US3877401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil injection means
Assignee: Caterpillar Inc
•
Filing: 1973-12-17
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Granted: 1975-04-15
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Expires: 1993-12-17
Abstract
Abstract An earthworking vehicle is provided with readily mountable and demountable injection means for injecting fluid mixtures of chemical soil stabilizing agents or other soil-treating agents beneath the soil surface. The injection means include a plurality of hollow, soil-penetrating injector members mounted on a horizontal adapter beam affixed to the earthworking vehicle. The injector members are rigidly fixed against lateral displacement, but are spring-biased by a biasing spring against upward vertical movement to permit limited vertical displacement in response to encounters with a predetermined resistance in the soil sufficient to overcome the downward load of the biasing spring. The injector members are provided with wear-resistant tips and shielded discharge ports for discharging fluid supplied to the injector members beneath the soil surface. The earthworking vehicle may be provided with soil scarifying, injection means protection, or other means appropriately located to impart these additional functions to the vehicle.
Inventors
- 👤 Nathan Gutman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:16
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
Injection means for injecting soil treating fluid beneath the surface of the soil, said injection means including a plurality of straight, elongated, hollow injector members, each having at a distal end thereof a fluid discharge port and being connected at the opposite end thereof to a soil treating fluid supply source, said injector members being slidably mounted with respect to the beam at fixed, lateral intervals on a horizontal beam by mounting means which restrain lateral movement of the injector members and which permit limited vertical movement of said members in response to the application of a predetermined force in an upwards direction to said members, said mounting means including separate spring means on each of said injector members for spring-biasing each of said injector members in a downward direction to restrain said members against upward vertical displacement with respect to said horizontal beam until sufficient force is applied to said members in an upward vertical direction to overcome the force of said spring means.
Claim 2
Dependent Claim
165 words
Injection means for injecting soil treating fluid beneath the surface of the soil, said injection means including a plurality of straight, elongated, hollow injector members, each having at a distal end thereof a fluid discharge port and being connected at the opposite end thereof to a soil treating fluid supply source, said injector members being slidably mounted with respect to the beam at fixed, lateral intervals on a horizontal beam by mounting means which restrain lateral movement of the injector members and which permit limited vertical movement of said members in response to the application of a predetermined force in an upwards direction to said members, said mounting means including separate spring means on each of said injector members for spring-biasing each of said injector members in a downward direction to restrain said members against upward vertical displacement with respect to said horizontal beam until sufficient force is applied to said members in an upward vertical direction to overcome the force of said spring means.
Claim 3
Dependent Claim
41 words
The invention of claim 1, wherein said injector members are provided with a conical wear-resistant tip at the trailing end thereof, and each said fluid discharge ports are located in a groove formed adjacent to the base of said conical tip.
Claim 4
Dependent Claim
14 words
The invention of claim 2 wherein said soil treating fluid is a lime slurry.
Claim 5
Dependent Claim
26 words
The invention of claim 3, wherein said earthworking vehicle is a crawler tractor, and said horizontal beam is attached to a blade affixed to said tractor.
Claim 6
Dependent Claim
25 words
The invention of claim 3, wherein said earthworking vehicle includes soil scarifying means positioned to precede said injection means during forward operation of said vehicle.
Claim 7
Dependent Claim
19 words
The invention of claim 5, wherein said scarifying means is a scarifier shank mounted ahead of said injection means.
Claim 8
Dependent Claim
23 words
The invention of claim 1 wherein said mounting means comprise bores in said horizontal beam through which said injector members are slidably fitted.
Claim 9
Dependent Claim
40 words
The invention of claim 7 wherein said mounting means further comprise a spring seat fixed to each said injector member and wherein said spring means comprise a spring on each injector member intermediate said horizontal beam and said spring seat.
Claim 10
Dependent Claim
32 words
The invention of claim 8 wherein said mounting means further comprises a detachable collar slidably fitted around each said injector member and means releasably securing said collar to each said injector member.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |