# US 10,119,558 B2 · Control apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,558 B2 - Document ID: US10119558B2 - Status: Granted - Kind: B2 - Application number: 15/026,263 - Filed: 2014-09-24 - Published: 2016-09-08 - Granted: 2018-11-06 - Earliest claimed: 2013-10-15 - Assignees: Hydac Filtertechnik GmbH - Applicants: Hydac Filtertechnik GmbH - Inventors: Sascha Alexander Biwersi; Marcus Hettiger; Marcus Simon Specks; Christoph Stoenner; Marcus Karl Pfeiffer; Erik Lautner - Web page: https://patentgrep.com/patent/US10119558B2 ## CPC - F15B 21/0427: Heating - F15B 13/026: {Pressure compensating valves} - F15B 13/0402: {for linearly sliding valves, e.g. spool valves} - F15B 13/0417: {Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves} - F15B 13/042: operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)} - F15B 13/0803: {Modular units} - F15B 20/008: {Valve failure} - F15B 21/003: {Systems with different interchangeable components, e.g. using preassembled kits} - F15B 2013/006: {Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds} - F15B 2211/30535: the pressure compensating valve is arranged between pressure source and directional control valve - F15B 2211/6051: having valve means between output member and the load sensing circuit - F15B 2211/6055: using pressure relief valves - F15B 2211/6355: having valve means - F15B 2211/65: Methods of control of the load sensing pressure - F15B 2211/67: Methods for controlling pilot pressure - F15B 2211/8636: Circuit failure, e.g. valve or hose failure - F15B 2211/8752: Emergency operation mode, e.g. fail-safe operation mode - Y10T 137/86574: Supply and exhaust - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A control device, in particular for hydraulically controlling components of mobile working machines, has a pressure supply connection (P) and a tank or return connection (T) in addition to two user connections (A, B). Control and/or regulating valves (10, 14, 16, 18) are connected between the individual connections (P, T, A, B). Two control lines (C, Z) can control at least one of the control and/or regulating valves. A modular-type functional block (24, 26) is connected to at least one of the control lines (C, Z). ## Claims ### Claim 1 A control device, comprising: a pressure supply connection; a tank or return connection; first and second load connections; at least one of control valves or regulating valves connected between said supply connection, said tank or return connection, and said first and second load connections; first and second control lines connected in fluid communication with and controlling said control valves or regulating valves, said first control line being an oil overflow line; and a modular function block having an input side connected to said overflow line, a first load-sensing line and a second load-sensing line, said overflow line and said first and second load-sensing lines being part of a flange, said modular function block being configured as a pressure limiting valve and controlling said first load-sensing line with a control pressure or being provided with an electromagnetically operable directional control valve having an input port receiving pressure from said second load-sensing line. ### Claim 2 (depends on 1) A control device according to claim 1 wherein said second control line has therein at least one of a safety device against overpressure, a pressure limiting valve, a manually operable shutoff unit, an electromagnetically operable directional control valve or an adjustable flow restrictor. ### Claim 3 (depends on 1) A control device according to claim 1 wherein said modular function block comprises sensors. ### Claim 4 (depends on 3) A control device according to claim 3 wherein said sensors comprise at least one of a pressure sensor or a switch position monitor. ### Claim 5 (depends on 1) A control device according to claim 1 wherein said modular function block is connected within a valve block as an integrated component thereof. ### Claim 6 (depends on 5) A control device according to claim 5 wherein said modular function block is connectable as a standardized modular unit to said valve block. ### Claim 7 (depends on 1) A control device according to claim 1 wherein said at least one of control valves or regulating valves comprises a pressure compensator. ### Claim 8 (depends on 7) A control device according to claim 7 wherein said pressure compensator is an individual pressure compensator. ### Claim 9 (depends on 1) A valve device according claim 1 wherein said at least one of control valves or regulating valves comprises a multi-port spool valve connected to output sides of said first and second load connections in fluid communication. ### Claim 10 A control device, comprising: a pressure supply connection; a tank or return connection; first and second load connections; at least one of control valves or regulating valves connected between said supply connection, said tank or return connection, and said first and second load connections; first and second control lines connected in fluid communication with and controlling said control valves or regulating valves, said first and second control lines being connectable to one another by a pressure reducing valve on a discharge side of said first and second control lines, said second control line having therein at least one of a safety device against overpressure, a pressure limiting valve, a manually operable shutoff unit, an electromagnetically operable directional control valve or an adjustable flow restrictor; and different types of safety devices in form of modular-type function blocks specifying a same predefinable flange, said flange providing access to pressure between the pressure reducing valve and two pressure control valves. ### Claim 11 A control device, comprising: a pressure supply connection; a tank or return connection; first and second load connections; at least one of control valves or regulating valves connected between said supply connection, said tank or return connection, and said first and second load connections; first and second control lines connected in fluid communication with and controlling said control valves or regulating valves; and a tempering function only activatable when in a neutral cycle with no hydraulic load connected to the load connections; in the neutral cycle, a defined volume flow is passed through all of a plurality of sections of the control device, with the volume flow being fed via an orifice and an open closing element of a valve; whereby the tempering function is interrupted by signaling a load pressure via a load-sensing line to the closing element of the valve.