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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US401835017 mars 197519 avr. 1977Pettibone CorporationHydraulic cyliner systems with safeguarded float action
US403908510 juin 19762 août 1977Koehring CompanyCrane with a pivoted boom and a float valve therefor
US412804714 juil. 19775 déc. 1978Textron Inc.Actuator with locking valves
US41300497 avr. 197719 déc. 1978Caterpillar Tractor Co.Vent control for cylinder mounted load check valves
US41656757 avr. 197728 août 1979Caterpillar Tractor Co.Load check valve cylinder mounted
US41678927 avr. 197718 sept. 1979Caterpillar Tractor Co.Load check with mechanical venting means
US417024623 mai 19779 oct. 1979Sta-Rite Industries, Inc.Pilot operator valve
US417027913 avr. 19779 oct. 1979Societe Anonyme Potain Pioclain Materiel (P.P.M.)Fluid flow control devices
US428643230 août 19791 sept. 1981Caterpillar Tractor Co.Lock valve with variable length piston and hydraulic system for a work implement using the same
US43676739 janv. 198111 janv. 1983Dresser Industries, Inc.System and method for controlling the elevation of a boom hoist device
US441750217 nov. 198029 nov. 1983Dresser Industries, Inc.Load supporting hydraulic circuit with emergency automatic load restraint
US452351327 juin 198318 juin 1985WABCO Westinghouse Fahrzeugbremsen GmbHPneumatic door-operating arrangement
US455863027 sept. 198417 déc. 1985Oy Tampella AbHydraulic mechanism with elastically backed piston parts and cooperating valve means
US461918725 oct. 198228 oct. 1986Caterpillar Inc.Fluid control for two independent actuators
US475469330 mars 19875 juil. 1988Concordia Fluidtechnik GmbHValve
US476195324 déc. 19869 août 1988Dynamic Hydraulic Systems, Inc.Hydraulic elevator mechanism
US476195416 mars 19879 août 1988Dynamic Hydraulic Systems, Inc.Fork-lift system
US47684203 avr. 19876 sept. 1988Control arrangement for controlling a hydraulic drive for driving a piston pump
US485266028 oct. 19881 août 1989O & K Orenstein & Koppel AktiengesellschaftGrader blade having a pressurized float position
US50367507 juin 19906 août 1991Nippon Air Brake Kabushiki KaishaPilot-operated dual check valve assembly with cross-line flow valving pilot pistons
US523589618 mars 199217 août 1993Hoerbiger Fluidtechnik GmbHHydraulic cylinder/piston mechanism
US528408320 nov. 19928 févr. 1994Messier-BugattiSystem for powering the driving actuator of an aircraft undercarriage
US593417630 juil. 199710 août 1999Applied Power Inc.Hydraulic operating system
US59880287 juil. 199723 nov. 1999Putzmeister AktiengesellschaftProcess for conveying thick matter containing preshredded scrap metal or similar solids
US613161019 nov. 199717 oct. 2000SMC Kabushiki KaishaSpeed controller with pilot check valve
US61583138 oct. 199912 déc. 2000Putzmeister AktiengesellschaftProcess for conveying thick matter containing preshredded scrap metal or similar solids
US629318021 juil. 200025 sept. 2001SMC Kabushiki KaishaSpeed controller with pilot check valve
US629318121 sept. 199925 sept. 2001Caterpillar Inc.Control system providing a float condition for a hydraulic cylinder
US62960158 juin 20002 oct. 2001SMC Kabushiki KaishaSpeed controller with pilot check valve
US699721019 juil. 200214 févr. 2006Aladdin Engineering & Manufacturing, Inc.Valve arrangement including release valve
US747263814 oct. 20056 janv. 2009Caterpillar Inc.Hydraulic system with an actuator having independent meter-in meter-out control
US79544209 juil. 20087 juin 2011Sauer-Danfoss ApsHydraulic valve arrangement
US800188210 sept. 200823 août 2011Volvo Construction Equipment Holding Sweden ABDouble check valve having floating function

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