Patent ID: 9702442
Date: 2017-07-11
CPC Classifications: F15B,F16H,F16K

Claim:
1. A rotary actuator comprising: a rotatable member to be coupled to a valve, the rotatable member rotatable about a first axis, the rotatable member being substantially square-shaped; a linear actuator having a first stem movable along a second axis offset from and perpendicular to the first axis; and a first chain having a first end and a second end opposite the first end, the first end of the first chain coupled to the first stem and the second end of the first chain coupled to the rotatable member, the first chain disposed around at least a portion of an outer edge of the rotatable member, wherein movement of the first stem along the second axis rotates the rotatable member about the first axis, and wherein the first chain includes a plurality of links, a first link disposed along and having a substantially same length as a side of the rotatable member.