US3938249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler head cleaning device
Assignee: Individual
•
Filing: 1974-11-25
•
Granted: 1976-02-17
•
Expires: 1994-11-25
Abstract
Abstract A powered device is disclosed herein for removing soil, weeds or the like from the immediate area beneath a sprinkler head which includes a central shaft having a forward end engageable with the sprinkler head as a guide and a U-shaped member fixed on the shaft so as to rotate therewith. Each leg of the U-shaped member extends downwardly to clear the peripherial edge of the circular sprinkler head. A cutting blade is angularly secured to each end or leg of the U-shaped member so that a forward portion thereof extends underneath the sprinkler head and so that a rearward portion extends outwardly in a diverging relationship to the sprinkler head. Power drive is releasably coupled to the shaft for rotation of the cutting blades about the sprinkler head.
Inventors
- 👤 Rene Aragon Chacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
A; A01; A01G; A01G3/00; Y; Y10; Y10S; Y10S30/00; Y10S30/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
In combination with a water sprinkler head having a circular flange supported on a water supply pipe, a cleaning device comprising: a shaft; a U-shaped member secured to said shaft mid-way between the opposite ends of said shaft and having a pair of parallel legs downwardly depending from the opposite ends of a cross bar and said legs terminating below the underside of said flange; a pair of cutting blades secured to the respective terminating ends of said U-shaped member legs in an angularly upwardly diverging direction; stabilizing means for supporting and aligning said cutting blades with respect to said flange whereby said blades travel in a circular path above and beneath said flange; each of said cutting blades having a lower portion extending angularly downward with respect to said water supply pipe under said circular flange and having an upper portion extending upwardly in coextensive relationship with said lower portion; said cutting blades having opposing ends terminating in close proximity to the external surface of said water supply pipe; and power means detachably coupled to a selected end of said shaft for imparting powered rotational force thereto.
Claim 2
Dependent Claim
188 words
In combination with a water sprinkler head having a circular flange supported on a water supply pipe, a cleaning device comprising: a shaft; a U-shaped member secured to said shaft mid-way between the opposite ends of said shaft and having a pair of parallel legs downwardly depending from the opposite ends of a cross bar and said legs terminating below the underside of said flange; a pair of cutting blades secured to the respective terminating ends of said U-shaped member legs in an angularly upwardly diverging direction; stabilizing means for supporting and aligning said cutting blades with respect to said flange whereby said blades travel in a circular path above and beneath said flange; each of said cutting blades having a lower portion extending angularly downward with respect to said water supply pipe under said circular flange and having an upper portion extending upwardly in coextensive relationship with said lower portion; said cutting blades having opposing ends terminating in close proximity to the external surface of said water supply pipe; and power means detachably coupled to a selected end of said shaft for imparting powered rotational force thereto.
Claim 3
Dependent Claim
38 words
The invention as defined in claim 1 wherein each of said cutting blades includes an upper portion extending upwardly in a diverging manner from said water supply pipe and further extending over the surface of the surrounding ground.
Claim 4
Dependent Claim
36 words
The invention as defined in claim 2 wherein said shaft includes an end opposite to its end engaged with said power means for guiding and bearing said opposite end against the center of said sprinkler head.
Claim 5
Dependent Claim
30 words
The invention as defined in claim 3 including cutting edges provided on each of said cutting blades and said cutting edges facing in the direction of rotation of said shaft.
Claim 6
Dependent Claim
40 words
The invention as defined in claim 4 wherein the ends of said U-shaped member are joined to said pair of cutting blades at a location below said flange when said shaft is engaged against the center of said sprinkler head.
References Cited (Backward Citations)
US1746463A
Cited
US2723453A
Cited
US3143176A
Cited
US3548497A
Cited
US3747213A
Cited
US3747214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |