Abstract: A linear actuator with an integrated variable frequency drive. The linear actuator includes an AC motor. A screw assembly with an output shaft is mechanically coupled to the AC motor. An extension tube is provided with a front mount. The extension tube is configured and arranged to be driven in translatory motion in either direction by the screw assembly. A cover tube encloses the extension tube and screw assembly. An actuator housing is operatively associated with the screw assembly and the AC motor. The actuator housing has a removable cover. A bracket is attached to the inside surface of the removable cover. The VFD is mounted within the actuator housing. The VFD may be mounted on the bracket adjacent to the inside surface of the removable cover. The removable cover may facilitate heat transfer out of the actuator housing.

Abstract: A linear actuator with an integrated variable frequency drive. The linear actuator includes an AC motor. A screw assembly with an output shaft is mechanically coupled to the AC motor. An extension tube is provided with a front mount. The extension tube is configured and arranged to be driven in translatory motion in either direction by the screw assembly. A cover tube encloses the extension tube and screw assembly. An actuator housing is operatively associated with the screw assembly and the AC motor. The actuator housing has a removable cover. A bracket is attached to the inside surface of the removable cover. The VFD is mounted within the actuator housing. The VFD may be mounted on the bracket adjacent to the inside surface of the removable cover. The removable cover may facilitate heat transfer out of the actuator housing.

Abstract: A linear actuator with an integrated variable frequency drive. The linear actuator includes an AC motor. A screw assembly with an output shaft is mechanically coupled to the AC motor. An extension tube is provided with a front mount. The extension tube is configured and arranged to be driven in translatory motion in either direction by the screw assembly. A cover tube encloses the extension tube and screw assembly. An actuator housing is operatively associated with the screw assembly and the AC motor. The actuator housing has a removable cover. A bracket is attached to the inside surface of the removable cover. The VFD is mounted within the actuator housing. The VFD may be mounted on the bracket adjacent to the inside surface of the removable cover. The removable cover may facilitate heat transfer out of the actuator housing.

Abstract: An adjustable clutch assembly comprising a base portion, a clutch housing cap, a first rotary member having a first torque transfer surface rotatable about a clutch axis and a second rotary member having a second torque transfer surface opposing said first torque transfer surface, a spring element configured to bias the opposed first and second torque transfer surfaces towards each other, a gear drive comprising a wheel engaging the clutch housing cap and a shaft engaging the wheel, a locking element constraining rotational movement of the clutch housing cap relative to the base portion, the gear drive, base portion, locking element and clutch housing cap configured such that selective rotation of the wheel about the clutch axis causes axial movement of the clutch housing cap along the clutch axis relative to the base portion, whereby the bias of the spring may be adjusted.

Abstract: A modular clutch assembly (15) comprising a first rotary member (16) having a first torque transfer surface (73 or 69), said first rotary member configured to rotate about an axis (x-x) and to rotationally couple to a first shaft (20), a second rotary member (22) configured to rotate about the axis and to rotationally couple to a second shaft (21), a pressure plate (23) configured to rotate about the axis, at least one of the second member and the pressure plate having a second torque transfer surface (78 or 66) opposing the first torque transfer surface, a spring element (29) configured to bias the opposed first and second torque transfer surfaces towards each other, and a pilot bearing (30) configured to act between the second member and the first shaft or the first member and the second shaft.