Poclain

Societe Anonyme: Poclain

Pierre C Fillion

Gilles P Vicentini

Rene F Jacob

A flow regulation device includes a main regulator connected to the exhaust pipe and delivery pipe of a fluid motor having a valve controlled by the feed pressure to the motor for varying flow permitted from the motor; flow from the valving means passes through a restriction with pressure between the valve and the restriction tending to close the valve. A supplemental valve opens to shunt flow around the restriction following opening of the first valve with the invention being used for the functional control of a winch.

Flow regulator

A braking system for the brake of a fluid motor including a jack for releasing the brake and two selectors for controlling the flow of working fluid to the jack. The first selector is responsive to the supply of fluid to the motor to place the jack in communication with a supply pipe and the second selector is responsive to pressure in a bleed pipe connected to the fluid supply to the motor to place the supply pipe in communication with a supply of working fluid under pressure.

Fluid motor braking system

The present invention is directed to a supply circuit for a hydraulic jack employing two pumps in which a valve is positioned in a pipe which is branched to the delivery pipe of the first pump and is controlled by two jacks supplied by the fluid delivered by the second pump. A constrictor is positioned in the supply system for one of the jacks and another constrictor is placed in the discharge system for the two jacks with the invention being particularly applicable to achieving a stable control circuit for the load relief of the first pump.

Pressurized fluid control circuit

The invention relates to a supply apparatus for two receiving means having a pressure summation device. A relief valve with a double control system is provided on a pipe shunted to the delivery pipe of the pump and has two control connections, a rod connecting the discharge member of the pressure summation device to the first of the said connections and a control pipe connecting that portion of the discharge pipe located between the connection of the latter to the delivery pipe and the relief valve to the second of the said connections. The invention is applicable to the realization of a supply apparatus with a pressure transfer system.

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Nanteuil-le-Haudouin, France

Pierre C Fillion