Patent ID: 8128066

Claim:
A door and board lifting device comprising a base, a foot operable lever pivotally mounted on the base to provide a fulcrum for the lever, and locking means for the lever; the lever having a portion adjacent one end thereof upon which a door or board may be positioned for lifting thereof by rotation of the lever about a fulcrum in a first sense; the locking means being operative to releasably secure the lever against rotation in a sense reverse to said first sense to lower a door or board lifted by said lever, and the locking means incorporating a rod and a locking element adapted for engagement both with the rod and with the lever to secure the lever against rotation in said reverse sense at any point through the lever's movement, the rod being fixedly mounted in upstanding position on the base, the rod having a distal end remote from the base, and the locking element being urged towards said distal end by resilient biasing means when the lever is rotated in said first sense, the locking element defining a hole through which the rod may freely pass when the locking element is orthogonal to the rod, and sides of which hole being adapted frictionally to grip the rod when the locking element is misaligned to a predetermined extent from orthogonality with the rod.