Patents
US 8919678 B2: Filtration and cleaning system for sprinkler irrigation drop nozzles
- Granted
- 2014-12-30
- Filed
- 2009-08-10 application 12538291
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A filter for use with overhead sprinkler irrigation systems is disclosed. The filter includes a body, a removable screen, and a manually-actuated plunger adjacent the screen. A water hammer table is partitioned in the body and located above the plunger. The plunger is positioned for reciprocal movement through a debris outlet between an open, debris-discharging position, and a closed filtering position. The plunger defaults to the closed filtering position by pressurized water flowing through the body. The water is simultaneously filtered through the screen and passes out a clean water outlet while debris accumulates within the body. The plunger may be manually retracted to the open, debris-discharging position at any time, whereby accumulated debris is flushed out of the body through the debris outlet by residual water flowing therethrough.
Source: PVGPATDIS, file of 2026-04-10 (ipg141230.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| American Agriculture Products, LLC 2 patents | US company or organization | Guymon, OK | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gerald Beer | Guymon, OK | 2 | PVGPATDIS, file of 2026-04-10 | |
| Michael W. Freitas | Colleyville, TX | 19 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A01G | Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops or seaweed; forestry; watering | A01G25/023 | PVGPATDIS, file of 2026-04-10 |
| B05B | Spraying apparatus; atomising apparatus; nozzles | B05B15/40 | PVGPATDIS, file of 2026-04-10 |
| A62C | Fire-fighting | A62C35/68 | PVGPATDIS, file of 2026-04-10 |
| Y02A | Technologies for adaptation to climate change | Y02A40/22 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2009-08-10 | Assignment Assignment of assignor's interest | BEER, GERALD signed 2009-08-06 FREITAS, MICHAEL WOODFORD signed 2009-08-06 | AMERICAN AGRICULTURE PRODUCTS, LLC GUYMON, OK | 23083/703 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.