Abstract: A latch for releasably securing a member to a support structure. The latch includes a substantially rigid member mounted pivotably in the member. The rigid member includes a catch disposed at one end thereof and a handle at another end thereof. The rigid member also includes a substantially resilient member coupled to the rigid member for urging the rigid member to pivot to a position in which the catch thereof engages the support structure to secure the member thereto. The handle is adapted to pivot the rigid member to release the catch from engagement with the support structure to release the member.

Abstract: A bearing for supporting a moving member on a support structure. The bearing includes a substantially U-shaped member having an internal periphery and an external periphery. The bearing also includes a first securer, associated with the internal periphery of the U-shaped member, for securing the moving member to the U-shaped member and a second securer, associated with the external periphery of the U-shaped member, for securing the U-shaped member to the support structure.

Abstract: In lieu of the customary concentric annuli upon which to receive a ported valving plate, the seat has a plurality of lands at a common radial distance inwardly from the periphery thereof. The separations between the lands, circumferentially, define additional, fluid flow paths which increase the efficiency of the plate valve in which the seat is employed. Too, as the lands are circumferentially non-continuous, unlike the known, concentric annuli, surface-tension adhesion of the ported, valving plate is greatly minimized.