Abstract: A carabiner having a body which forms a part of a loop. A gate is connected to the body and forms a closed loop configuration therewith when the gate is in the closed position. A trigger is provided to release the gate from an open position. The trigger operates at the pivot end of the gate, preferably working in conjunction with a biasing spring. The preferred biasing spring holds the gate in an open position until the gate is activated to release. The biasing spring also preferably forces the gate into the closed position.

Abstract: A carabiner that has a gate that will be held open when moved past the three-quarters-open position. The gate can be closed by pulling down on the carabiner against the force from a connecting strap.

Abstract: An isochronous pendulum for clocks. The oscillation of the pendulum causes a small compensating mass attached to the pendulum's primary mass to move in such a manner that the center of mass of the pendulum moves in the path of a cycloid.