Patent US4411101A successfully refreshed from Google Patents.
US4411101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for heating the root zone of plants
Assignee: Individual
•
Filing: 1981-08-17
•
Granted: 1983-10-25
•
Expires: 2001-08-17
Abstract
Abstract An apparatus and method for root zone heating of plants is disclosed. The apparatus includes an array of flexible, individually movable, plastic tubes which are positioned under the plant root systems. The tubes are preferably formed of EPDM plastic enabling their use with water from geothermal and solar pond sources, as well as conventional sources.
Inventors
- 👤 Edward A. Springer
- 👤 Ronald D. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:56
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/245; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
Apparatus for root zone heating of plants comprising: input manifold means, outlet manifold means, and an array of fluid conveying heating tubes each coupled to said input manifold means and said outlet manifold means for the flow of a heating fluid therethrough, said tubes being substantially cylindrical and being formed of a flexible self-supporting elastomeric terpolymer of ethylene, propylene and diene monomer, adjacent tubes in said array being relatively spaced apart by a distance between about 2.5 centimeters and about 7.6 centimeters over substantially the entire lengths of said tubes and said tubes being positioned adjacent to growing plants, said tubes being independently movable over substantially the entire lengths thereof, and at least some of said tubes in said array being displaced from said array to a position above said array to provide for heating of the air space proximate said plants.
Claim 2
Dependent Claim
142 words
Apparatus for root zone heating of plants comprising: input manifold means, outlet manifold means, and an array of fluid conveying heating tubes each coupled to said input manifold means and said outlet manifold means for the flow of a heating fluid therethrough, said tubes being substantially cylindrical and being formed of a flexible self-supporting elastomeric terpolymer of ethylene, propylene and diene monomer, adjacent tubes in said array being relatively spaced apart by a distance between about 2.5 centimeters and about 7.6 centimeters over substantially the entire lengths of said tubes and said tubes being positioned adjacent to growing plants, said tubes being independently movable over substantially the entire lengths thereof, and at least some of said tubes in said array being displaced from said array to a position above said array to provide for heating of the air space proximate said plants.
References Cited (Backward Citations)
US3470943A
Cited
US3521699A
Cited
US3727345A
Cited
US3893507A
Cited
US3863710A
Cited
US4159595A
Cited
US4112921A
Cited
US4112921B1
Cited
US4270596A
Cited
US4270596B1
Cited
GB2060341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |