Abstract: A non-contacting seal which includes a stationary tooth that radially overlaps a tooth on a rotatable shaft, with the sealing action resulting from controlled clearance both radially between stationary tooth and the shaft, and axially between the stationary tooth and the shaft. The seal may also be in the form of a stationary tooth that is approximately in the same radial plane as a tooth on a rotatable shaft, with the sealing action resulting from both a controlled clearance gap between the two teeth and from the momentum of liquid traveling outward from the rotating tooth making it difficult for the liquid to turn to go axially through the gap between the rotating tooth and the stationary tooth. The seal may also comprise the combination of the two seals described above or a pair of the same seals, i.e., two radially overlapping or two in the same radial plane.

Abstract: A non-contacting seal which includes a stationary tooth that radially overlaps a tooth on a rotatable shaft, with the sealing action resulting from controlled clearance both radially between stationary tooth and the shaft, and axially between the stationary tooth and the shaft. The seal may also be in the form of a stationary tooth that is approximately in the same radial plane as a tooth on a rotatable shaft, with the sealing action resulting from both a controlled clearance gap between the two teeth and from the momentum of liquid traveling outward from the rotating tooth making it difficult for the liquid to turn to go axially through the gap between the rotating tooth and the stationary tooth. The seal may also comprise the combination of the two seals described above or a pair of the same seals, i.e., two radially overlapping or two in the same radial plane.

Abstract: A non-contacting seal which includes a stationary tooth that radially overlaps a tooth on a rotatable shaft, with the sealing action resulting from controlled clearance both radially between stationary tooth and the shaft, and axially between the stationary tooth and the shaft. The seal may also be in the form of a stationary tooth that is approximately in the same radial plane as a tooth on a rotatable shaft, with the sealing action resulting from both a controlled clearance gap between the two teeth and from the momentum of liquid traveling outward from the rotating tooth making it difficult for the liquid to turn to go axially through the gap between the rotating tooth and the stationary tooth. The seal may also comprise the combination of the two seals described above.

Abstract: A flow controller for preventing damage to a rotating machine by automatically redirecting the flow of lubricating oil in and out of a shaft driven pump in the event the machine goes into reverse rotation. The controller contains sealing elements that are moved under the influence of oil moving through the flow controller.

Abstract: Apparatus for preventing damage to a machine in the event the machine inadvertently goes into reverse rotation. An automatically actuated flow controller is adapted to reroute the flow of lubricant to the primary pump when the machine rotates in a reverse direction thereby assuring that lubricant is supplied to the machine bearings, and the like, to prevent the machine from being damaged. The mechanism also has the ability to deliver a metered amount of lubricant to the main pump from an auxiliary pump to prime the main pump when the main pump is shut down thus allowing the main pump to be quickly brought on-line.