FR2386711A1 - Hydraulic cylinder for goods or personnel lift - has tube-shaped plunger with open bottom end receiving fluid to resist buckling when extended - Google Patents

Hydraulic cylinder for goods or personnel lift - has tube-shaped plunger with open bottom end receiving fluid to resist buckling when extended

Info

Publication number
FR2386711A1
FR2386711A1 FR7809787A FR7809787A FR2386711A1 FR 2386711 A1 FR2386711 A1 FR 2386711A1 FR 7809787 A FR7809787 A FR 7809787A FR 7809787 A FR7809787 A FR 7809787A FR 2386711 A1 FR2386711 A1 FR 2386711A1
Authority
FR
France
Prior art keywords
cylinder
plunger
tube
bottom end
hydraulic cylinder
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.)
Withdrawn
Application number
FR7809787A
Other languages
French (fr)
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.)
OMAR SpA
Original Assignee
OMAR SpA
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 OMAR SpA filed Critical OMAR SpA
Publication of FR2386711A1 publication Critical patent/FR2386711A1/en
Withdrawn legal-status Critical Current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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
  • Types And Forms Of Lifts (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The cylinder is for use on hydraulically operated lifts, to provide a hydraulic cylinder which would stand up to buckling loads occurring, when the plunger is in the extended position. The cylinder assembly has a cylinder body with plunger provided with an open bottom end and collar. The cylinder is closed up by face plate and has a fluid passage opening near to the bottom. A similar opening is provided at the top of the cylinder in the vicinity of the gland seal. The plunger is a tube-shaped element closed by face plate at the top. During the lifting operation fluid fills not only the cylinder, but also enters into the hollow part of the plunger.
FR7809787A 1977-04-05 1978-04-03 Hydraulic cylinder for goods or personnel lift - has tube-shaped plunger with open bottom end receiving fluid to resist buckling when extended Withdrawn FR2386711A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2211777A IT1074695B (en) 1977-04-05 1977-04-05 DYNAMIC FLUID CYLINDER IN PARTICULAR FOR LIFTS AND LOADERS

Publications (1)

Publication Number Publication Date
FR2386711A1 true FR2386711A1 (en) 1978-11-03

Family

ID=11191735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809787A Withdrawn FR2386711A1 (en) 1977-04-05 1978-04-03 Hydraulic cylinder for goods or personnel lift - has tube-shaped plunger with open bottom end receiving fluid to resist buckling when extended

Country Status (4)

Country Link
DE (1) DE2814513A1 (en)
ES (1) ES235131Y (en)
FR (1) FR2386711A1 (en)
IT (1) IT1074695B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945199A1 (en) * 1979-11-09 1981-05-14 Manfred 5630 Remscheid Boese Dual-acting hydraulic ram assembly - has piston rod prestressed by medium under pressure in internal chamber
DE3215795C2 (en) * 1982-04-28 1986-08-14 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Pressurized working cylinder
FR2533644B1 (en) * 1982-09-28 1986-12-19 Snecma HYDRAULIC CYLINDER WITH COAXIAL MULTI-CHAMBER AND SYNCHRONIZED CYLINDER CONTROL SYSTEMS OF THIS TYPE
DE202007011265U1 (en) 2007-08-11 2007-10-18 Bümach Engineering International B.V. Kink stabilization of tubular piston rods of working cylinders

Also Published As

Publication number Publication date
DE2814513A1 (en) 1978-10-12
IT1074695B (en) 1985-04-20
ES235131Y (en) 1978-11-01
ES235131U (en) 1978-06-16

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Legal Events

Date Code Title Description
ST Notification of lapse