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HVAC actuator with range adjustment

  • US 10,295,215 B2
  • Filed: 07/21/2017
  • Issued: 05/21/2019
  • Est. Priority Date: 12/18/2013
  • Status: Active Grant
First Claim
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1. An HVAC actuator configured to actuate an HVAC component, the HVAC actuator comprising:

  • a housing;

    a rotatable output having a full range of motion between a first end position and a second end position, the rotatable output configured to engage and actuate the HVAC component;

    a drive mechanism configured to selectively drive the rotatable output toward the second end position;

    a spring operatively coupled to the rotatable output, the spring configured to rotatably bias the rotatable output toward the first end position;

    a range adjustment lever for adjusting the range of motion of the rotatable output to less than the full range of motion, the range adjustment lever including a range adjustment knob that is accessible by a user from outside of the housing and is configured to be hand manipulatable by the user to;

    select a new first end position from a plurality of available first end positions by moving the range adjustment knob by hand and without the use of a tool; and

    fix the selected new first end position, by manipulating the range adjustment knob by hand and without the use of a tool, sufficiently to prevent the spring bias from over-driving the rotatable output beyond the selected new first end position during subsequent operation of the HVAC actuator.

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