HYDRANT-WATER PUMP Russian patent published in 1994 - IPC

FIELD: water supply system. SUBSTANCE: hydrant-water pump has a body with seals mounted in it through the height, a tubular member mounted in the body, the tubular member has windows for passing water into a drive member. The body has a journal positioned on the lower end, and the drive member is made in the form of an oval ring with a bracket, the ring is positioned between the body journal and the flange, and a pair of trapezoidal cross section wedges mounted on the ring. The cross section of the member windows is made in the form of a wedge with its sharp end down, vertical and oblique edges of the wedge have chamfers. The middle seal is mounted under the upper horizontal edges of the windows when the hydrant-water pump is in open position. EFFECT: improved structure. 4 dwg