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US 10,895,107 B2Granted
Power assist module for roller shades
AssigneeHunter Douglas Inc.
InventorsStephen R. Haarer, Richard N. Anderson
Life of this patent
Estimating the term…
Abstract
A power assist module for use in roller tube driven products, such as roller shades. The module may be pre-wound prior to installation in a roller tube and retains its pre-wound condition, even after use, when removed from the roller tube.
Claims19
A method of providing power assist to a roller shade having a rotator tube, said method comprising:
- supporting a power assist module including a spring having a first end and a second end, and a tube adapter member positioned adjacent to the first end of the spring;
- axially decoupling a component of the power assist module from the tube adapter member;
- and
- rotating the component relative to the tube adapter member to wind the spring to adjust a spring force of the spring;
- wherein, when the power assist module is supported within the roller shade, the tube adapter member couples the rotator tube to the first end of the spring such that the tube adapter member, the rotator tube, and the first end of the spring rotate together relative to the second end of the spring.
2 more elements
A method of providing power assist to a roller shade having a rotator tube, said method comprising:
- supporting a power assist module for winding, the power assist module including a spring having a first end and a second end, a tube adapter member positioned adjacent to the first end of the spring, and a spring plug coupled to the second end of the spring;
- and
- rotating a component positioned adjacent to the tube adapter member to wind the spring in a manner that adjusts a spring force of the spring;
- wherein, when the power assist module is supported within the roller shade in an installed state, the tube adapter member couples the rotator tube to the first end of the spring such that the tube adapter member, the rotator tube, and the first end of the spring rotate together relative to the second end of the spring.
1 more element
Dependencies are inferred from the claim text.