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 protective device for a driveshaft (1), with two universal joints (2, 3) has a protective cone (6) associated with the first universal joint. The protective cone (6) has an extension in the form of a cone portion (14). A sleeve (15) is received in a rotationally fast way in the cone portion (14). The sleeve (15) cooperates with an adapter ring (21). The adapter ring (21) is stationarily secured to an agricultural implement. The sleeve (15) is positioned on the adapter ring (21). The sleeve has inwardly directed splines which engage correspondingly distributed grooves (23) in the outer face of the adapter ring (21) which achieve a rotationally fast connection. The protective device also includes a first protective tube connected to the first protective cone (6). The first protective tube is associated with a second protective tube of the second universal joint in a rotationally fast way. The second tube is firmly connected to the second protective cone by an attaching cap.

Abstract: A torque limiting coupling (1) has a coupling sleeve (5), a coupling hub (2), and driving elements (12) settable between a torque transmitting position and a disconnected position. A switching ring (27) and loading balls (24) are provided which, in the torque transmitting position, load the driving elements (12) radially inwardly. If the driving elements (12) give way in their disconnected position, the balls (24) are pushed radially inwardly until the switching ring (27) is able to slide over the balls (24) and prevent them, via a bore portion, from displacing radially outwardly. This ensures that, if the coupling hub and coupling sleeve continue to rotate relative to one another, the driving elements (12) cannot re-engage the recesses and thus assume the torque transmitting position.

Abstract: A coupling (1) which is disconnectable in the driving direction of rotation has a coupling hub (2) and a coupling sleeve (3) rotatably arranged thereon. The hub (2) and sleeve (3) are connected in the driving direction of rotation by at least one locking ratchet (9, 10) and locking ratchet recess (7, 8 and 13, 14) respectively of the coupling hub (2) and the coupling sleeve (3), a locking pin (19, 20) with its longitudinal side (23, 24) extending in a tangential transverse bore (21, 22) presses the locking ratchets (9, 10) out of the locking ratchet recess (13, 14) in the coupling sleeve (3) when a switching ratchet (36) causes the rotation of the switching ring (4) by means of locking pins (19, 20).

Abstract: A connection between two components (2, 3) comprises an extension (5) from one of the components (2) which passes through a hole (6) in the other component (3). The extension (5) is formed from a plastics material having a memory ability and has a tubular shape. The edge of extension (5) is rolled over outwardly and backwardly towards the other component (3) and contacts it. A process for connecting the two components and a tool (9) for carrying out this process are also disclosed.

Abstract: A device for protecting a wide angle joint (8) associated with a driveshaft (7) for driving agricultural implements. It consists of a guard (1, 6, 11) which at least partially covers the double joint (8) and which is arranged so as to be axially movable relative to a sliding ring (2). The sliding ring (2) holds the guard (1) at a certain distance from the joint (8). The conical guard at its radially inward end comprises a flexible convoluted tube (6) covering the joint (8). The sliding ring (2) can contact a contact edge (10) of the tube (6) to compress it asymmetrically.

Abstract: A double joint provided with an arrangement for lubricating the centering devices which, via the lubricating nipple provided for a universal joint, may be supplied with lubricant. For this purpose, a hose is inserted centrally into the cross member into a threaded bore which communicates with the lubricating channels of the cross member. The hose extends into a lubricating channel in the centering device which is arranged so as to extend on the axis of the outer yoke of the universal joint. It supplies the centering device for the two universal joints, consisting of a sleeve and a journal, with lubricant. The flexible hose permits articulation of the outer yoke relative to the cross member without the hose leaving the lubricating channel. The articulation of the two parts relative to each other is accommodated by elastic deformation of the hose.

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: In a mechanism for connecting together in torque transmitting engagement a coupling sleeve and a power takeoff shaft, particularly in agricultural implements, there is provided a drawing lock which may be arrested in the open position. The drawing lock includes a locking ring which holds a plurality of radially movable torque transmitting balls in their locked position during torque transmission of the assembly. A slotted spring ring is provided which engages the torque transmitting balls to hold them radially inwardly thereby to arrest the device in the open position. When a power takeoff shaft is inserted into the bore of the coupling sleeve, the torque transmitting balls are moved radially outwardly and, as a result, the slotted spring ring resiliently expands in diameter thereby to cause a first stop face of the ring to become disengaged from a supporting face of a supporting ring which is axially affixed to the coupling sleeve.

Abstract: A drive shaft having an annular groove is placed in driving connection with a coupling sleeve by engagement members which constitute spherical balls radially movable within apertures in the coupling sleeve for engagement within the annular groove of the drive shaft. A locking ring engaging around the engagement members holds them in the locked position within the annular groove and when the mechanism is in the unlocked position, the locking ring is held axially away from the locked position by a latching member which engages within the apertures of the coupling sleeve to hold the locking ring in the unlocked position against the biasing force of a spring. A guide ring affixed to the coupling sleeve guides the locking ring by means of a gripping sleeve affixed thereto for movement relative to the coupling sleeve axially and nonrotatively with the guide ring including apertures through which the latching member engages when it is moved between the latched and the unlatched positions.

Abstract: A guard for a combination rotary drive shaft and universal joint includes a tubular member surrounding the shaft and a funnel-shaped member laterally enclosing the joint. An intermediate member interconnects the tubular member and the funnel shaped member. A bearing ring is engageable within one of the drive shaft and the universal joint and mounts the guard on the shaft and joint. To assemble the guard on the shaft and joint it is axially movable along the shaft with passageways formed by the intermediate member and the funnel-shaped member arranged to align with and move over outwardly extending locking tongues on the bearing ring. When a stop surface of the intermediate member contacts the locking tongues on the bearing ring further axial movement is blocked and the guard can be secured in position by rotating the funnel-shaped member so that the locking tongues are spaced angularly from the passageways in the funnel-shaped member.

Abstract: A universal joint connected at one side thereof with a drive shaft having a pair of telescopic protective tubes extending thereover is protectively sealed by a protective boot which is joined with one end of the drive shaft. An annular bearing body formed on one of the telescopic protective tubes engages in an annular groove in a shank member of the universal joint and the protective boot includes a conical connecting portion extending over a connecting piece which is attached with one of the protective tubes. A securing ring is engaged in an outer groove of the connecting piece and a conical collar of the securing ring operates to press the conical connecting portion of the protective boot against a funnel-like extension of the connecting piece. The connecting piece is formed with through-holes which receive therein locking tongues formed on the annular bearing body and the securing ring includes a stop face which axially fixes the locking tongues in the through-holes.

Abstract: A universal joint assembly connecting a pair of shaft ends is provided with a protective boot having a bellows-like configuration defining circumferential folds and including a conical connecting portion. A connecting piece is provided for joining a protective tube of one of the shafts with the protective boot. The connecting piece includes a funnel-like extension partially projecting into the conical connecting portion of the protective boot and a rigid supporting ring engages about the protective boot. The supporting ring includes a conical part adapted to extend in embracing engagement over the conical connecting portion of the protective boot, the conical part extending to partially overlap with a funnel-like extension of the connecting piece.