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An intermittently assisted hydrostatic bearing (10) for a hydraulic apparatus having a rotatable surface which is periodically assisted from a pressure balance of less than 100% to a pressure balance greater than 100% pressure balance includes a pressurized fluid supply source (28) for supplying a p

An intermittently assisted hydrostatic bearing (10) for a hydraulic apparatus having a rotatable surface which is periodically assisted from a pressure balance of less than 100% to a pressure balance greater than 100% pressure balance includes a pressurized fluid supply source (28) for supplying a pressurized fluid, a supply channel (30, 31, 32 and 34) for supplying pressurized fluid from the pressurized fluid supply source to a point (36) between cooperating opposed bearing surfaces (24) and a pressure producing device (48) which communicates with the fluid supply channel and in response to a command signal causes the hydrostatic bearing to attain a greater than 100% pressure balance. The invention further includes a check valve (60) positioned in the supply channel (32) to prevent the reverse flow of fluid into the pressurized fluid supply source (28).

대표청구항 ▼

An intermittently assisted hydrostatic bearing having opposed bearing surfaces with periodic assistance being provided to increase pressure balance from less than 100% to a pressure balance greater than 100% with the pressure balance being a measure of a percentage of an overall load supported by a

An intermittently assisted hydrostatic bearing having opposed bearing surfaces with periodic assistance being provided to increase pressure balance from less than 100% to a pressure balance greater than 100% with the pressure balance being a measure of a percentage of an overall load supported by a fluid film, comprising: a pressurized fluid supply source for supplying a pressurized fluid; a supply channel, communicating with the pressurized fluid supply source, for supplying the pressurized fluid from the pressurized fluid supply source to a point between the opposed bearing surfaces; and pressure producing means coupled to the supply channel for intermittently applying a pressure pulse to the bearing surfaces in response to a pulse command signal to produce a pressure balance greater than 100% between the bearing surfaces by increasing the pressure of the pressurized fluid which is supplied to the point between the opposed bearing surfaces from a pressure produced by the pressurized fluid supply source, to establish a hydrodynamic bearing between the opposed bearing surfaces when the rotational speed of the rotating member is less than the rotational speed required for achieving a hydrodynamic bearing at the opposed bearing surfaces.