Lift assembly and spa including the same
DCFirst Claim
1. A lift assembly for a spa cover, the spa cover for covering an open upper end of a spa, the lift assembly comprising:
- a lever arm having a first portion for supporting a spa cover, and a first end for pivotable coupling to a sidewall of a spa for rotation of the lever arm about an axis between a closed position in which the spa cover rests on the upper end of the spa, and an open position in which the spa cover is displaced from the upper end of the spa, the first end extending substantially parallel to the axis;
a pneumatic spring comprising a pneumatic cylinder and a piston rod, and having a first end and a second end, the first end of the pneumatic spring pivotally coupled to the lever arm, the pneumatic spring pivoting about the second end as the lever arm moves between the open and closed positions so that in the open position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the closed position, and in the closed position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the open position,wherein in use, one of;
the spring applies an extensive force to the lever arm in each of the open and closed positions, orthe spring applies a compressive force to the lever arm in each of the open and closed positions.
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Abstract
A lift assembly for a spa cover is disclosed. The spa cover is for covering an open upper end of a spa. The lift assembly includes a lever arm having a first portion for supporting a spa cover, and a first end for pivotable coupling to a sidewall of a spa for rotation of the lever arm between a closed position in which the spa cover rests on the upper end of the spa, and an open position in which the spa cover is displaced from the upper end of the spa. The lift assembly also includes a resilient spring having a first end coupled to the lever arm, and a second end for coupling to the sidewall of the spa. In the open position of the lever arm, the spring urges the lever arm to rotate toward the closed position. A spa including the lift assembly is also disclosed.
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Citations
11 Claims
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1. A lift assembly for a spa cover, the spa cover for covering an open upper end of a spa, the lift assembly comprising:
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a lever arm having a first portion for supporting a spa cover, and a first end for pivotable coupling to a sidewall of a spa for rotation of the lever arm about an axis between a closed position in which the spa cover rests on the upper end of the spa, and an open position in which the spa cover is displaced from the upper end of the spa, the first end extending substantially parallel to the axis; a pneumatic spring comprising a pneumatic cylinder and a piston rod, and having a first end and a second end, the first end of the pneumatic spring pivotally coupled to the lever arm, the pneumatic spring pivoting about the second end as the lever arm moves between the open and closed positions so that in the open position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the closed position, and in the closed position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the open position, wherein in use, one of; the spring applies an extensive force to the lever arm in each of the open and closed positions, or the spring applies a compressive force to the lever arm in each of the open and closed positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lift assembly for a spa cover, the spa cover for covering an open upper end of a spa, the lift assembly comprising:
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a lever arm having a first portion for supporting a spa cover, and a first end for pivotable coupling to a sidewall of a spa for rotation of the lever arm about an axis between a closed position in which the spa cover rests on the upper end of the spa, and an open position in which the spa cover is displaced from the upper end of the spa, the first end extending substantially parallel to the axis; a single-acting pneumatic spring comprising a pneumatic cylinder and a piston rod, and having a first end and a second end, the first end of the pneumatic spring pivotally coupled to the lever arm, the pneumatic spring pivoting about the second end as the lever arm moves between the open and closed positions so that in the open position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the closed position, and in the closed position of the lever arm, the pneumatic spring urges the lever arm to rotate toward the open position.
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Specification