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US 12,612,994 B2Granted
Movable bases for shade structures
OwnerZhun-An Mainventor
Life of this patent
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Abstract
A movable base for a shade structure such as an umbrella that is operable between a movable configuration and a braked configuration. The movable base includes a first frame, including a plurality of wheels, such as caster wheels, and a second, e.g., movable, frame that is actuatable relative to the first frame and wheels. In the movable position, a plurality of feed are raised and the wheels are in contact with a ground surface. In the fixed position, the feet of the second frame are in contact with the ground and/or the wheels are raised.
Claims20
A movable base comprising:
- a first frame assembly including a plurality of wheels, the first frame assembly configured to be received within a cowl;
- a second frame assembly coupled with the first frame assembly, the second frame assembly comprising a U-shape and a plurality of feet, the second frame assembly configured to be received within the cowl;
- and
- an actuator coupled with a first portion of the second frame assembly such that the actuator actuates the second frame assembly to cause the plurality of feet to move relative to the plurality of wheels between a fixed configuration and a movable configuration,
- wherein in the fixed configuration, the plurality of feet is at or below a lowermost level of the plurality of wheels and in the movable configuration the plurality of feet are raised above a lowermost surface of the plurality of wheels.
2 more elements
A movable base comprising:
- a first frame assembly comprising a plurality of wheels;
- a second frame assembly comprising a lever, a translating member, and a plurality of feet coupled with the second frame assembly, the translating member mounted on a sliding shaft coupled with the first frame assembly;
- and
- an actuator configured to move a first end of the lever to cause the plurality of feet to bear at least a portion of a weight of the movable base to provide a braking effect reducing or eliminating movement of the movable base.
1 more element
A movable base comprising:
- a first frame assembly including an upper channel member and two spaced apart lower channel members, the lower channel members each coupled with a wheel assembly;
- a second frame assembly coupled with the first frame assembly, the second frame assembly comprising a plurality of feet;
- and
- an actuator configured to move the plurality of feet to be extended in a direction away from a bottom surface of the lower channel members to cause the plurality of feet to bear at least a portion of a weight of the movable base to provide a braking effect reducing or eliminating movement of the movable base.
1 more element
Dependencies are inferred from the claim text.