Abstract: A rotary feedthrough for a device to inflate and deflate a tire on a tractor wheel has a housing (13) with an inner member (28) arranged at a radial distance within the housing. The radial gap is bridged by two radially distanced closing elements (18, 22). The inner member (28) is supported in the closing elements (18, 22). Two seal combinations, including respectively, a first sealing ring (35) and a second sealing ring (41), are arranged mirror-invertedly to the inner member (28). The first sealing rings (35), with a first sealing face (36), abut a counter sealing face (21) or (25) of the closing elements (18, 22), respectively. Each first sealing ring (35) can be moved axially along the longitudinal axis Y. Each first sealing ring (36) is fixed rotationally to the inner member (28). Each first sealing ring (35) is acted upon by a second sealing ring (41).

Abstract: A rotary feedthrough for a device to inflate and deflate a tire on a tractor wheel has a housing (13) with an inner member (28) arranged at a radial distance within the housing. The radial gap is bridged by two radially distanced closing elements (18, 22). The inner member (28) is supported in the closing elements (18, 22). Two seal combinations, including respectively, a first sealing ring (35) and a second sealing ring (41), are arranged mirror-invertedly to the inner member (28). The first sealing rings (35), with a first sealing face (36), abut a counter sealing face (21) or (25) of the closing elements (18, 22), respectively. Each first sealing ring (35) can be moved axially along the longitudinal axis Y. Each first sealing ring (36) is fixed rotationally to the inner member (28). Each first sealing ring (35) is acted upon by a second sealing ring (41).

Abstract: A wheel 1 for a tractor has a wheel rim 2 and a wheel center member 3 to connect to a wheel flange of the tractor. Furthermore, a device 8 is provided to fill or deflate a tire mounted on the wheel 1. This device has a housing 14 fixed to the wheel center member 3. The housing 14 rotates with the center member. An inner member 21 is supported in this housing 14. An annular chamber 25 is formed between the two. The annular chamber 25 is formed between the two. The annular chamber 25 is connected, via a pipe 12, to a first connecting port 10, on the wheel rim 2, and to a second connecting port 11, coupled with a valve 9. Furthermore, the annular chamber 25 is connectable, via a third connecting port 29 and via a main valve 30, to a compressed air generator or compressor.

Abstract: A device to fill or deflate a tire of a vehicle, such as a tractor, is arranged on the wheel rim of a wheel. The device includes a housing 14 with a second connecting port 11 to connect to a first connecting port 10. An inner member 21 is supported in the housing 14. The inner member 21 and housing 14 are both rotatable relative towards each other. The inner member 21 has a third connecting port 29 to connect to a connection 31, 32, which leads to the pressure supply. A control valve 9 is provided and coupled with the second connecting port. An annular chamber 25 is connected to the second connecting port 11 and the third connecting port 29. The annular chamber 25 is formed between the housing and the inner member 21. Two seals 26 are provided between the housing 14 and the inner member 21. The seal 26 laterally closes off the annular chamber 25.

Abstract: A wheel 1 for a tractor has a wheel rim 2 and a wheel center member 3 to connect to a wheel flange of the tractor. Furthermore, a device 8 is provided to fill or deflate a tire mounted on the wheel 1. This device has a housing 14 fixed to the wheel center member 3. The housing 14 rotates with the center member. An inner member 21 is supported in this housing 14. An annular chamber 25 is formed between the two. The annular chamber 25 is formed between the two. The annular chamber 25 is connected, via a pipe 12, to a first connecting port 10, on the wheel rim 2, and to a second connecting port 11, coupled with a valve 9. Furthermore, the annular chamber 25 is connectable, via a third connecting port 29 and via a main valve 30, to a compressed air generator or compressor.

Abstract: A device to fill or deflate a tire of a vehicle, such as a tractor, is arranged on the wheel rim of a wheel. The device includes a housing 14 with a second connecting port 11 to connect to a first connecting port 10. An inner member 21 is supported in the housing 14. The inner member 21 and housing 14 are both rotatable relative towards each other. The inner member 21 has a third connecting port 29 to connect to a connection 31, 32, which leads to the pressure supply. A control valve 9 is provided and coupled with the second connecting port. An annular chamber 25 is connected to the second connecting port 11 and the third connecting port 29. The annular chamber 25 is formed between the housing and the inner member 21. Two seals 26 are provided between the housing 14 and the inner member 21. The seal 26 laterally closes off the annular chamber 25.

Abstract: A protective device for a drive assembly with a double universal joint (1) has a protective cone (10) with folds (15). At the cone's first axial end (11), it is secured to a bearing assembly (12). At its second axial end, the cone (10) includes a fixing portion (14) which is connected to a guiding ring (18). The guiding ring (18), via its inner end (21) projects into the part of the protective cone (10) which is provided with the folds. The guiding ring (18) itself is supported on a bearing ring (23). The bearing ring (23), in turn, is supported on an inner double yoke (5). An axial relative movement is permitted between the guiding ring (18) and the bearing ring (23). The guiding ring (18) ensures that the protective cone (10), with the folds (15), is well supported under articulation conditions. Furthermore, the protective cone (10) with its folds (15) has a relatively long length without losing any of its stability.

Abstract: A driveshaft has two shaft parts (4, 6) which provide a coupling. To facilitate the operation of coupling the two shaft parts (4, 6) to one another, the coupling operation is divided into two phases. A member initially aligns the two shaft parts (4, 6) along a common longitudinal axis (13). Also, the shafts are rotationally fast connected between the shaft parts. A centering journal (20) centers the two shaft parts (4, 6) relative to one another on a common longitudinal axis (13). The centering journal centers the bore (16) of the first profiled tube (12) with a relative rotation of the two shaft parts (4, 6) continuing to be possible. When inserting the two shaft parts (4, 6) into one another, the first coupling part (19), which is firmly connected to the first profiled tube (12), via its claws approaches the claws of the second coupling part (40). The second coupling part (40) is displaceable on the second profiled tube (28) via a setting sleeve (34) against the force of a spring (38).

Abstract: A torque limiting coupling (5) for a driveline driving agricultural implements has driving members (16) which, with reference to the rotational axis (15), are displaced inwardly from a torque transmitting position into a disconnected position. If overloading occurs, the driving members (16) are automatically moved to re-engage a groove (45) in the coupling sleeve (42) if the positions of the driving members (16) and the torque transmitting faces correspond to one another. Also, a switching ring (22) loads the driving members (16) with centrifugal segments (36') which, in the case of overloading, are released by the switching ring (22), thus preventing the latter and in consequence the driving members (16) from assuming the torque transmitting position as long as a predetermined limit speed is still exceeded. This measure ensures that the wear at the driving members and torque transmitting faces of the coupling sleeve is reduced.

Abstract: A protective device for telescopic driveshafts used in driving agricultural implements has two protective tubes (8, 9) which are axially inserted into, and overlap, one another. The tubes (8, 9) are adjustable relative to one another along their longitudinal axis (5) and are made of plastics. The outer protective tube (8) includes three circumferentially distributed pairs of ribs ( 13, 14). The ribs (13, 14) are arranged at a distance from one another and a groove (11) is formed between the ribs (13, 14). Guiding webs (15) are provided between pairs of ribs ( 13, 14). The webs (15) project inwardly towards the longitudinal axis (5) from the inner face (12) of the outer protective tube (8). The webs (15) also project inwardly towards the longitudinal axis (5) and serve to center and radially support the tube (9). The outer face of the outer protective tube has a smooth finish. Thus, there are no projections which may possibly injure the operative when unintentionally rotating the protective device.

Abstract: A length adjusting mechanism for a driveshaft has two tubular profiles, an outer profile (6) and an inner profile (7). The outer profile (6) includes two circumferentially offset drawn in wedges (8) which project inwardly beyond the inner face of the otherwise circular cross-section of the outer profile (6). The wedges (8) engage grooves (11) of an inner profile (7). The grooves (11) are also drawn in. In this way it is possible to produce a pair of profiles which are suitable to transmit high torques and which, furthermore, do not include any parts which project in a radially outward direction.

Abstract: A sealing assembly for the arms (6) of a cross member (5) of a universal joint has a seal (16) with a fixing portion (17) including a bore (18) which rests on the arm (6). In the region of its bore (18), the fixing portion (17) includes axially extending grooves (19) which open towards the bearing interior and the second end face (22) of the fixing portion (17), respectively. Towards the outside, the grooves are closed by a sealing lip (25). The sealing lips (30, 31), which have a sealing effect relative to the sealing face (32) of the bearing bush (7), are arranged at annular portions (28, 29). The sealing lip (30) closes under the pressure of lubrication. During the lubricating process, the lubricant is able to escape outwardly through the grooves (19) and the gap between the lifted sealing lip (25) and the annular shoulder (24).

Abstract: A coupling having a coupling hub and a rotatably received coupling sleeve. Locking catches (19)are arranged between these two components to transmit torque. Supporting faces of the locking catches, in the torque transmitting position, are supported on corresponding supporting faces of the coupling hub and coupling sleeve. The locking catches are held in the torque transmitting position by switching rings which, via switching faces, act on corresponding switching faces at the ends of the locking catches. In the case of overloading, the switching ring is axially adjusted against the force of a spring and releases the coupling towards the disengaged position. The coupling slides inwardly as a result of the relative movement on the inclined supporting faces of the coupling sleeve.

Abstract: An assembly consisting of two bevel gear angular drives which are pivotably connected to each other via a pivot bearing, the bearing system including two bevel roller bearings which are tensioned relative to each other between the two sleeves. The shaft carrying the two bevel gears is also supported via bevel roller bearings in the sleeves. In this way it is possible to obtain an assembly which is suitable for implements which transmit high tensile forces to the assembly, without the bearing system and the rotary function of the two drives being adversely affected.

Abstract: During monitoring of the driveline of an agricultural implement in respect of overloading and the degree of loading, from a first occurrence of slip, the slip revolutions occurring during a measuring cycle are added up. If the number of slip revolutions exceeds a permissible number of slip revolutions, a signal is generated indicating an overloading condition, a new measuring cycle beginning upon release of the signal to be able to take into account the effects resulting from a change in the behavior of the tractor driver, the nature of the signal being changed responsive to the speed differential between the input speed and output speed of a friction coupling permitting relative rotation.

Abstract: A coupling device for connecting the power take off means of an agricultural tractor to a driven shaft of an implement includes an upper guide member 20 connected between the tractor and the implement from which the drive shaft 16 is resiliently supported by the springs 42. The guide member 20 is telescopic and is lockable, when the tractor is coupled to the implement, by means of a lever arm 40 to which the springs 42 are connected. In the coupled condition the lever arm is retracted thereby releasing the drive shaft 16 from the resilient bias of the springs 42 and thereby releasing the drive shaft bearings from any spring loading during operation.

Abstract: A clutch mechanism designed to include a free-wheeling unit which is disengageable in the driving direction consisting of a clutch hub and a clutch sleeve which cooperate with locking catches, with the clutch sleeve being embraced by a control ring. Control pins are radially guided in the clutch sleeve and, by turning the control ring relative to the clutch sleeve, inclined faces formed on the control ring act on the control pins to actuate the locking catches to permit disengagement of the driving connection.

Abstract: A clutch assembly capable of providing several predetermined settings, wherein the components which support springs applying torque are not subjected to bending loads. The settings are achieved in that a supporting ring supporting a pressure plate against a clutch housing is provided with radially outwardly extending cams which are offset relative to the center thereof with two rows of apertures being provided in a cylindrical face of the clutch housing which are axially offset and offset relative to the angle of rotation and which correspond to the cams of the supporting ring and within which the cams are engaged.

Abstract: A shaft connecting mechanism is provided between a slip-on hub and a power takeoff shaft by means of a control ring which extends around the slip-on hub and which is formed to have a pressure screw extend through a threaded bore therein, the pressure screw engaging against a clamping wedge in the slip-on hub which is formed with a trapezoidal configuration generally conforming with the configuration of an axiallly extending groove formed in the slip-on hub. Blocking members are arranged in radial apertures in the slip-on hub and pockets are formed in the control ring. The pressure screw when angularly aligned with the clamping wedge, places the control ring in the locked position and when the pressure screw and the clamping wedge are angularly unaligned, the blocking members enter the pockets in the control ring.

Abstract: A telescopic shaft assembly for torque transmission in agricultural implements includes a first and a second profiled shaft arranged in torque transmitting engagement with each other with a pair of telescopic tubular tie anchors being releasably attached one with each of the profiled shafts, the tie anchors being joined together so as to be length adjustable relatively nonrotatable by a connecting mechanism which includes a pair of axially extending slots formed in one of the tie anchors and a transversely extending bolt formed in the other which is engageable within the slots, each of the tie anchors being attached, respectively, to one of the profiled shafts by spring actuated releasable engaging devices with the engaging device connecting the innermost of the two tubular tie anchors with one of the profiled shafts enabling disengagement thereof with a lower disengaging force than the other of the engaging devices.