Patent US3765156A successfully refreshed from Google Patents.
US3765156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turtle grass harvester
Assignee: Individual
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Filing: 1970-12-10
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Granted: 1973-10-16
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Expires: 1990-12-10
Abstract
Abstract Underwater marine harvester for turtle grass and the like having a transverse member mounted on the deck of a vessel and extending beyond the sides of the vessel with an upright at each end, a frame of a width approximately the spacing between said uprights, parallelogram pull linkages including the uprights and frame for drawing the frame through the water, a sickle bar cutter disposed across the bottom of said frame and facing toward the transverse member, power means for actuating said cutter, means for raising and lowering the frame, a plurality of shoes pivotally attached to the frame and disposed behind the cutter, power means for setting the angle of said shoes, and a transverse wing extending across and pivoted to the frame, and power means for setting the angle of the wing.
Inventors
- 👤 W Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:44
CPC Classifications
A; A01; A01D; A01D44/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
Harvesting apparatus for cutting vegetation growing from the bottom of a body of water, said apparatus comprising, in combination: a. float means movable across the surface of the water; b. frame means supported on said float means for movement between elevated and lowered positions; c. a substantially horizontal sickle bar cutter supported at the lowermost portion of said frame means for movement therewith and transversely disposed with respect to the direction of movement of said float means; d. shoe means attached to said frame rearwardly adjacent said cutter; e. extensible and retractable actuator means attached between said frame and said shoe means to selectively adjust the vertical distance between the lower side of said shoe means and said lowermost portion of said frame, and thereby said cutter; and f. means operable from the top of said float means for selectively extending and retracting said actuator means.
Claim 2
Dependent Claim
146 words
Harvesting apparatus for cutting vegetation growing from the bottom of a body of water, said apparatus comprising, in combination: a. float means movable across the surface of the water; b. frame means supported on said float means for movement between elevated and lowered positions; c. a substantially horizontal sickle bar cutter supported at the lowermost portion of said frame means for movement therewith and transversely disposed with respect to the direction of movement of said float means; d. shoe means attached to said frame rearwardly adjacent said cutter; e. extensible and retractable actuator means attached between said frame and said shoe means to selectively adjust the vertical distance between the lower side of said shoe means and said lowermost portion of said frame, and thereby said cutter; and f. means operable from the top of said float means for selectively extending and retracting said actuator means.
Claim 3
Dependent Claim
61 words
The invention according to claim 1 wherein said shoe means are fixedly attached to a rod extending across said lowermost portion of said frame means, said shoe means extend rearwardly from and said cutter is mounted forwardly of and substantially parallel to said rod, and said actuator means are operable to rotate said shoe means about an axis through said rod.
Claim 4
Dependent Claim
60 words
The invention according to claim 1 and further including adjustable wing means having a hydrofoil surface for engaging the water, in at least said lowered position of said frame means, as said float means is moved thereacross to exert a force on said frame means tending to raise or lower the same, depending on the adjustment of said wing means.
Claim 5
Dependent Claim
26 words
The invention according to claim 3 and further including second actuator means operable from the top of said float means for selectively adjusting said wing means.
Claim 6
Dependent Claim
64 words
The invention according to claim 1 wherein said frame means includes a first support member upon which said cutter and said shoe means are supported, and upper and lower second support members extending parallel to one another from pivotal attachments to said first support member, said upper second support member being of fixed length and said lower second support member being of variaBle length.
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |