Patent US3648935A successfully refreshed from Google Patents.
US3648935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray apparatus with movable head
Assignee: Rhone Poulenc Nederland BV
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Filing: 1970-02-04
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Granted: 1972-03-14
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Expires: 1990-02-04
Abstract
Abstract A spray apparatus for applying agricultural liquids, the apparatus including an oscillating or otherwise moving spray head which has many projecting fingers that are pointed at their free ends in the preferred embodiment, the spray head being generally horizontally disposed, with the liquid material being supplied onto the spray head wherein the liquid is projected by centrifugal force onto the projecting fingers and then discharged therefrom in large drops of a substantially uniform size to give a very uniform spray pattern.
Inventors
- 👤 John E Waldrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:58
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0025; A01M7/0032; A01M7/0035; A01C; A01C23/00; A01C23/006
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A spray apparatus comprising a spray disc generally disposed in a horizontal plane and movable about a generally vertical axis and oscillating drive means to oscillate said spray disc about said axis, said spray disc having a central depressed portion and a plurality of pointed discharge fingers extending outwardly thereof, feed means to deliver a liquid to said central depressed portion, with the oscillation of said spray disc about said axis being of a variable speed and direction to cause said liquid to be carried out of said central depressed portion and onto said fingers to be discharged therefrom.
Claim 2
Dependent Claim
99 words
A spray apparatus comprising a spray disc generally disposed in a horizontal plane and movable about a generally vertical axis and oscillating drive means to oscillate said spray disc about said axis, said spray disc having a central depressed portion and a plurality of pointed discharge fingers extending outwardly thereof, feed means to deliver a liquid to said central depressed portion, with the oscillation of said spray disc about said axis being of a variable speed and direction to cause said liquid to be carried out of said central depressed portion and onto said fingers to be discharged therefrom.
Claim 3
Dependent Claim
39 words
The spray apparatus of claim 1 including a handle extending from said frame, releasable cable means extending through said handle to valve means adapted to be actuated thereby to prevent further flow of said liquid through said feed means.
Claim 4
Dependent Claim
24 words
The spray apparatus of claim 1 wherein oscillating drive means causes said spray disc to be rotated in an arc from 10* to 180*.
Claim 5
Dependent Claim
14 words
The spray apparatus of claim 3 wherein said fingers terminate outwardly in sharp points.
Claim 6
Dependent Claim
32 words
The spray apparatus of claim 3 wherein said feed means include a tank mounted on said frame, with a feed tube extending from said tank to a point adjacent said spray disc.
Claim 7
Dependent Claim
23 words
The spray apparatus of claim 3 wherein said disc includes a central shaft, with said feed means delivering liquid adjacent said central shaft.
Claim 8
Dependent Claim
30 words
The spray apparatus of claim 6 including a frame, said spray disc and feed means being secured upon said frame, with said frame having an opening to receive said shaft.
Claim 9
Dependent Claim
26 words
The spray apparatus of claim 7 wherein said opening includes a slot to permit liquid delivered by said feed means to travel to said spray disc.
Claim 10
Dependent Claim
32 words
The spray apparatus of claim 7 including a ground engaging wheel revolvably held by said frame, said wheel being operatively connected to said drive means in order to move said spray disc.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |