US3659536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Root feeder device
Assignee: Individual
•
Filing: 1970-10-01
•
Granted: 1972-05-02
•
Expires: 1990-10-01
Abstract
Abstract A root feeding device is disclosed, the device comprising a hollow pipe adapted to be connected to a liquid source and having a generally pointed central rod suspended past the lower end thereof. A valve core is slidably disposed in the pipe concentrically about the central rod, the valve core extending beyond the pipe and defining a leading tip therefor. The central rod and the valve core provide axial fluid flow when the valve core is retracted into the pipe, thus aiding immersion of the pipe into the ground. When the pipe is immersed, the valve core is partially slidably retracted therefrom to thus provide radial fluid flow. Importantly, the construction is such as to obviate clogging of the apparatus by soil, pebbles and the like.
Inventors
- 👤 Robert B White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:30
CPC Classifications
A; A01; A01G; A01G29/00; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/026
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
165 words
A self-cleaning root feeder for supplying fluid material to sub-strata root systems, said root feeder comprising: an elongated hollow pipe having an inlet at the upper end thereof adapted for connection to a source of fluid; a central guide rod suspended axially in said pipe and extending beyond the lower end thereof, said guide rod terminating in a generally pointed end; a valve core means slidably disposed within said pipe and having a head adapted to abut against and extending beyond the lower end thereof, said valve core means axially embracing said central guide rod and being guided thereby by a sliding fit; and wherein the abutment of said valve core head with said pipe defines an outlet for radial fluid flow said outlet being closed when said head abuts against said lower end of said pipe and being open when in a non-abutting relationship, said sliding fit of said valve core means and said central guide rod defining an outlet for axial fluid flow.
Claim 2
Dependent Claim
165 words
A self-cleaning root feeder for supplying fluid material to sub-strata root systems, said root feeder comprising: an elongated hollow pipe having an inlet at the upper end thereof adapted for connection to a source of fluid; a central guide rod suspended axially in said pipe and extending beyond the lower end thereof, said guide rod terminating in a generally pointed end; a valve core means slidably disposed within said pipe and having a head adapted to abut against and extending beyond the lower end thereof, said valve core means axially embracing said central guide rod and being guided thereby by a sliding fit; and wherein the abutment of said valve core head with said pipe defines an outlet for radial fluid flow said outlet being closed when said head abuts against said lower end of said pipe and being open when in a non-abutting relationship, said sliding fit of said valve core means and said central guide rod defining an outlet for axial fluid flow.
Claim 3
Dependent Claim
55 words
A root feeder as defined in claim 1 wherein said valve core means is slotted internally of said pipe and wherein pin means extend crosswise through said pipe and into said slots of said valve core means, said pin means and said slots dEfining limiting means for limiting axial movement of said valve core means.
Claim 4
Dependent Claim
21 words
A root feeder as defined in claim 2, wherein said central guide rod is suspended in said pipe by pin means.
Claim 5
Dependent Claim
57 words
A root feeder as described in claim 1, wherein said pipe has a surface at the lower end which generally conforms to and mates with a complementary surface on said head of said axially slidable valve core, and wherein said axially slidable valve core means has a bore therethrough into which bore passes said central guide rod.
Claim 6
Dependent Claim
61 words
A root feeder as described in claim 4, wherein the central guide rod carried by said pipe is generally helical and wherein said pipe carries a spring means providing pressure tending to slide said valve core means out of said pipe and expose said complementary surface of said axially slidable valve core, to thereby open said outlet for radial fluid flow.
Claim 7
Dependent Claim
152 words
A root feeder comprising a pipe, inlet means at the upper end of said pipe for receiving fluid under pressure and valve and point means at the lower end of said pipe, said valve and point means including a central guide rod having a generally pointed end and a valve core slidable in said pipe, said valve core having an axial bore through which said central guide rod passes, pin means retaining said central guide rod against removal from said pipe, and pin means providing an extended position and retracted position retaining said valve core against removal from said pipe, radial fluid outlet means comprising an axial space between said valve core and said pipe which is closed when said valve core is retracted and which is open when said valve core is extended, and axial fluid outlet means comprising a radial space between said valve core and said central guide rod.
Claim 8
Dependent Claim
152 words
A root feeder comprising a pipe, inlet means at the upper end of said pipe for receiving fluid under pressure and valve and point means at the lower end of said pipe, said valve and point means including a central guide rod having a generally pointed end and a valve core slidable in said pipe, said valve core having an axial bore through which said central guide rod passes, pin means retaining said central guide rod against removal from said pipe, and pin means providing an extended position and retracted position retaining said valve core against removal from said pipe, radial fluid outlet means comprising an axial space between said valve core and said pipe which is closed when said valve core is retracted and which is open when said valve core is extended, and axial fluid outlet means comprising a radial space between said valve core and said central guide rod.
References Cited (Backward Citations)
DE465713C
Cited
US1688356A
Cited
US1756582A
Cited
US1893707A
Cited
US1964064A
Cited
US3397541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |