Abstract: An apparatus for mechanically controlling the opening and closing of a gate hingedly mounted at the upper margin of a portal, leveraging the gate from a closed position to either a fully open position or a partially-open resting position. The gate opening function is controlled by a lever-handle actuated gate lifting assembly including a lift leverage bracket carrying a lift actuating rod engageable with a fulcrumatic gate pickup bracket lifting a lifting element of a gate attachment arm providing a hinged connection for the chute gate. The gate closing-catch function is controlled by a pivoting gate stop bracket carried on a second gate attachment arm; the gate stop bracket is biased to have a catch end ridable along an edge of a second riser mount for the second hinged connection for the gate, until the catch end seats or lodges in a closing-catch notch of the second riser mount.

Abstract: An apparatus for mechanically controlling the opening and closing of a gate hingedly mounted at the upper margin of a portal, leveraging the gate from a closed position to either a fully open position or a partially-open resting position. The gate opening function is controlled by a lever-handle actuated gate lifting assembly including a lift leverage bracket carrying a lift actuating rod engageable with a fulcrumatic gate pickup bracket lifting a lifting element of a gate attachment arm providing a hinged connection for the chute gate. The gate closing-catch function is controlled by a pivoting gate stop bracket carried on a second gate attachment arm; the gate stop bracket is biased to have a catch end ridable along an edge of a riser mount for the second hinged connection for the gate, until the catch end seats or lodges in a closing-catch notch of the riser mount.

Abstract: A system providing a drive belt with optimal tension to reduce flapping and other displacement movements relative to the pulley wheels. Included is a coil spring biasing the idler arm and its idler pulley wheel) in alignment to maintain the desired amount of tautness in the belt. Also included is a fluid spring mechanism that resists movement of the idler arm until such resistance is overcome by the coil spring.

Abstract: The invention disclosed herein comprises a vehicle having improved suspension systems for wheels, motorized wheels and the seat of the user. The wheel suspension system includes a sleeve housing a non-round core snugly surrounded by an elastomeric shock-absorption material. Since both ends of the sleeve have downstanding arms forming the “forks” supporting a caster axle, irregularities in the terrain encountered by the caster exert torsion upon the core; embedding the core in elastomeric material dampens the shock.