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AssigneeJindex PTY. Limited
InventorsStephen Francis FOWLER, Mitchell GORDON, David John BUCHANON TAYLOR
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This invention provides a linear actuator with a cylinder defining a cylinder axis. A piston is movable within the cylinder along the cylinder axis, and a piston rod extends axially from the piston for connection to a mechanism whereby in use, movement of the piston actuates the mechanism. A rotary output mechanism includes a rotary output element extending generally transversely from the cylinder and supported for rotation about an output axis generally normal to the cylinder axis. The rotary output mechanism is responsive to movement of the piston, and the rotary output element is adapted for operative engagement with an instrument mounted to the cylinder such that axial movement of the piston effects a corresponding rotational displacement of the rotary output element, whereby in use the instrument provides an output signal indicative of the position of the piston within the cylinder.
A linear actuator including:
A linear actuator according to any one of the preceding claims, wherein the rotary output mechanism is manufactured integrally with the actuator.
A linear actuator according to any one of the preceding claims, wherein the rotary output mechanism includes a scissor linkage mechanism, including a plurality of elongate linkage elements pivotably interconnected in a criss-cross configuration within the cylinder, with a pivot axis at each end.
A linear actuator according to any one of the preceding claims, wherein the piston or piston rod is constrained for axial movement with only one degree of freedom.
A linear actuator according to any one of the preceding claims, wherein the instrument is adapted for mounting on a side wall of the cylinder by means of an intermediate mounting bracket assembly.
A method for indicating the position of a piston within a cylinder of a linear actuator, the linear actuator including:
Dependencies are inferred from the claim text.