| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Scraper and grader. | US1901068378 | 1901-07-15 | US685350A | 1901-10-29 | SARGENT JACOB U |
| 42 | Improvement in harrows | US187447D | US187447A | 1877-02-13 | ||
| 43 | Improved drag and cultivator combined | US36892D | US36892A | 1862-11-11 | ||
| 44 | SOIL WORKING MACHINES INCLUDING HEIGHT AND PITCH TOOL ADJUSTABILITY | US15855306 | 2017-12-27 | US20180116097A1 | 2018-05-03 | Kevin V. Keigley |
| Unique self-propelled soil working machines are disclosed. In certain exemplary embodiments the self propelled soil working machine includes a tool carrier which is actively adjustable to provide variable downward force on a soil working tool via a suspension element which is further passively responsive to accommodate motion of the tool in response to external force. In certain exemplary embodiments, the tool carrier is configured to adjust the working depth and pitch of the tool. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures. | ||||||
| 45 | Soil working machines including height and pitch tool adjustability | US15075461 | 2016-03-21 | US09883621B2 | 2018-02-06 | Kevin V. Keigley |
| Unique self-propelled soil working machines are disclosed. In certain exemplary embodiments the self propelled soil working machine includes a tool carrier which is actively adjustable to provide variable downward force on a soil working tool via a suspension element which is further passively responsive to accommodate motion of the tool in response to external force. In certain exemplary embodiments, the tool carrier is configured to adjust the working depth and pitch of the tool. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures. | ||||||
| 46 | Prickle chain link | US11126406 | 2005-05-11 | US20050262823A1 | 2005-12-01 | Kentyn Paterson |
| A cast prickle chain link element, and a prickle chain made by interconnecting a plurality of these links. Each link element includes a body, the body having at least one hole, and at least one hook formed into it, and at least one ground engaging finger projecting outwardly from the body. The hook formed into the body of one element, is adapted to engage the hole formed into the body of another identical element, thereby facilitating the linking of elements in order to form a prickle chain. | ||||||
| 47 | Flex tine soil mulcher | US519294 | 1990-05-04 | US5044449A | 1991-09-03 | Louis Stirek; Bruce J. Steffens; Douglas B. Steffen |
| This invention relates to a flex tine soil mulcher comprised of a plurality of spaced parallel elongated support arms which extend in a lateral direction with respect to the travel of the device over a cultivated field. A plurality of elongated spaced soil-engaging tines are secured to each of the support arms and extend downwardly therefrom. An upstanding bracket arm is secured to each of the support arms with the bracket arms being in longitudinal alignment. First and second parallel connecting arms are pivotally secured to the bracket arms whereby the attitude of the tines with respect to a vertical plane can be adjusted by longitudinally moving one of the connecting arms with respect to the other. A stop means interconnects the connecting arms to prevent longitudinal movement of one connecting arm with respect to the other in first longitudinal direction, but permits free longitudinal movement between the connecting arms in an opposite longitudinal direction. | ||||||
| 48 | Chain harrows | US645185 | 1984-08-29 | US4582142A | 1986-04-15 | Ralph G. Bridge |
| A new chain harrow of improved performance with regard to effective harrowing and non-clogging is made up of V-shaped elements (as seen in plan) interlinked with the apex of one connected to the end of a respective arm of a more forward element. The elements are formed of unusually large diameter steel rod (e.g. about 16 mm instead of the prior thickness of about 11 mm) with relatively unusually large loops and with a horizontal apex loop that is an incomplete turn of about 270 degrees so as to provide for a specially effective sweeping and guiding action. Each arm is provided at its end with a respective tooth at the end of a respective vertical loop for interlinking with the horizontal loop of the forward element. These loops are all of at least about 5 cm radius; the longer arm terminates in a trailing tooth with a trailing angle of about 15 degrees to the vertical to provide for normal harrowing, while the shorter arm also terminates in a trailing tooth with an angle of about 45 degrees to the vertical so as to be more self-cleaning when that is required. The two arms are of different lengths so that the teeth of successive elements follow transversely-spaced paths. The two teeth point in opposite directions so that the harrow is double-sided with different tooth actions for the two sides. Such a harrow not only is more robust but avoids the difficulties experienced with prior harrows of "rear-end curl" at the speeds at which harrows are now employed. | ||||||
| 49 | Raking implement | US3739860D | 1971-05-10 | US3739860A | 1973-06-19 | ROGERS C |
| A multi-purpose raking implement, especially adapted for maintenance of golf course sand traps, automatically conforms to the topography of the terrain which is traverses by the use of a long, flexible strip to which the raking elements are attached. Such elements act as combs and slicers to break up, decrust, loosen, smooth and aerate the sand or soil, to gather debris and to destroy weeds that have begun to vegetate and grow.
|
||||||
| 50 | Flexible harrows | US3494428D | 1966-12-09 | US3494428A | 1970-02-10 | AITKENHEAD WILLIAM |
| 51 | Harrow | US39568853 | 1953-12-02 | US2881845A | 1959-04-14 | WILLIAM AITKENHEAD |
| 52 | Expanded metal harrow | US72321647 | 1947-01-21 | US2537538A | 1951-01-09 | MACK WAYNE E |
| 53 | Harrow | US27359528 | 1928-04-28 | US1757865A | 1930-05-06 | JENS JENSEN |
| 54 | Harrow | US26006928 | 1928-03-08 | US1749074A | 1930-03-04 | FREDERICK HILL JOHN |
| 55 | Flexible harrow | US24028127 | 1927-12-15 | US1712483A | 1929-05-14 | CAMPBELL SUTHERLAND ALEXANDER |
| 56 | Harrow | US3192525 | 1925-05-21 | US1624521A | 1927-04-12 | ARTHUR WALTER; WILHELM KUTTRUF |
| 57 | Harrow for eliminating quack-grass and the like | US32611819 | 1919-09-25 | US1350512A | 1920-08-24 | ALEXANDER MOWATT |
| 58 | Road-drag. | US13809116 | 1916-12-20 | US1233521A | 1917-07-17 | STEVENS EDWARD L |
| 59 | Hgssgs | US1193314D | US1193314A | 1916-08-01 | ||
| 60 | Road hone-scraper. | US1912682189 | 1912-03-07 | US1070381A | 1913-08-12 | AVERELL LORENZO CHARLES |
QQ群二维码
意见反馈
意见反馈