US3750954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler system and adapter valve therefor
Assignee: Individual
•
Filing: 1972-04-27
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Granted: 1973-08-07
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Expires: 1992-04-27
Abstract
Abstract An elongated assembly of interconnected irrigation pipes, supported at spaced intervals on wheels, is provided at longitudinally spaced intervals with a plurality of sprinkler heads which extend from the pipe alternately in opposite directions and are connected to the pipe each by an adapter valve arranged automatically to open those heads extending upwardly from the pipe and to close those heads extending downwardly from the pipe when the latter contains water under pressure, and also to open those heads extending downwardly from the pipe when the latter contains unpressurized water, whereby to effect drainage of the pipe.
Inventors
- 👤 L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:24
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3013; B05B1/302; A; A01; A01G; A01G25/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
An irrigation sprinkler system, comprising a. an elongated pipe assembly supported above ground on spaced wheels, b. a plurality of sprinkler heads spaced apart along the pipe assembly and disposed alternately in opposite directions, and c. valve means associated with each sprinkler head and operable automatically to open to water under pressure in the pipe assembly those heads extending upwardly from the pipe assembly and to close to water under pressure in the pipe assembly those heads extending downwardly from the pipe assembly.
Claim 2
Dependent Claim
83 words
An irrigation sprinkler system, comprising a. an elongated pipe assembly supported above ground on spaced wheels, b. a plurality of sprinkler heads spaced apart along the pipe assembly and disposed alternately in opposite directions, and c. valve means associated with each sprinkler head and operable automatically to open to water under pressure in the pipe assembly those heads extending upwardly from the pipe assembly and to close to water under pressure in the pipe assembly those heads extending downwardly from the pipe assembly.
Claim 3
Dependent Claim
46 words
The irrigation sprinkler system of claim 1 wherein the valve means also is operable upon relief of water pressure in the pipe assembly to open to the pipe those heads extending downwardly from the pipe assembly, whereby to utilize said heads to drain the pipe assembly.
Claim 4
Dependent Claim
76 words
The irrigation sprinkler system of claim 1 wherein the valve means comprises a. a hollow housing extending into thb irrigation pipe and communicating the sprinkler head with the interior of the pipe, b. a valve port member in the housing having a valve seat facing the end of the housing within the pipe, and c. a ball valve member movable in the housing between the valve seat and the end of the housing within the pipe.
Claim 5
Dependent Claim
47 words
The irrigation sprinkler system of claim 3 including resilient means adjacent the valve seat engageable by the ball valve and normally urging the latter away from the valve seat, but allowing seating of the ball valve under the influence of water under pressure in the irrigation pipe.
Claim 6
Dependent Claim
23 words
The irrigation sprinkler system of claim 4 wherein the resilient means comprises a resilient O-ring extending across diametrically opposed slots in the housing.
Claim 7
Dependent Claim
39 words
The irrigation sprinkler system of claim 3 including a sleeve member supporting the housing at one end thereof and removably mounting a sprinkler head at the opposite end thereof, the sleeve member being connected removably to the irrigation pipe.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |