초록 ▼

An hydraulic apparatus for the storage of energy is provided having pump means driven by a source of energy, a pressure line receiving pressure fluid from said pump means, means in said line for maintaining a constant pressure therein from said pump means, at least one pressure reservoir connected t

An hydraulic apparatus for the storage of energy is provided having pump means driven by a source of energy, a pressure line receiving pressure fluid from said pump means, means in said line for maintaining a constant pressure therein from said pump means, at least one pressure reservoir connected to said pressure line receiving fluid pressure therefrom and returning fluid pressure thereto and a restrictor means in said pressure line between the pump means and reservoir restricting flow in said line to maintain a predetermined constant pressure therein.

대표청구항 ▼

Hydraulic apparatus including a hydrostatic drive unit and means for storage of energy accumulated at certain stages of operation for use in braking by means of said hydrostatic unit comprising pump means driven by a source of energy, a hydrostatic motor, a pressure line receiving pressure fluid fro

Hydraulic apparatus including a hydrostatic drive unit and means for storage of energy accumulated at certain stages of operation for use in braking by means of said hydrostatic unit comprising pump means driven by a source of energy, a hydrostatic motor, a pressure line receiving pressure fluid from said pump means connected to said hydrostatic motor, means for maintaining a predetermined pressure in said pressure line during storing of energy, at least one pressure reservoir receiving and storing fluid pressure, a first branch line connecting said pressure line to said at least one pressure reservoir, a restrictor means in said branch line between the pressure line and reservoir restricting flow in said line to maintain the predetermined constant pressure during braking therein, whereby a minimum predetermined braking pressure is available in the system at all times, a second branch line connected between said pressure reservoir and pressure line and a pilot valve in said second branch line whereby energy stored in the pressure reservoir can be delivered to the hydrostatic drive means by actuating the pilot valve.