A spring system that includes an adjustable spring system that is operated by a motor.

A spring system that includes an adjustable spring system that is operated by a motor.

An actuator having a manual rotating mechanism and an anti-pinch mechanism includes an actuating body, a manual rotating mechanism, and an anti-pinch mechanism. The actuating body has a stretchable tube. The manual rotating mechanism has a sleeve assembly and a manual rotating wheel. The sleeve assembly has a central shaft and a connecting plate. The anti-pinch mechanism has a clutch wheel which is fixed to the stretchable tube and is movably sleeved around the central shaft. When the stretchable tube is blocked during a retraction stroke, the clutch wheel is detached from the connecting plate such that the clutch wheel follows the stretchable tube to idle. Therefore, the stretchable tube can be manually rotated to retract and the anti-pinch effect during the stretchable tube being retracted can be achieved.

An actuating drive (1) for actuating an actuator of a valve, with a motor drive unit (2) for the motorized actuation of the actuator and a manual drive element (3) for the manual actuation of the actuator, wherein an output shaft (13) of the actuating drive (1), which is displaced or can be displaced into an operative connection with the actuator, can be optionally actuated using the motor drive unit (2) or using the manual drive element (3). The actuating drive (1) includes at least one sensor (4, 8, 9, 10, 11), using which a rotational movement of the manual drive element (3) around a rotary axis (5) is detectable, in particular one that has been performed during the motor drive mode.

A retractable component actuator that comprises a first portion, fixable to a fixed component and comprising a first engagement feature, and a second portion, fixable to a retractable component and comprising a second engagement feature releasably supportable on the first engagement feature. The retractable component actuator further comprises an automated drive mechanism operable to move the first engagement feature upward and downward relative to the fixed component when the first portion is fixed to the fixed component. Downward movement of the second engagement feature relative to the first engagement feature is constrained by the first engagement feature. Upward movement of the second engagement feature relative to the first engagement feature is unconstrained by the first engagement feature. The second engagement feature is upwardly and downwardly co-movable, relative to the fixed component, with the first engagement feature.

An actuator having a manual rotating mechanism and an anti-pinch mechanism includes an actuating body, a manual rotating mechanism, and an anti-pinch mechanism. The actuating body has a stretchable tube. The manual rotating mechanism has a sleeve assembly and a manual rotating wheel. The sleeve assembly has a central shaft and a connecting plate. The anti-pinch mechanism has a clutch wheel which is fixed to the stretchable tube and is movably sleeved around the central shaft. When the stretchable tube is blocked during a retraction stroke, the clutch wheel is detached from the connecting plate such that the clutch wheel follows the stretchable tube to idle. Therefore, the stretchable tube can be manually rotated to retract and the anti-pinch effect during the stretchable tube being retracted can be achieved.

An actuator is for use in petroleum exploitation and is configured for displacing a rod for engaging a well barrier device. The actuator has a housing for at least a portion of the rod; at least two roller screws rotatably arranged in the housing; rotational means connected to the roller screws via one gear systems for each roller screw for simultaneous rotation of the roller screws; and a roller nut engaging each roller screw. The roller screws and roller nuts are configured such that rotation of the roller screws result in displacement of the roller nuts relative to the roller screws. Each roller nut is coupled with one actuation element via spherical bearings, and each actuation element is configured for mechanical coupling to an end portion of the rod for displacing the rod in operational use.

A retractable component actuator that comprises a first portion, fixable to a fixed component and comprising a first engagement feature, and a second portion, fixable to a retractable component and comprising a second engagement feature releasably supportable on the first engagement feature. The retractable component actuator further comprises an automated drive mechanism operable to move the first engagement feature upward and downward relative to the fixed component when the first portion is fixed to the fixed component. Downward movement of the second engagement feature relative to the first engagement feature is constrained by the first engagement feature. Upward movement of the second engagement feature relative to the first engagement feature is unconstrained by the first engagement feature. The second engagement feature is upwardly and downwardly co-movable, relative to the fixed component, with the first engagement feature.

An override device is for an actuator having a casing, a motor disposed within the casing and having a shaft rotatable about a central axis, and an output member drivably coupled with the motor shaft. The override device comprises a body having an outer portion engageable with the casing to couple the body with the actuator and an inner portion engageable with the motor shaft. As such, angular displacement of the override body angularly displaces the shaft about the shaft central axis so as to drive the output member. Preferably, the body outer portion includes an annular rim, the body inner portion includes a hub with a socket for receiving the motor shaft end and the body further includes a disk-like intermediate portion extending radially between and integrally connecting the hub and rim.

An actuating drive (1) for actuating an actuator of a valve, with a motor drive unit (2) for the motorized actuation of the actuator and a manual drive element (3) for the manual actuation of the actuator, wherein an output shaft (13) of the actuating drive (1), which is displaced or can be displaced into an operative connection with the actuator, can be optionally actuated using the motor drive unit (2) or using the manual drive element (3). The actuating drive (1) includes at least one sensor (4, 8, 9, 10, 11), using which a rotational movement of the manual drive element (3) around a rotary axis (5) is detectable, in particular one that has been performed during the motor drive mode.