Patent US3843274A successfully refreshed from Google Patents.
US3843274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt reclaimer
Assignee: Caterpillar Inc
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Filing: 1972-09-25
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Granted: 1974-10-22
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Expires: 1992-09-25
Abstract
Abstract A vehicle rides on a front pair and a rear pair of tracks, each pair straddling apparatus for working the upper layer of asphalt of a road as the vehicle is driven forwardly over the road. The apparatus includes means for heating the upper layer of asphalt, a rotating cutter for lifting the heated asphalt, a pugmill for pulverizing the lifted asphalt, a spreader for distributing the pulverized asphalt, and a leveler for leveling the distributed asphalt. Such operations take place continuously as the vehicle is driven forwardly over the road. In addition, the distance between the front pair of tracks and the distance between the rear pair of tracks may be varied to alter the stance of the vehicle.
Inventors
- 👤 E Volle
- 👤 N Gutman
- 👤 D Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:35
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/084; E; E01; E01C; E01C19/00; E01C19/002; E01C23/00; E01C23/06; E01C23/065; E01C23/12; E01C23/122; E01C23/127
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
In a vehicle, apparatus for working a layer of workable asphalt or the like which make up the upper covering layer of a road, as the vehicle is driven forwardly over the road, said apparatus comprising: infra-red heating means associated with the forward end of the vehicle for heating the upper layer of asphalt to a soft and more workable condition; rotating cutting means associated with the vehicle and disposed transversely thereof rearwardly of the heating means for cutting the heated upper layer of asphalt, whereby the upper layer of asphalt is lifted; means associated with the vehicle rearwardly of the cutting means for pulverizing the lifted asphalt; a spreader screw associated with the vehicle and disposed transversely thereof rearwardly of the pulverizing means for distributing the pulverized asphalt across the road; and, leveling means associated with the vehicle rearwardly of the spreader screw for generally evenly leveling the distributed asphalt, werein the apparatus further compriseS means for heating the pulverizing means to thereby heat said asphalt being pulverized.
Claim 2
Dependent Claim
169 words
In a vehicle, apparatus for working a layer of workable asphalt or the like which make up the upper covering layer of a road, as the vehicle is driven forwardly over the road, said apparatus comprising: infra-red heating means associated with the forward end of the vehicle for heating the upper layer of asphalt to a soft and more workable condition; rotating cutting means associated with the vehicle and disposed transversely thereof rearwardly of the heating means for cutting the heated upper layer of asphalt, whereby the upper layer of asphalt is lifted; means associated with the vehicle rearwardly of the cutting means for pulverizing the lifted asphalt; a spreader screw associated with the vehicle and disposed transversely thereof rearwardly of the pulverizing means for distributing the pulverized asphalt across the road; and, leveling means associated with the vehicle rearwardly of the spreader screw for generally evenly leveling the distributed asphalt, werein the apparatus further compriseS means for heating the pulverizing means to thereby heat said asphalt being pulverized.
Claim 3
Dependent Claim
26 words
The vehicle of claim 1 werein the apparatus further comprises means for vibrating and heating the leveling means as said leveling means levels the distributed asphalt.
Claim 4
Dependent Claim
29 words
The vehicle of claim 2 wherein the apparatus further comprises means for adjusting the infra-red heating means upwardly and downwardly relative to the road to vary the distance therebetween.
Claim 5
Dependent Claim
38 words
The vehicle of claim 3 wherein the apparatus further comprises means for adjusting the leveling means upwardly and downwardly relative to the vehicle so that the height of the leveled material relative to the vehicle may be chosen.
Claim 6
Dependent Claim
19 words
The vehicle of claim 4 wherein the apparatus further comprises means for adding oil to the asphalt being pulverized.
Claim 7
Dependent Claim
35 words
The vehicle of claim 5 wherein the apparatus further comprises means for adjusting the spreader screw upwardly and downwardly relative to the vehicle so that the height thereof relative to the vehicle may be chosen.
Claim 8
Dependent Claim
79 words
The vehicle of claim 1 wherein the vehicle includes and is supported by a forward pair of members disposed on opposite sides of the apparatus and a rearward pair of members disposed on opposite sides of the apparatus, said members being rotable over the surface of the road, and further comprising means for selectively increasing and decreasing the distance between the forward pair of members, and for selectively increasing and decreasing the distance between the rearward pair of members.
Claim 9
Dependent Claim
98 words
The vehicle according to claim 7 wherein the means for selectively increasing and decreasing said distances comprise (i) four arms, one arm associated with each member, each arm having one end pivotally fixed relative to the vehicle and the other end pivotally fixed to its associated member, the pivoting of the arms outwardly of the vehicle increasing the distances between the respective pairs of members, the pivoting of the arms inwardly of the vehicle decreasing the distances between the respective pairs of members, and (ii) cylinder means associated with each arm to provide such pivoting of the arms.
Claim 10
Dependent Claim
14 words
The vehicle of claim 8 wherein the arms extend generally forwardly of the vehicle.
Claim 11
Dependent Claim
12 words
The vehicle of claim 9 wherein each member comprises an endless track.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |