| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 281 | Beach-cleaning vehicle | US3596717D | 1969-09-29 | US3596717A | 1971-08-03 | KNUDSEN VALDEMAR |
| The vehicle is of the type adapted to move over the ground and by means of a scoop, elevator, shaker screen and receptacle, to separate large particles of the ground surface retrieved from smaller particles thereof, such as beach sand from trash contained therein, and to return the former to the ground or beach, while retaining the larger particles (trash) in the receptacle for transport elsewhere. The vehicle is equipped with an engine, for propulsion, from which power takeoffs operate hydraulic systems which in turn operate: a pivoted conveyor equipped with a ground scoop at its lower end, engaging the ground with a selective ground penetration; the conveyor feeding onto a powered shaker or separator screen, the screen serving to free and return to ground small particles passable through the mesh thereof, while retaining and passing into a bin the larger particles for discard or other usage; a bin, located adjacent the delivery end of said screen, the bin being mounted on the vehicle by raising and lowering arms. The vehicle is 4-wheel drive and steered by the rear wheels to reduce torque in the conveyor scoop in its ground engagement and to assist coverage of a complete area without gaps. The wheel arrangement further allows the shaker device to discharge to the rear of (and hence covering) the tracks made by the vehicle. All controls are trained forward to a single operator.
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| 282 | Blade mounting means for a multiple purpose blade | US24791162 | 1962-12-28 | US3160215A | 1964-12-08 | HARRELL WILL R |
| 283 | Apparatus for soil preparation | US42307554 | 1954-04-14 | US2785613A | 1957-03-19 | STAATS SR LOUIS T |
| 284 | Soil treating and weed destroying apparatus | US19857550 | 1950-12-01 | US2775174A | 1956-12-25 | EVERETT CHARLES H |
| 285 | Tractor drawn wheeled implement for destroying wild growth | US25956151 | 1951-12-03 | US2754736A | 1956-07-17 | LYNN PATRICK A |
| 286 | Stalk and root lifting and shredding device | US31211452 | 1952-09-29 | US2704919A | 1955-03-29 | BARNES JOHNEY H |
| 287 | Land conditioning machine | US69153546 | 1946-08-19 | US2630051A | 1953-03-03 | PATRICK PALMER CLARENCE |
| 288 | Weed destroyer | US59851632 | 1932-03-12 | US1954593A | 1934-04-10 | KULY PAUL J |
| 289 | Weed and foul seed destroying machine | US61005632 | 1932-05-09 | US1906127A | 1933-04-25 | REISHUS SONDRE S |
| 290 | Quack grass digger | US40572329 | 1929-11-08 | US1854261A | 1932-04-19 | IRWIN THOMAS J |
| 291 | Bermuda-grass-eradicating machine | US30977028 | 1928-10-02 | US1779027A | 1930-10-21 | BENJAMAN BAKER |
| 292 | Clod crusher and grass destroyer | US62461123 | 1923-03-12 | US1647717A | 1927-11-01 | PERRONE JOHN M |
| 293 | Soil pulverizer | US59081522 | 1922-09-27 | US1578859A | 1926-03-30 | STEPHEN SNIDER WILLIAM |
| 294 | Raking machine | US50946821 | 1921-10-22 | US1562405A | 1925-11-17 | AUGUST WOLFF |
| 295 | Grotjuj | US1468388D | US1468388A | 1923-09-18 | ||
| 296 | Weed and grass exterminating machine | US37207620 | 1920-04-07 | US1428032A | 1922-09-05 | HIRD JOHN P |
| 297 | Quack-grass digger | US50599621 | 1921-10-07 | US1417537A | 1922-05-30 | ROBERT LUCY |
| 298 | Sod cutting and disintegrating machine | US38026420 | 1920-05-10 | US1349926A | 1920-08-17 | THOMPSON ROBERT L |
| 299 | Quack-grass digger | US22667318 | 1918-04-04 | US1334255A | 1920-03-16 | MILLER JOHN B |
| 300 | Weed-destroyer | US22867918 | 1918-04-15 | US1329404A | 1920-02-03 | HILLMAN THEODORE H |
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