GB825615A - A valve mechanism for controlling the ingress and egress of fluid from a hydraulic cylinder - Google Patents

A valve mechanism for controlling the ingress and egress of fluid from a hydraulic cylinder

Info

Publication number
GB825615A
GB825615A GB33700/57A GB3370057A GB825615A GB 825615 A GB825615 A GB 825615A GB 33700/57 A GB33700/57 A GB 33700/57A GB 3370057 A GB3370057 A GB 3370057A GB 825615 A GB825615 A GB 825615A
Authority
GB
United Kingdom
Prior art keywords
piston
line
pushed back
egress
ingress
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33700/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emhart Manufacturing Co
Original Assignee
Emhart Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emhart Manufacturing Co filed Critical Emhart Manufacturing Co
Publication of GB825615A publication Critical patent/GB825615A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

825,615. Valves. EMHART MANUFACTURING CO. Oct. 29, 1957 [Nov. 13, 1956], No. 33700/57. Classes 69 (2) and 135. To actuate piston 11, switch 17a is thrown to connect the pump 13 to line 20, say, and line 19 to exhaust. Since the springs 33 are weaker than the springs 37, the piston 26 (on the left) is pushed back first to admit liquid via ports 34, 35 to the lower side of the piston 11. Piston 23a (on the left) is then pushed back, pulling with it the upper plunger 23. The pressure above piston 11 then pushes the right-hand valve 31 to the left, so that liquid can flow via ports 35, 34 and line 19 to exhaust. A neutral position of switch 17a will lock the motor, but if excessive pressure occurs valve 31, plunger 23 and piston 23a can be pushed back to allow liquid to escape.
GB33700/57A 1956-11-13 1957-10-29 A valve mechanism for controlling the ingress and egress of fluid from a hydraulic cylinder Expired GB825615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US825615XA 1956-11-13 1956-11-13

Publications (1)

Publication Number Publication Date
GB825615A true GB825615A (en) 1959-12-16

Family

ID=22171959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33700/57A Expired GB825615A (en) 1956-11-13 1957-10-29 A valve mechanism for controlling the ingress and egress of fluid from a hydraulic cylinder

Country Status (1)

Country Link
GB (1) GB825615A (en)

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