US3807643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material agitator for a spreader
Assignee: True Temper Hardware Co
•
Filing: 1972-11-27
•
Granted: 1974-04-30
•
Expires: 1992-11-27
Abstract
Abstract An agitator for use in a fluent material spreader which includes a hopper having a bottom with a discharge opening therein and a rotatable shaft extending upwardly through the hopper bottom. The agitator is of a flat configuration which is connected to the shaft within the hopper for rotative movement therewith. The agitator is positioned so as to generally parallel the bottom of the hopper and has an opening formed therein which is positioned so as to pass over the discharge opening in the hopper during each revolution of the shaft.
Inventors
- 👤 P Bowerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/02; A01C15/00; A01C15/005; A01C15/006; A01C15/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
In a spreader for fluent material, said spreader including a hopper, said hopper including a bottom having a discharge opening therein, a rotatable shaft extending upwardly through said bottom into said hopper, an agitator comprising a flat blade having a peripheral edge and opening means located entirely within said peripheral edge to accommodate the passage of said material through said blade, securement means carried by said blade and connecting said blade to said shaft within said hopper in a position generally paralleling said hopper bottom for rotative movement with said shaft, said blade projecting laterally from said shaft, said opening means being laterally spaced from said shaft and positioned relative to said shaft and said discharge opening so as to pass over said discharge opening at least once during each revolution of said shaft.
Claim 2
Dependent Claim
134 words
In a spreader for fluent material, said spreader including a hopper, said hopper including a bottom having a discharge opening therein, a rotatable shaft extending upwardly through said bottom into said hopper, an agitator comprising a flat blade having a peripheral edge and opening means located entirely within said peripheral edge to accommodate the passage of said material through said blade, securement means carried by said blade and connecting said blade to said shaft within said hopper in a position generally paralleling said hopper bottom for rotative movement with said shaft, said blade projecting laterally from said shaft, said opening means being laterally spaced from said shaft and positioned relative to said shaft and said discharge opening so as to pass over said discharge opening at least once during each revolution of said shaft.
Claim 3
Dependent Claim
12 words
The agitator of claim 1 wherein said peripheral edge is continuously arcuate.
Claim 4
Dependent Claim
11 words
The agitator of claim 1 wherein said peripheral edge is oval.
Claim 5
Dependent Claim
36 words
The agitator of claim 1 wherein said opening means is of an oval shape and has an area of at least one-fourth of the over all area of said blade as defined by said peripheral edge.
Claim 6
Dependent Claim
96 words
The agitator of claim 1 wherein said securement means includes a tab flexibly connected at one edge to said blade part and bent thereover, said tab being normally angled relative to said blade part, said tab and blade part having openings therein, said tab and blade part openings being aligned to receive said shaft when said tab is flexed to generally parallel said blade part, said tab and blade part openings being misaligned to cause said tab and blade part to lockingly engage said shaft when said tab is so angled relative to said blade part.
Claim 7
Dependent Claim
26 words
The agitator of claim 1 wherein said tab and blade openings are non-circular, said shaft being complemental in cross section to said tab and blade openings.
Claim 8
Dependent Claim
15 words
The agitator of claim 5 wherein said tab is laterally spaced from said opening means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |