The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2001
Filed:
Jul. 22, 1999
Alfred Langen, Goldbach, DE;
Horst Deininger, Horstein-Alzenau, DE;
Linde Aktiengesellschaft, , DE;
Abstract
A hydrostatic drive system with an adjustable pump in the delivery flow has at least one consuming device connected to the pump. Associated with each consuming device are actuation devices that specify the direction of movement and the speed of movement. A control valve device controls the direction of movement and the speed of movement. The delivery flow of the pump can be adjusted to the hydraulic flow required by the actuated consuming devices. The hydrostatic drive system makes possible the operation of the consuming devices independently of the load and the operation of the consuming devices independently of the direction of the load, in a simple manner and with lower energy losses. Associated with each consuming device is a delivery flow sensor that measures the hydraulic flow discharged from the consuming device to a reservoir, and/or a delivery flow sensor that measures the hydraulic flow from a delivery line of the pump to the consuming device. Each delivery flow sensor is connected to an electronic control. The electronic control is connected to the actuation device, to the control valve device and to a delivery flow setting device of the pump. The electronic control controls the control valve device and/or the delivery flow setting device of the pump as a function of the direction of movement and the speed of movement specified at the actuation device and of the hydraulic flow discharged from the consuming device measured at the delivery flow sensor and/or the hydraulic flow admitted to the consuming device measured at the delivery flow sensor.