Abstract: A device to close the left atrial appendage of a patient including a hollow shell having opposed male and female ratchet latches with the shell moveable into the left atrial appendage orifice to close the orifice by interconnecting the latches to expand the shell in conformance with the profile of the orifice.

Abstract: A dust collector includes a pneumatic duct chamber and a bag house interconnected by a valve assembly to provide incremental and varying air pressure within the bag house to prevent damage to the filter bags disposed within the bag house due to sudden changes in air pressure.

Abstract: A vehicle propulsion system particularly adaptable for use in connection with golf carts which are driven over a charge station having a pair of elongated slots such that electrical pickups are lowered from the golf cart into engagement with electrically charged contact bars disposed within the slots thereby causing activation of a flywheel assembly to power the golf cart wheels.

Abstract: A powered screed machine comprising means to drive a screed blade and means to power machine travel. The machine includes a pair of elongated modules disposed perpendicular to each other whereby a reciprocating weight within one of the modules causes forward and rearward movement of the machine and a reciprocating weight in the other module causes vibratory movement of the screed blade to groom the surface of freshly poured concrete.

Abstract: A planting machine for planting of seedlings into soil in a regular and uniform sequence, comprising a frame, at least one plant delivering unit comprising a means for conveying seedlings from a point of manual insertion to a point of placement in sequence in soil, each unit further comprising a means to open a furrow in soil, maintain opened furrow for delivery of seedling, and close opened furrow after delivery of seedling, said delivering unit having a rotatable drum, the structure of which defines compartments around its outermost surface for conveying seedlings from point of manual insertion to point of release, said drum compartments being outwardly open for reception of manually inserted seedlings and for release of seedlings to next delivery stage, further including; an upright conduit means, being open at its upper and lower ends and of sufficient size and located in proximity of, and exposed to, rotatable drum for acceptance of seedlings released from drum, such conduit means guiding seedling from p

Abstract: An apparatus by which wet sandblasting operations may be carried out with the operator disposed adjacent the discharge nozzle of the system having full control over the air, sand and liquid supplied to the discharge nozzle through the utilization of a single airflow control valve.