the fore and aft wheels to steer the planing machine, and the axes of said fore and aft wheels and the axis of said opposite wheel intersecting each other in a point in all turned positions of said fore and aft wheels for all the wheels to travel in arcuate paths about said point of intersection as a center.
Claim 16
Dependent Claim
145 words
A planing machine for planing road surfaces comprising, a longitudinally extending main frame, ground engaging supporting means to support the planing machine on a road surface, said ground engaging supporting means including a fore ground engaging wheel and an aft ground engaging wheel mounted on one side of the main frame and a ground engaging wheel at the opposite side of the main frame, planing means adapted to engage the road surface for cutting material from the road surface to a pre-selected depth, means for turning the fore and aft wheels to steer the planing machine, and the axes of said fore and aft wheels and the axis of said opposite wheel intersecting each other in a point in all turned positions of said fore and aft wheels for all the wheels to travel in arcuate paths about said point of intersection as a center.
Claim 17
Dependent Claim
53 words
A planing machine for planing road surfaces as recited in claim 14 in which said fore and aft ground engaging wheels are disposed at approximately opposite ends of said main frame, and said opposite ground engaging wheel is disposed intermediate said fore and aft wheels in the longitudinal direction of the main frame.
Claim 18
Dependent Claim
49 words
A planing machine for planing road surfaces as recited in claim 15 in which said planing means comprises a rotary drum on a transversely extending axis and disposed to operate in an arcuate path about said point of intersection in all turned positions of said fore and aft wheels.
Claim 19
Dependent Claim
48 words
A planing machine for planing road surfaces as recited in claim 14 in which said opposite ground engaging wheel is disposed midway between said fore and aft wheels in the longitudinal direction of said main frame, and the turning movement of said fore and aft wheels is equal.
Claim 20
Dependent Claim
49 words
A planing machine for planing road surfaces as recited in claim 17 in which each of the fore and aft wheels is mounted on an upright pivot, and steering linkage means to turn said fore and aft wheels in opposite directions about the axis of each upright pivot, respectively.
Claim 21
Dependent Claim
49 words
A planing machine for planing road surfaces as recited in claim 14 in which said planing means is disposed in longitudinal alignment with said fore and aft wheels and midway between said fore and aft wheels, and said planing means is disposed in transverse alignment with said opposite wheel.
Claim 22
Dependent Claim
51 words
A planing machine for planing road surfaces as recited in claim 19 in which said planing means comprises a rotatable drum with radially directed road surface engaging bits, said planing means drum being disposed on a transverse axis that is in an upright plane with the axis of said opposite wheel.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |