US3335959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn sprinkler
Assignee: Ris Irrigation Systems
•
Filing: 1965-04-30
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Granted: 1967-08-15
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Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 George H Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:14
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/70; B05B15/72; B05B15/74; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7797; Y10T137/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN IRRIGATION SPRINKLER COMPRISING AN ENCLOSED STATIONARY COMPARTMENT, FLUID SUPPLY CONNECTION TO SAID COMPARTMENT, A RAM SLIDABLY MOUNTED IN AND PROJECTING FROM, SAID STATIONARY COMPARTMENT, SAID RAM BEING SO SHAPED AS TO FORM AN ENCLOSED CHAMBER WITHIN SAID RAM, SAID ENCLOSED CHAMBER BEING FILLED WITH A MATERIAL FOR THE PURPOSE OF INCREASING THE EFFECTIVE WEIGHT OF SAID RAM, RESILIENT GUIDES PERMITTING LONGITUDINAL MOVEMENT OF SAID RAM TELESCOPICALLY FROM AND INTO SAID STATIONARY COMPARTMENT, A PASSAGE THROUGH SAID RAM PERMITTING A
Claim 2
Dependent Claim
80 words
AN IRRIGATION SPRINKLER COMPRISING AN ENCLOSED STATIONARY COMPARTMENT, FLUID SUPPLY CONNECTION TO SAID COMPARTMENT, A RAM SLIDABLY MOUNTED IN AND PROJECTING FROM, SAID STATIONARY COMPARTMENT, SAID RAM BEING SO SHAPED AS TO FORM AN ENCLOSED CHAMBER WITHIN SAID RAM, SAID ENCLOSED CHAMBER BEING FILLED WITH A MATERIAL FOR THE PURPOSE OF INCREASING THE EFFECTIVE WEIGHT OF SAID RAM, RESILIENT GUIDES PERMITTING LONGITUDINAL MOVEMENT OF SAID RAM TELESCOPICALLY FROM AND INTO SAID STATIONARY COMPARTMENT, A PASSAGE THROUGH SAID RAM PERMITTING A
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |