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. 24, 1995
Filed:
Oct. 22, 1993
Walter Kropp, Sulzbach am Main, DE;
Linde Aktiengesellschaft, , DE;
Abstract
A hydrostatic drive system having consumers (6, 8) connected to a demand regulated pump (1) and actuated by a directional control valve (5, 7) is disclosed. The consumers can be connected downstream of the control valves via return valves to a load-sensing line (12). To provide for load-independent allocation of the delivered flow when the consumers are simultaneously actuated, each directional control valve (5, 7) is assigned a pressure balance (9, 10) which can be controlled directly or indirectly by a signal difference formed from a load pressure signal and a delivered pressure signal. To enable one or more of the consumers (6) to be supplied with pressure medium on a priority basis, so that no reduction in the speed of movement occurs, a priority valve (20) is connected into the LS-line (12) in such manner that in a first operating position of the priority valve (20) the line sections (12b) downstream of the non-return valve(s) of the non-priority consumer(s) (8) are connected to the LS-line (12), and in a second operating position they are connected to a line (4a) which conveys the delivered pressure of the pump (1).