Four piston scotch yoke actuator
AssigneeHabonim Industrial Valves & Actuators Ltd.
InventorsIgor Berkovitz, Yoel Hadar
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Abstract
A Scotch yoke actuator includes a housing formed with four piston bores spaced equally 90° from each other, a shaft with four yokes, each of the yokes having a slot, and four pistons including two pairs of 180° opposing pistons, one pair of the opposing pistons being orthogonal to the other pair of the opposing pistons. Each of the pistons is arranged for linear motion in one of the piston bores. Each of the pistons includes a piston rod which includes a piston pin which is slidable in the slot. Linear motion of the pistons in the piston bores causes rotation of the shaft.
Claims10
A Scotch yoke actuator comprising:
- a housing formed with four piston bores spaced equally 90° from each other;
- a shaft with four yokes, each of said yokes having a slot;
- and
- four pistons comprising two pairs of 180° opposing pistons, one pair of the opposing pistons being orthogonal to the other pair of the opposing pistons, each of said pistons arranged for linear motion in one of said piston bores, wherein each of said pistons comprises a piston rod which comprises a piston pin which is slidable in said slot, wherein linear motion of said pistons in said piston bores causes rotation of said shaft.
Dependencies are inferred from the claim text.