Patent ID: 11952866
Assignee: BLACK GOLD PUMP AND SUPPLY, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 7:
8. A guideless cage for a down-hole valve comprises:
a cylindrical mandrel having an upper end and a lower end with a longitudinal axis defined there between;
an axial bore extending from the upper end to the lower end, the axial bore having an upper section and a lower section;
a ball stop structure disposed in the upper section, the ball stop structure extending radially inward into the axial bore, the ball stop structure comprising a downwardly facing shoulder;
an inwardly facing valve seat shoulder disposed within the lower section; and
a ball travel section defined within the axial bore, the ball travel section extending from the downwardly facing shoulder of the ball stop structure to the inwardly facing valve seat shoulder, the ball travel section comprising a conical profile having a larger diameter downwardly adjacent the ball stop structure and a smaller diameter upwardly adjacent the inwardly facing valve seat shoulder wherein the ball travel section provides a full-open flow area not having an intervening guide.