公开(公告)号：US5476150A

公开(公告)日：1995-12-19

申请号：US286318

申请日：1994-07-08

Applicant: Joseph C. Hurlburt ,  Angelo Rondelli ,  Guido A. LaVecchia

Inventor： Joseph C. Hurlburt ,  Angelo Rondelli ,  Guido A. LaVecchia

IPC: A01B71/06 ,  B62D7/06 ,  B62D9/00 ,  B60K25/02

CPC classification number: B62D7/06 ,  A01B71/06 ,  B62D9/00

Abstract: A power-takeoff apparatus for use on a compact tractor equipped with a compound steering mechanism is disclosed wherein the chassis includes a front chassis member having an opening formed therein to allow the passage of a power-takeoff shaft therethrough for connection to a front-mounted implement mounted to the steerable axle for lateral movement therewith. The opening in the front chassis member having a sufficient transverse width to accommodate the lateral swinging movement of the power-takeoff shaft in unison with the movement of the front-mounted implement. The front chassis member is also adapted for mounting a front-mounted implement thereto for providing an alternative mounting thereof so that the implement will not move with the steerable axle.

Abstract translation: 公开了一种用于配备有复合转向机构的紧凑型拖拉机的动力输出装置，其中底盘包括前底盘构件，其具有形成在其中的开口，以允许动力输出轴通过其中以连接到前挂式 工具安装到可转向轴上以与其一起横向移动。 前底盘构件中的开口具有足够的横向宽度，以适应动力输出轴的横向摆动运动，与前置式工具的移动一致。 前底盘构件还适于将前置的工具安装在其上以提供其替代的安装，使得工具不会与可转向的轴一起移动。

公开(公告)号：US4957016A

公开(公告)日：1990-09-18

申请号：US497832

申请日：1990-03-22

Applicant: Giuseppe Amedei ,  Angelo Rondelli

Inventor： Giuseppe Amedei ,  Angelo Rondelli

IPC: F16H3/00 ,  F16H37/04 ,  F16H61/02 ,  F16H63/30

CPC classification number: F16H61/688 ,  F16H3/006 ,  F16H37/043 ,  F16H61/0248 ,  F16H2200/0052 ,  F16H2306/00 ,  F16H63/3026 ,  Y10T74/19251 ,  Y10T74/1926 ,  Y10T74/19288

Abstract: A transmission for an agricultural tractor featuring a large number of gears and comprising a first six-gear stage and a second reverse-reduction stage having three forward and one reverse speed ranges. The first stage comprises a pair of drive shafts selectively connectable to an input shaft via respective hydraulic clutches and to an output shaft via constant mesh gears respectively defining the odd and even number gears and engaging the output shaft via sliding couplings controlled by three-position hydraulic actuators. The actuators are operated by respective pairs of on-off solenoid valves supplied via a proportional-response solenoid valve, further proportional-response solenoid valves controlling engagement and release of the aforementioned clutches. All the aforementioned solenoid valves are controlled by an electronic control unit for appropriately controlling engagement of the clutches and actuators as a function of the actual service conditions of the tractor.

公开(公告)号：US5020419A

公开(公告)日：1991-06-04

申请号：US359374

申请日：1989-05-31

Applicant: Giuseppe Amedei ,  Angelo Rondelli

Inventor： Giuseppe Amedei ,  Angelo Rondelli

IPC: F15B11/12 ,  F16D25/08 ,  F16D25/10 ,  F16D25/12 ,  F16H59/68 ,  F16H61/30

CPC classification number: F16D25/12 ,  F15B11/123 ,  F16D25/088 ,  F16D25/10 ,  F16H61/30 ,  F16H2059/6807 ,  F16H2061/307

Abstract: A three-position hydraulic actuator comprising an outer body defining a cylindrical inner cavity; a dual-rod piston sliding inside the cavity; a pair of stop rings mounted in respective central annular seats in the lateral wall of the cavity and on the piston; and a pair of bushes sliding in sealed manner between the piston and the lateral wall of the cavity and located on axially opposite sides in relation to the stop rings.

公开(公告)号：US5142927A

公开(公告)日：1992-09-01

申请号：US613067

申请日：1990-11-15

Applicant: Giuseppe Amedei ,  Angelo Rondelli

Inventor： Giuseppe Amedei ,  Angelo Rondelli

IPC: F16H61/30

CPC classification number: F16H61/30 ,  F16H2061/301 ,  Y10T74/19251 ,  Y10T74/20024 ,  Y10T74/20159

Abstract: The device comprises a lever movable by the operator between at least two working positions and a neutral position to achieve, by means of an hydraulic actuator of double acting follower type, of the gear ratios in one stage of the gear box. The actuator comprises a piston slidable between two working positions and one neutral position to actuate engagement means and defining two chambers; and a shaft connected to the lever by means of a motion transfer unit and shaped as an hydraulic distributor in such a way that in the neutral position of the lever the chambers are connected to a discharge opening so as to determine the neutral position of the piston, and in a manner and in an operative position the stroke of the shaft causes communication of one chamber with the opening and of the other with an inlet opening for a fluid under pressure such that the pressure will translate the piston in the same direction and with the same stroke as the shaft. (FIG. 4).

Abstract translation: 该装置包括可由操作者在至少两个工作位置和中间位置之间移动的杠杆，以通过双作用从动器类型的液压致动器在齿轮箱的一级中实现齿轮比。 致动器包括可在两个工作位置和一个中间位置之间滑动以致动接合装置并限定两个室的活塞; 以及通过运动传递单元连接到杠杆的轴，并​​且形成为液压分配器，使得在杠杆的中间位置，这些室连接到排出口，以便确定活塞的中间位置 并且在一种方式和操作位置中，轴的行程使得一个腔室与开口和另一个腔室的连通具有用于压力下的流体的入口开口，使得压力将使活塞沿相同方向平移并且与 与轴相同的行程。 （图4）。

公开(公告)号：US5099943A

公开(公告)日：1992-03-31

申请号：US619954

申请日：1990-11-30

Applicant: Ivano Resca ,  Angelo Rondelli

Inventor： Ivano Resca ,  Angelo Rondelli

IPC: B60K17/35 ,  B60K23/08

CPC classification number: B60K17/35 ,  B60K23/08 ,  Y10T464/20

Abstract: The device engages the four wheel drive transmission of a vehicle which comprises two transmission shafts for the rear wheels and the front wheels, a clutch installed along a front shaft and adapted, if engaged, to couple the shafts for rotation together, and a drive transmission geometry such that mechanically, with the clutch engaged, the mechanical transmission causes the front wheels to be driven slightly faster than the rear wheels. The device includes two coupling halves adapted to connect two portions of the front shaft mechanically with the possibility of relative rotation, an element adapted to translate between two end positions corresponding to positive and negative relative rotation between the coupling halves, a sensor for detecting the movement of the element, and an electric central control unit to which the sensor is connected and adapted to control engagement or disengagement of the clutch automatically.