US3732023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil stabilization apparatus
Assignee: Metradon Associates
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Filing: 1969-03-11
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Granted: 1973-05-08
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Expires: 1989-03-11
Abstract
Abstract Apparatus is described which makes it possible to utilize old asphalt and asphalt/concrete traffic bearing surfaces in forming a stabilized base for a new traffic bearing surface. Basically, the apparatus of the invention comprises a vehicle having a transversely extending cutting blade mounted in a location to sever an upper layer of the material over which it is traveling from the remainder of the material and feed such layer rearwardly relative to the traveling vehicle to a pulverizing and mixing rotor also extending transversely of the apparatus. Besides pulverizing an old traffic bearing surface, the rotor mixes same with soil and a soil stabilizing medium such as lime or cement. The degree of pulverization and mixing, as well as the thickness of the surface layer removed, is controllable.
Inventors
- 👤 C Rank
- 👤 R Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
E; E01; E01C; E01C21/00; E01C23/00; E01C23/06; E01C23/065; E01C23/12; E01C23/121
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
A soil stabilizing and pulverizing apparatus comprising a vehicle adapted for travel over a material surface, a cutting and lifting blade mounted on said vehicle with a generally horizontally extending front cutting edge located to cut a layer of said material from said surface and direct same rearwardly and upwardly over said blade, means for selectively altering the depth to which the cutting edge of said blade projects beneath the surface of said material to thereby change the thickness of the layer cut from said material, a mixing and pulverizing rotor mounted width-wise of said vehicle rearwardly of said cutting edge and having cutting teeth projecting generally radially outward from said rotor for engagement with the layer of material passed over said blade to chop and mix the same, the distance between the rotor teeth and said blade being adjustable independently of said blade depth to provide a selected maximum size to the particles of material discharged from between said rotor teeth and blade, and a feed roller mounted transversely of said vehicle above said cutting blade to assist said blade in feeding said layer of material rearwardly of said cutting edge and towards said rotor.
Claim 2
Dependent Claim
196 words
A soil stabilizing and pulverizing apparatus comprising a vehicle adapted for travel over a material surface, a cutting and lifting blade mounted on said vehicle with a generally horizontally extending front cutting edge located to cut a layer of said material from said surface and direct same rearwardly and upwardly over said blade, means for selectively altering the depth to which the cutting edge of said blade projects beneath the surface of said material to thereby change the thickness of the layer cut from said material, a mixing and pulverizing rotor mounted width-wise of said vehicle rearwardly of said cutting edge and having cutting teeth projecting generally radially outward from said rotor for engagement with the layer of material passed over said blade to chop and mix the same, the distance between the rotor teeth and said blade being adjustable independently of said blade depth to provide a selected maximum size to the particles of material discharged from between said rotor teeth and blade, and a feed roller mounted transversely of said vehicle above said cutting blade to assist said blade in feeding said layer of material rearwardly of said cutting edge and towards said rotor.
Claim 3
Dependent Claim
189 words
A soil stabilizing and pulverizing apparatus comprising a vehicle adapted for travel over a material surface, a cutting and lifting blade mounted on said vehicle with a generally horizontally extending front cutting edge located to cut a layer of said material from said surface and direct same rearwardly and upwardly over said blade, means for selectively altering the depth to which the cutting edge of said blade projects beneath the surface of said material to thereby change the thickness of the layer cut from said material, a mixing and pulverizing rotor mounted width-wise of said vehicle rearwardly of said cutting edge and having cutting teeth projecting generally radially outward from said rotor for engagement with the layer of material passed over said blade to chop and mix the same, the distance between the rotor teeth and said blade being adjustable independently of said blade depth to provide a selected maximum size to the particles of material discharged from between said rotor teeth and blade, and means for varying the location of said cutting blade in the general plane thereof and relative to said rotor to provide said distance adjustment.
Claim 4
Dependent Claim
189 words
A soil stabilizing and pulverizing apparatus comprising a vehicle adapted for travel over a material surface, a cutting and lifting blade mounted on said vehicle with a generally horizontally extending front cutting edge located to cut a layer of said material from said surface and direct same rearwardly and upwardly over said blade, means for selectively altering the depth to which the cutting edge of said blade projects beneath the surface of said material to thereby change the thickness of the layer cut from said material, a mixing and pulverizing rotor mounted width-wise of said vehicle rearwardly of said cutting edge and having cutting teeth projecting generally radially outward from said rotor for engagement with the layer of material passed over said blade to chop and mix the same, the distance between the rotor teeth and said blade being adjustable independently of said blade depth to provide a selected maximum size to the particles of material discharged from between said rotor teeth and blade, and means for varying the location of said cutting blade in the general plane thereof and relative to said rotor to provide said distance adjustment.
Claim 5
Dependent Claim
38 words
The soil stabilizing and pulverizing machine according to claim 2 wherein said cutting blade includes a plate extending transversely of said vehicle and movable longitudinally relative thereto toward and away from said rotor to provide said distance adjustment.
Claim 6
Dependent Claim
109 words
The soil stabilizing and pulverizing machine of claim 2 wherein said rotor includes a rotor shaft extending transversely of said vehicle in a generally horizontal plane and a plurality of rotor discs spaced apart coaxially along said shaft and normal thereto, each of said discs having a plurality of equally spaced apart teeth projecting radially outward therefrom and towards said blade for engagement with said material, each of said teeth including a shank portion fitted within a channel shaped holder rigidly secured to the disc with which said tooth is associated, said tooth being secured within said holder by a split bolt passing through said holder and said tooth.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |