US3874807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled asphalt spreader
Assignee: Manitou Equipment America LLC
•
Filing: 1973-04-16
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Granted: 1975-04-01
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Expires: 1993-04-16
Abstract
Abstract An asphalt spreader mounted on its own ground supporting wheels including driven wheels which are power operated by means of a chain driven from a hydraulic motor operated by a pump driven by an engine mounted on the asphalt spreader. The asphalt spreader includes a heavy steel structure frame having a platform at the rear on which the operator stands and having a large movable asphalt bed separated from the operator''s platform by a large vertical wall. The bed is selectively operable to be raised or lowered by means of hydraulic cylinders and the asphalt is distributed from the bed by means of an elongated opening at the back of the machine separated into two spaces each having a power driven helical conveyor mounted therein to distribute the asphalt through the exit opening. The operator platform is adjustable and is stabilized.
Inventors
- 👤 R Otis Puckett
- 👤 J Richard Puckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:25
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4873
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
193 words
In a machine for distributing hot asphalt and the like wherein there is a machine structure comprising a machine frame having ground support wheels thereon, a movable bed mounted on the top of said frame and being movable to elevate same to distribute hot asphalt on said bed from the machine, said machine structure having a conveyor space defined by the machine structure on the frame through which the hot asphalt and the like is distributed, the improvement comprising: a conveyor means operatively related to said machine frame and mounted for operation in said space, said conveyor directing the hot asphalt to respective sides of said frame, and out of said space, a pivoted gate on said machine operatively mounted on said machine frame to adjust the space from which said asphalt is distributed, said conveyor and said gate being operatively mounted on said machine frame for simultaneous movement on said machine frame whereby said conveyor is moved either toward or away from said movable bed when said gate is opened or closed to increase or reduce the space from which the asphalt is conveyed and to adjust said conveyor in said space.
Claim 2
Dependent Claim
193 words
In a machine for distributing hot asphalt and the like wherein there is a machine structure comprising a machine frame having ground support wheels thereon, a movable bed mounted on the top of said frame and being movable to elevate same to distribute hot asphalt on said bed from the machine, said machine structure having a conveyor space defined by the machine structure on the frame through which the hot asphalt and the like is distributed, the improvement comprising: a conveyor means operatively related to said machine frame and mounted for operation in said space, said conveyor directing the hot asphalt to respective sides of said frame, and out of said space, a pivoted gate on said machine operatively mounted on said machine frame to adjust the space from which said asphalt is distributed, said conveyor and said gate being operatively mounted on said machine frame for simultaneous movement on said machine frame whereby said conveyor is moved either toward or away from said movable bed when said gate is opened or closed to increase or reduce the space from which the asphalt is conveyed and to adjust said conveyor in said space.
Claim 3
Dependent Claim
40 words
The device claimed in claim 1 wherein there are at least two separate and independent conveyors operatively mounted on said frame in said space and at least one of said conveyors on each side conveying asphalt toward a respective side.
Claim 4
Dependent Claim
88 words
The device claimed in claim 1 wherein there are at least two conveyors operatively mounted on said frame in said space, said space being divided into at least two separate sections in which at least one of each of said conveyors is positioned, there being a respective gate for each of said conveyors separate and independent from the other gates, and means operatively mounted on said machine frame for causing simultaneous movement of said respective gate and the respective conveyor therewith when said gate is opened or closed.
Claim 5
Dependent Claim
22 words
The device claimed in claim 3: said conveyor and a respective gate being mounted together operatively on said frame for simultaneous movement.
Claim 6
Dependent Claim
12 words
The device in claim 3 wherein said conveyors are helical screw conveyors.
Claim 7
Dependent Claim
38 words
The device claimed in claim 4 wherein each respective conveyor has a respective power means connected thereto and said respective gate and said respective conveyor being mounted together for simultaneous movement independently of the other conveyors and gates.
Claim 8
Dependent Claim
32 words
The device claimed in claim 6 wherein said power means for said respective conveyors is a hydraulic motor and said conveyor has a shaft thereon which is driven by said hydraulic motor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |