US3237867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trrigation system
Assignee: J B KNIGHT CO Inc
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Filing: 1963-11-14
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Granted: 1966-03-01
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Carl D Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:14
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
IN AN IRRIGATION SYSTEM HAVING (A) A PIPE ADAPTED TO BE DRAGGED AXIALLY ALONG THE LAND TO BE IRRIGATED, (B) A SPRINKLER ON SAID PIPE ADAPTED TO SPRINKLE WATER ONTO THE LAND TO BE IRRIGATED, AND (C) MEANS FOR SUPPLYING SAID PIPE WITH WATER UNDER PRESSURE, THE IMPROVEMENT COMPRISING: (D) A SLED ATTACHED TO THE PIPE, (E) A CYLINDER EXTENDING VERTICALLY UPWARD FROM THE SLED, (F) A PISTON IN THE CYLINDER, (G) A SPRING IN THE CYLINDER BIASING THE PISTON TO ONE POSITION, (H) A FLUID CONNECTION FROM THE PIPE TO THE CYLINDER SO THAT THE PRESSURE OF THE WATER IN THE PIPE BIASES THE PISTON IN THE OPPOSITE DIRECTION FROM THE BIAS OF THE SPRING, (I) AT LEAST TWO LEGS PIVOTED TO THE SLED, AND (J) MEANS INTERCONNECTING THE PISTON AND LEGS FOR MOVING THE LEGS TO A DOWNWARD PIPE STABILIZING POSITION WHEN THE PISTON IS MOVED BY WATER PRESSURE, AND (K) SAID MEANS INTERCONNECTING THE PISTON AND LEGS ACTING AS MEANS FOR MOVING THE LEGS TO AN UPWARD PIPE MOVING POSITON WHEN THE PISTON IS MOVED BY SPRING BIAS.
Claim 2
Dependent Claim
181 words
IN AN IRRIGATION SYSTEM HAVING (A) A PIPE ADAPTED TO BE DRAGGED AXIALLY ALONG THE LAND TO BE IRRIGATED, (B) A SPRINKLER ON SAID PIPE ADAPTED TO SPRINKLE WATER ONTO THE LAND TO BE IRRIGATED, AND (C) MEANS FOR SUPPLYING SAID PIPE WITH WATER UNDER PRESSURE, THE IMPROVEMENT COMPRISING: (D) A SLED ATTACHED TO THE PIPE, (E) A CYLINDER EXTENDING VERTICALLY UPWARD FROM THE SLED, (F) A PISTON IN THE CYLINDER, (G) A SPRING IN THE CYLINDER BIASING THE PISTON TO ONE POSITION, (H) A FLUID CONNECTION FROM THE PIPE TO THE CYLINDER SO THAT THE PRESSURE OF THE WATER IN THE PIPE BIASES THE PISTON IN THE OPPOSITE DIRECTION FROM THE BIAS OF THE SPRING, (I) AT LEAST TWO LEGS PIVOTED TO THE SLED, AND (J) MEANS INTERCONNECTING THE PISTON AND LEGS FOR MOVING THE LEGS TO A DOWNWARD PIPE STABILIZING POSITION WHEN THE PISTON IS MOVED BY WATER PRESSURE, AND (K) SAID MEANS INTERCONNECTING THE PISTON AND LEGS ACTING AS MEANS FOR MOVING THE LEGS TO AN UPWARD PIPE MOVING POSITON WHEN THE PISTON IS MOVED BY SPRING BIAS.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |