Patent US3554478A successfully refreshed from Google Patents.
US3554478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding boom for sprayer
Assignee: Individual
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Filing: 1968-10-28
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Granted: 1971-01-12
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Expires: 1988-10-28
Abstract
Abstract A folding sprayer arm having a unique mechanism to fold the arm and position it behind the sprayer by a single manual control. An arrangement of pivots and arms contribute to the motion and a flexible support wound onto a quadrant helps to control the motion.
Inventors
- 👤 Henry L Sunderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:15
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/005; A01M7/0071; A01M7/0075
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
For a sprayer having a framework, a folding boom comprising an inner leg pivotally mounted on said framework, an outer leg pivotally connected to said inner leg near the outer end thereof, means for raising said outer end, the outer end of said outer leg being arranged to drop as said end of said inner leg is raised and means connected between said framework and said outer leg to control the dropping thereof including a quadrant on said outer leg and flexible means connected between said quadrant and said framework, said flexible means being adapted to become increasingly engaged with the periphery of said quadrant, said outer leg extending inwardly from the pivot point between it and said inner leg, the extension inward of said outer leg forming one radius of said quadrant.
Claim 2
Dependent Claim
133 words
For a sprayer having a framework, a folding boom comprising an inner leg pivotally mounted on said framework, an outer leg pivotally connected to said inner leg near the outer end thereof, means for raising said outer end, the outer end of said outer leg being arranged to drop as said end of said inner leg is raised and means connected between said framework and said outer leg to control the dropping thereof including a quadrant on said outer leg and flexible means connected between said quadrant and said framework, said flexible means being adapted to become increasingly engaged with the periphery of said quadrant, said outer leg extending inwardly from the pivot point between it and said inner leg, the extension inward of said outer leg forming one radius of said quadrant.
Claim 3
Dependent Claim
89 words
The device of claim 1 in which a brace member extends diagonally between said inner leg and said framework, said framework including a breakaway member pivotally mounted thereon, clip means on said framework adapted to hold said breakaway member releasably in a normal position, said brace being pivotally mounted on said breakaway member whereby movement of said leg in a direction which would normally increase tension in said brace will cause said clip means to release said breakaway member and allow said leg to pivot relative to said framework.
Claim 4
Dependent Claim
37 words
The device of claim 2 in which tension spring means is engaged between said breakaway member and said framework to pull said breakaway member back into holding engagement with said clip means upon release of the tension.
Claim 5
Dependent Claim
84 words
The device of claim 1 in which a diagonal brace member is pivotally attached to said inner leg and is pivotally attached to said framework, the line between the pivot of said inner leg and frame, and the pivot of said brace and said framework being not perpendicular to the normal position of said outer leg when said outer leg is extended whereby said brace pushes said outer leg and causes it to pivot about a vertical axis as said inner leg is raised.
Claim 6
Dependent Claim
39 words
The device of claim 4 in which spring means is engaged between said brace and said inner leg, said spring being biased by the raising of said inner leg so that said leg is urged in the opposite direction.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |