A harmonic drive including a housing component (4) and a drive element (18) which is held on the housing component, can be deformed by a wave generator (14), is in the form of a flanged bushing and has a toothing region (17) having a cylindrical basic shape and a disc section (19) which adjoins the toothing region (17). Adjoining the disc section (19) there is a bushing section (20) which is concentric to the toothing region (17), overlaps the latter in the axial direction and is held interlockingly between a cylindrical edge section (21), which is thick-walled in comparison with the bushing section (20), of the housing component (4) and an intrinsically rigid component (22) which is likewise solid in comparison with the flanged bushing (18).

A harmonic drive including a housing component (4) and a drive element (18) which is held on the housing component, can be deformed by a wave generator (14), is in the form of a flanged bushing and has a toothing region (17) having a cylindrical basic shape and a disc section (19) which adjoins the toothing region (17). Adjoining the disc section (19) there is a bushing section (20) which is concentric to the toothing region (17), overlaps the latter in the axial direction and is held interlockingly between a cylindrical edge section (21), which is thick-walled in comparison with the bushing section (20), of the housing component (4) and an intrinsically rigid component (22) which is likewise solid in comparison with the flanged bushing (18).

The present invention relates to a non-contact no-load power transmission device which can transmit power in a non-contact no-load state by using a magnetic-to-nonmagnetic structure. For this purpose, provided is a non-contact no-load power transmission device characterized by operating in a non-contact manner and comprising: a first disc unit 10 coupled to one of a power shaft or a load shaft and having a magnetic body on one side surface; and a second disc unit 20 coupled to the power shaft or the load shaft that corresponds to the first disc unit 10 and formed of a nonmagnetic body that attracts the magnetic body.

The wind power generation device comprises a blade. The wind power generation device includes a speed increaser to which power output from the blade is input. The wind power generation device includes a generator to which power output from the speed increaser is input. The wind power generation device includes a torque limiter portion provided on at least one of a power transmission path between the blade and the speed increaser or a power transmission path between the speed increaser and the generator. The torque limiter portion includes a first shaft. The torque limiter portion includes a second shaft disposed coaxially with the first shaft. The torque limiter portion includes a plate provided on the first shaft and having a plane perpendicular to the first shaft. The torque limiter portion is provided on the second shaft and includes a sandwiching portion that sandwiches the plate.

According to one aspect, a releasable roller clutch includes a shaft and a clutch housing positioned around the shaft. The shaft and clutch housing together defining a space there between with rollers positioned in said space. The rollers permit rotation of the shaft relative to the clutch housing when in an unlocked position in which the rollers are not wedged and prevent rotation of the shaft relative to the clutch housing when in a locked position in which the rollers are wedged. A cage extends into the space defined between the shaft and clutch housing. The cage is moveable relative to the clutch housing between an unlocking position and a locking position. The cage has a contact edge positionable to prevent the rollers from moving from the unlocked position to the locked position when the cage is in an unlocking position. The releasable roller clutch permits rotation of the shaft relative to the clutch housing in both directions when the cage is in the unlocking position.

A drill string system includes a drill bit disposed at a distal end of a drill string. A clutch is coupled with the drill bit. A mud motor is coupled to the clutch, and the mud motor is operable to receive a drilling fluid therein and transfer torque to the drill bit through the clutch. The clutch disengages upon application of a torque exceeding a predetermined threshold.

A downhole torque limiter. The downhole torque limiter may include a tubular housing; a pipe positioned within the tubular housing, the pipe transitioning from a larger inside diameter (ID.sub.L) to a smaller inside diameter (ID.sub.S), thereby forming a venturi profile having a first pressure zone (Z.sub.1) and a second pressure zone (Z.sub.2); a tubular valve plate radially positioned between the tubular housing and the pipe and rotationally fixed with the pipe; a lower sub rotationally fixed relative to the tubular housing and rotationally coupled to the tubular valve plate via a clutch mechanism; and a valve assembly positioned within a longitudinal opening extending along at least a portion of a sidewall of the tubular valve plate, the valve assembly configured to be activated by a pressure drop created by fluid flowing through the venturi profile.

A downhole torque limiter. The downhole torque limiter may include a tubular housing; a pipe positioned within the tubular housing, the pipe transitioning from a larger inside diameter (ID.sub.L) to a smaller inside diameter (ID.sub.S), thereby forming a venturi profile having a first pressure zone (Z.sub.1) and a second pressure zone (Z.sub.2); a tubular valve plate radially positioned between the tubular housing and the pipe and rotationally fixed with the pipe; a lower sub rotationally fixed relative to the tubular housing and rotationally coupled to the tubular valve plate via a clutch mechanism; and a valve assembly positioned within a longitudinal opening extending along at least a portion of a sidewall of the tubular valve plate, the valve assembly configured to be activated by a pressure drop created by fluid flowing through the venturi profile.

A perception system coupled to a harvesting head that includes row units, and slip clutches configured to couple the row units to a drive shaft and automatically disengage a jammed row unit. The perception system includes vision sensors collecting image data in front of the head, and a processor that processes the image data, and notifies the operator when it detects excessive crop buildup in front of one of the row units based on the image data. The perception processor can activate a notification device, and it can indicate which row unit has the detected crop buildup. The vision sensors can be positioned to have separate or overlapping fields of view covering the row units. A method of collecting image data in front of the row units, processing the image data to detect excessive crop buildup, and notifying the operator of detected buildups.

A perception system coupled to a harvesting head that includes row units, and slip clutches configured to couple the row units to a drive shaft and automatically disengage a jammed row unit. The perception system includes vision sensors collecting image data in front of the head, and a processor that processes the image data, and notifies the operator when it detects excessive crop buildup in front of one of the row units based on the image data. The perception processor can activate a notification device, and it can indicate which row unit has the detected crop buildup. The vision sensors can be positioned to have separate or overlapping fields of view covering the row units. A method of collecting image data in front of the row units, processing the image data to detect excessive crop buildup, and notifying the operator of detected buildups.