FR2391394A1 - Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction - Google Patents

Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction

Info

Publication number
FR2391394A1
FR2391394A1 FR7715833A FR7715833A FR2391394A1 FR 2391394 A1 FR2391394 A1 FR 2391394A1 FR 7715833 A FR7715833 A FR 7715833A FR 7715833 A FR7715833 A FR 7715833A FR 2391394 A1 FR2391394 A1 FR 2391394A1
Authority
FR
France
Prior art keywords
spring
semi
axle
coil spring
rotation
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.)
Granted
Application number
FR7715833A
Other languages
French (fr)
Other versions
FR2391394B1 (en
Inventor
Claude Jeanguenin
Francois Borelle
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.)
TECALEMIT EQUIP
Original Assignee
TECALEMIT EQUIP
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 TECALEMIT EQUIP filed Critical TECALEMIT EQUIP
Priority to FR7715833A priority Critical patent/FR2391394A1/en
Publication of FR2391394A1 publication Critical patent/FR2391394A1/en
Application granted granted Critical
Publication of FR2391394B1 publication Critical patent/FR2391394B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The semi-automatic brkae uses a coil spring (18) to apply braking forces to a rotatable spindle (11) and is suitable for monoplanar pivotable suspension arms. The spring is wound relatively tightly round the spindle (11) and its ends (19, 20) are respectively fixed to a static member (16) and a pivotable lever (24). Rotation of the axle (11) in one direction (25) causes the spring (18) to unwind and permit rotation. Rotation in the opposite sense (26) is prevented since it causes further tightening of the spring (18) onto the axle (11). The mechanism can be used singly i.e. to control a single pivoting arm, or in combination i.e. with several arms on one or more axles. In its simpler form the mechanism may be attached to an axle (11) to which a pivot arm (10) is cottered (12), and which is free to rotated relative to two perpendicular support arms (15, 16). One end of (19) of the spring (18) may be welded to a support arm (16) and the other is fixed (22) to the lever (24).
FR7715833A 1977-05-20 1977-05-20 Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction Granted FR2391394A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7715833A FR2391394A1 (en) 1977-05-20 1977-05-20 Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715833A FR2391394A1 (en) 1977-05-20 1977-05-20 Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction

Publications (2)

Publication Number Publication Date
FR2391394A1 true FR2391394A1 (en) 1978-12-15
FR2391394B1 FR2391394B1 (en) 1983-09-23

Family

ID=9191211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715833A Granted FR2391394A1 (en) 1977-05-20 1977-05-20 Semi-automatic brake for pivoting arm - has coil spring around axle tightened to resist rotation in one direction

Country Status (1)

Country Link
FR (1) FR2391394A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB331815A (en) * 1929-04-02 1930-07-02 British Tool And Engineering C Novel or improved one-way clutch or ratchet for use in imparting intermittent turning movement in one direction
FR941853A (en) * 1945-08-27 1949-01-24 Improvements to freewheel drive mechanisms
FR1177417A (en) * 1957-06-21 1959-04-24 Spring coil brake on a rod
FR2075189A5 (en) * 1970-01-02 1971-10-08 United Aircraft Corp
FR2179429A5 (en) * 1972-04-03 1973-11-16 Porter Co P L
FR2251051A1 (en) * 1973-11-09 1975-06-06 Sessa T

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB331815A (en) * 1929-04-02 1930-07-02 British Tool And Engineering C Novel or improved one-way clutch or ratchet for use in imparting intermittent turning movement in one direction
FR941853A (en) * 1945-08-27 1949-01-24 Improvements to freewheel drive mechanisms
FR1177417A (en) * 1957-06-21 1959-04-24 Spring coil brake on a rod
FR2075189A5 (en) * 1970-01-02 1971-10-08 United Aircraft Corp
FR2179429A5 (en) * 1972-04-03 1973-11-16 Porter Co P L
FR2251051A1 (en) * 1973-11-09 1975-06-06 Sessa T

Also Published As

Publication number Publication date
FR2391394B1 (en) 1983-09-23

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Legal Events

Date Code Title Description
ST Notification of lapse