Patent US4069982A successfully refreshed from Google Patents.
US4069982A
Expired / Lapsed
US
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Engaging and distributing paddle for a manure spreader
Assignee: Unisys Corp
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Filing: 1976-11-18
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Granted: 1978-01-24
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Expires: 1996-11-18
Abstract
Abstract An improved paddle design for use on the beater mechanism of a manure spreader enables the spreader to satisfactoriloy handle a broader range of manure consistencies and to distribute the same over a more uniform and wide spread pattern. The paddle has a dished or cupped shape, is substantially symmetrical about its centerline, and includes a curved main body portion and integrally formed upper engaging and lower mounting portions. The upper portion has a curved shape similar to the main body portion and is inclined inwardly toward the axis of curvature of the main body portion, thus providing a concave working surface. The lower portion presents a planar surface for mounting the paddle on a beater shaft. The paddle, being symmetrical, can be used on either the left or right sides of a spreader.
Inventors
- 👤 Warren H. Brackbill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:05
CPC Classifications
A; A01; A01C; A01C3/00; A01C3/06; A01C3/066
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A material engaging and distributing paddle, comprising an inwardly curved main body portion and an inwardly curved upper peripheral edge portion integrally formed with the main body portion and curved inwardly along the same axis of curvature as said main body portion, said upper edge portion further being inclined toward said axis of curvature of said main body portion, said paddle having a centerline about which said main body and upper edge portions are substantially symmetrical.
Claim 2
Dependent Claim
76 words
A material engaging and distributing paddle, comprising an inwardly curved main body portion and an inwardly curved upper peripheral edge portion integrally formed with the main body portion and curved inwardly along the same axis of curvature as said main body portion, said upper edge portion further being inclined toward said axis of curvature of said main body portion, said paddle having a centerline about which said main body and upper edge portions are substantially symmetrical.
Claim 3
Dependent Claim
23 words
The paddle as described in claim 1, wherein the upper peripheral edge portion and the main body portion are of substantially equal curvatures.
Claim 4
Dependent Claim
15 words
The paddle as described in claim 1, wherein the upper peripheral edge portion is notched.
Claim 5
Dependent Claim
81 words
A material engaging and distributing paddle comprising a curved main body portion having a first predetermined radius of curvature, a curved upper edge portion having a second predetermined radius of curvature and integrally formed with the main body portion, and a lower planar generally rectangular shaped mounting portion integrally formed with the main body portion for detachably mounting said paddle on a mounting shaft, said upper edge portion being inclined inwardly toward the axis of curvature of said main body portion.
Claim 6
Dependent Claim
81 words
A material engaging and distributing paddle comprising a curved main body portion having a first predetermined radius of curvature, a curved upper edge portion having a second predetermined radius of curvature and integrally formed with the main body portion, and a lower planar generally rectangular shaped mounting portion integrally formed with the main body portion for detachably mounting said paddle on a mounting shaft, said upper edge portion being inclined inwardly toward the axis of curvature of said main body portion.
Claim 7
Dependent Claim
25 words
The paddle as described in claim 4, wherein the radius of curvature of the main body portion and the upper edge portion are substantially equal.
Claim 8
Dependent Claim
23 words
The paddle as described in claim 4, wherein the radius of curvature of said main body portion is between 16 and 20 inches.
Claim 9
Dependent Claim
28 words
The paddle as described in claim 4, wherein said lower mounting portion is substantially tangent to a perpendicular plane that bisects the paddle in generally two equal portions.
Claim 10
Dependent Claim
69 words
A symmetrically shaped material engaging and distributing paddle comprising a curved main body portion and an upper peripheral edge portion integrally formed with the main body portion and curved inwardly along the axis of curvature of said main body portion, said upper peripheral edge portion and said main body portion forming an arcuate shaped crease at their integral connection, said upper edge portion being inclined inwardly along said crease.
Claim 11
Dependent Claim
69 words
A symmetrically shaped material engaging and distributing paddle comprising a curved main body portion and an upper peripheral edge portion integrally formed with the main body portion and curved inwardly along the axis of curvature of said main body portion, said upper peripheral edge portion and said main body portion forming an arcuate shaped crease at their integral connection, said upper edge portion being inclined inwardly along said crease.
Claim 12
Dependent Claim
29 words
The paddle as described in claim 8, wherein the outer edge of said upper peripheral edge portion defines an arcuate shaped boundary generally parallel to said arcuate shaped crease.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |