FR2299262A1 - Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles - Google Patents

Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles

Info

Publication number
FR2299262A1
FR2299262A1 FR7503515A FR7503515A FR2299262A1 FR 2299262 A1 FR2299262 A1 FR 2299262A1 FR 7503515 A FR7503515 A FR 7503515A FR 7503515 A FR7503515 A FR 7503515A FR 2299262 A1 FR2299262 A1 FR 2299262A1
Authority
FR
France
Prior art keywords
right angles
tackle block
stroke amplifier
block system
lifting jacks
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
FR7503515A
Other languages
French (fr)
Other versions
FR2299262B1 (en
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.)
MALDONADO MANUEL
Original Assignee
MALDONADO MANUEL
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 MALDONADO MANUEL filed Critical MALDONADO MANUEL
Priority to FR7503515A priority Critical patent/FR2299262A1/en
Publication of FR2299262A1 publication Critical patent/FR2299262A1/en
Application granted granted Critical
Publication of FR2299262B1 publication Critical patent/FR2299262B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage

Abstract

A stroke amplifier for a lifting jack arrangement or piston adn cylinder actuator system, for load lifting slide members etc., to occupy a minimum space so that the system may be housed inside a column or other restricted zone, has upper and lower pairs of cable pulleys mounted on the piston spindle, or in an alternative design, one pair on the lower part of the spindle and another pair each side of a cross member actuated by two pistons, forming tackle block arrangement for a cable between the load and a fixed point, and combined also with further pulleys, with one pulley at right angles to the next, in each set, spaced apart a distance equal to their diameters.
FR7503515A 1975-01-30 1975-01-30 Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles Granted FR2299262A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7503515A FR2299262A1 (en) 1975-01-30 1975-01-30 Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7503515A FR2299262A1 (en) 1975-01-30 1975-01-30 Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles

Publications (2)

Publication Number Publication Date
FR2299262A1 true FR2299262A1 (en) 1976-08-27
FR2299262B1 FR2299262B1 (en) 1977-11-25

Family

ID=9150760

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503515A Granted FR2299262A1 (en) 1975-01-30 1975-01-30 Stroke amplifier for lifting jacks - uses tackle block system and adjacent pulleys at right angles

Country Status (1)

Country Link
FR (1) FR2299262A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126908A2 (en) * 1970-12-16 1972-10-13 Inst Francais Du Petrole

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126908A2 (en) * 1970-12-16 1972-10-13 Inst Francais Du Petrole

Also Published As

Publication number Publication date
FR2299262B1 (en) 1977-11-25

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Legal Events

Date Code Title Description
ST Notification of lapse