ES399527A1 - Fluid pressure actuator - Google Patents

Fluid pressure actuator

Info

Publication number
ES399527A1
ES399527A1 ES399527A ES399527A ES399527A1 ES 399527 A1 ES399527 A1 ES 399527A1 ES 399527 A ES399527 A ES 399527A ES 399527 A ES399527 A ES 399527A ES 399527 A1 ES399527 A1 ES 399527A1
Authority
ES
Spain
Prior art keywords
piston
cylinder
stem
head
pistoncillo
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
ES399527A
Other languages
Spanish (es)
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.)
Corte & Cosso Soc Acc Sempl
Original Assignee
Corte & Cosso Soc Acc Sempl
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 Corte & Cosso Soc Acc Sempl filed Critical Corte & Cosso Soc Acc Sempl
Publication of ES399527A1 publication Critical patent/ES399527A1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

Improvements in a hydro-pneumatic lifting-positioning device, of the type consisting of a cylinder in which a piston fitted with a stem that protrudes from one of the ends of the cylinder through a press group is stops and in which the two chambers Opposite of the cylinder are filled with fluid under pressure whose passage from one to another chamber is governed by interception means incorporated into the piston and governable from the outside by means of a coaxial rod with the piston rod, characterized in that the piston rod (8) of the piston (9) has an axial cavity (18, 18a, 18b) in which are housed, in contact with each other, a control rod (20), operable from outside, and a sliding piston (21) that carries at its end internal, protruding from the stem base, a thickened head (23) supporting an annular seal (25) housed in an annular groove (24) located between the head and the body po of the pistoncillo, said lining intercepts the tubular gap (C) that the cavity of the stem (8) forms with the mobile pistoncillo (21) and that puts in communication the two opposite chambers (A, B) of the cylinder; the piston head (23) and the aforementioned gasket (25) are contained in an axially movable bowl (27), which forms, with the lower end (8b) of the stem, an annular light (29), of adjustable width, through which the fluid passes from the lower chamber of the cylinder to the tubular gap (C) mentioned above, or vice versa, whereby the axial regulation of said bowl determines the width of the free section of fluid passage and therefore the speed of movement of the piston when the thickened head (23) of the pistoncil is moved away from the hole of the tubular gap (C) by means of the manual operation of the control rod (20); and the thickened head (23) of the pistoncillo is automatically pushed towards the position of interception of the fluid by the pressure acting in the lower chamber (B) of the cylinder. (Machine-translation by Google Translate, not legally binding)
ES399527A 1971-02-10 1972-02-07 Fluid pressure actuator Expired ES399527A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6744671 1971-02-10

Publications (1)

Publication Number Publication Date
ES399527A1 true ES399527A1 (en) 1974-11-16

Family

ID=11302440

Family Applications (1)

Application Number Title Priority Date Filing Date
ES399527A Expired ES399527A1 (en) 1971-02-10 1972-02-07 Fluid pressure actuator

Country Status (7)

Country Link
AT (1) AT312856B (en)
BE (1) BE779062A (en)
ES (1) ES399527A1 (en)
FR (1) FR2124599B1 (en)
GB (1) GB1331397A (en)
NL (1) NL7201774A (en)
SE (1) SE384984B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033102A1 (en) * 1999-11-04 2001-05-10 Gain Gas Technique, S.L. Gas cylinder

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322796A1 (en) * 1983-06-24 1985-01-03 Eckard St. Margrethen Hansen Spring element
IT8422662V0 (en) * 1984-07-23 1984-07-23 Bugatti Lucio Dall Era Flavio IMPROVED DEVICE FOR SELECTIVE POSITIONING, IN HEIGHT OF FURNITURE COMPONENTS, SUCH AS SEATS, ARMCHAIRS AND / OR ARMCHAIRS.
DE3818065C1 (en) * 1988-05-27 1989-07-27 Hermann 7073 Lorch De Bansbach
GB2265435B (en) * 1992-03-25 1995-04-05 Lee Wang Industry Ltd A cushion device
CN101749349B (en) * 2008-12-08 2013-10-09 江阴市华宏强顺科技有限公司 Air damping buffer with piston rod air vent
ITTO20111078A1 (en) 2011-11-23 2012-02-22 Fandis S P A VISCOSE BRAKING DEVICE.
CN115324982B (en) * 2022-08-26 2024-03-26 中国人民解放军海军工程大学 Self-adaptive hydraulic silencing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1554201B1 (en) * 1965-02-25 1971-07-01 Fichtel & Sachs Ag Hydropneumatic lifting unit, especially for stepless height adjustment of table tops and chairs
DE1625465B2 (en) * 1967-11-30 1971-12-16 Stabilus Industrie- Und Handelsgesellschaft Mbh, 5400 Koblenz LOCKABLE PNEUMATIC OR HYDROPNEUMATIC SPRING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033102A1 (en) * 1999-11-04 2001-05-10 Gain Gas Technique, S.L. Gas cylinder

Also Published As

Publication number Publication date
FR2124599A1 (en) 1972-09-22
FR2124599B1 (en) 1975-03-21
AT312856B (en) 1974-01-25
NL7201774A (en) 1972-08-14
GB1331397A (en) 1973-09-26
SE384984B (en) 1976-05-31
BE779062A (en) 1972-05-30

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