FR2517289B1 - LIFTING HOOK WITH SECURITY DEVICE - Google Patents

LIFTING HOOK WITH SECURITY DEVICE

Info

Publication number
FR2517289B1
FR2517289B1 FR8122694A FR8122694A FR2517289B1 FR 2517289 B1 FR2517289 B1 FR 2517289B1 FR 8122694 A FR8122694 A FR 8122694A FR 8122694 A FR8122694 A FR 8122694A FR 2517289 B1 FR2517289 B1 FR 2517289B1
Authority
FR
France
Prior art keywords
catch
casing
lever
hook
stop
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
FR8122694A
Other languages
French (fr)
Other versions
FR2517289A1 (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.)
BECQUE FORGES
Original Assignee
BECQUE FORGES
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 BECQUE FORGES filed Critical BECQUE FORGES
Priority to FR8122694A priority Critical patent/FR2517289B1/en
Priority to AT82420158T priority patent/ATE18660T1/en
Priority to DE198282420158T priority patent/DE80955T1/en
Priority to EP82420158A priority patent/EP0080955B1/en
Priority to DE8282420158T priority patent/DE3270029D1/en
Publication of FR2517289A1 publication Critical patent/FR2517289A1/en
Application granted granted Critical
Publication of FR2517289B1 publication Critical patent/FR2517289B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Emergency Lowering Means (AREA)
  • Supports Or Holders For Household Use (AREA)

Abstract

1. Lifting hook with safety device, including a hook casing (1) the open buckle of which delimits an inside hooking space (E) and an end of which forms a yoke (1a) for the linking of a closing catch (2) designed for co-operating with the fastening organ of a lifting apparatus or of a hanging organ, the catch (2) supporting in a hinged manner a safety lever (4) elastically and pivotally urged, housed and retracted within the yoke (1a) of the hook casing in the closing position of the catch, the interlocking end (4g) of the lever co-operating with a stop in the hook casing, said lifting hook being characterized in that the interlocking end (4g) of the swivelling safety lever (4) is shaped for abutment against the stop (1e or 8) of the casing, formed on a side of the hooking inside space (E) and adjacent to this space as much as possible, the interlocking lever (4) being of the type in which the fulcrum or pivotal axis (5), placed on a projection (2e) of the catch, is located between the resisting force applied on to the interlocking end (4g) and the motive force applied by finger thrust onto the opposed end (4b) of the lever, externally to the hook casing, the elastic means (6, 7 or 9) having the purpose to bring back permanently the interlocking end of the lever in the locking position against the stop of the casing ; the contacting point of the interlocking end (4g) with the stop (1e) or (8) of the casing being situated at a distance (x) slightly ahead (on the side of the general axis) of the vertical axis passing through the pivotal axis (5) of the vertical while there is provided a comparatively large interval (y) between the linking pin (3) of the catch and the said contacting point, the relative disposition of the three aforesaid points, namely : the pivotal axis (5) of the lever, the linking pin (3) of the catch and the contacting point of the interlocking end (4g) with the stop (1e or 8) permitting to ensure the locking of the catch on the casing of the hook, even when an excessive stress is exerted from the inside space of the catch, while said catch can be released and opened by a voluntary pressure of the finger, without excessive stress on the lever which is free to escape from the stop of the casing.
FR8122694A 1981-11-30 1981-11-30 LIFTING HOOK WITH SECURITY DEVICE Expired FR2517289B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR8122694A FR2517289B1 (en) 1981-11-30 1981-11-30 LIFTING HOOK WITH SECURITY DEVICE
AT82420158T ATE18660T1 (en) 1981-11-30 1982-11-24 HOOK WITH SAFETY DEVICE.
DE198282420158T DE80955T1 (en) 1981-11-30 1982-11-24 LIFTING HOOK WITH SAFETY DEVICE.
EP82420158A EP0080955B1 (en) 1981-11-30 1982-11-24 Lifting hook with safety device
DE8282420158T DE3270029D1 (en) 1981-11-30 1982-11-24 Lifting hook with safety device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8122694A FR2517289B1 (en) 1981-11-30 1981-11-30 LIFTING HOOK WITH SECURITY DEVICE

Publications (2)

Publication Number Publication Date
FR2517289A1 FR2517289A1 (en) 1983-06-03
FR2517289B1 true FR2517289B1 (en) 1985-07-12

Family

ID=9264666

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8122694A Expired FR2517289B1 (en) 1981-11-30 1981-11-30 LIFTING HOOK WITH SECURITY DEVICE

Country Status (4)

Country Link
EP (1) EP0080955B1 (en)
AT (1) ATE18660T1 (en)
DE (2) DE3270029D1 (en)
FR (1) FR2517289B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9003268D0 (en) * 1990-10-12 1990-10-12 Gunnebo Lifting Ab LIFTING HOOK
FR2744345B1 (en) * 1996-02-02 1998-06-05 Cauda Guillaume Jean Louis SECURITY SYSTEM FOR CHAINS, NECKLACES, BRACELETS
US20020152593A1 (en) * 2001-04-20 2002-10-24 Steven Hong Coupling self-locking hook
TWI482732B (en) * 2012-10-03 2015-05-01 Yoke Ind Corp Lock the hook
DE102019103517B4 (en) * 2019-02-12 2021-04-22 Pewag Austria Gmbh Safety hook

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB389954A (en) * 1932-01-29 1933-03-30 Joseph Fraser An improved safety cargo hook
US2197997A (en) * 1938-12-07 1940-04-23 Harold D Dee Self-locking hook
DE1625879A1 (en) * 1966-07-05 1970-09-24 Stal & Maskin Ab Safety hook
FR2108918A6 (en) * 1970-10-15 1972-05-26 Stas
US3741600A (en) * 1971-07-30 1973-06-26 American Hoist & Derrick Co Safety hook
GB1430543A (en) * 1973-06-01 1976-03-31 Bluten Kanthal Ab Safety hooks
FR2327186A1 (en) * 1974-01-18 1977-05-06 Forges Du Creux Du Sable Lifting hook locking device - has hook with yoke in which closing finger with lifting eye pivots
US4050730A (en) * 1976-05-19 1977-09-27 Akio Tada Hook latching device
FR2425400A1 (en) * 1978-05-09 1979-12-07 Beon Roger Le Safety catch for crane hook - has sprung pawl engaging notch in fork end to hold hook in closed or open position as required
FR2491901A3 (en) * 1980-10-10 1982-04-16 Charlet Sa Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut

Also Published As

Publication number Publication date
EP0080955B1 (en) 1986-03-19
ATE18660T1 (en) 1986-04-15
DE80955T1 (en) 1984-04-12
FR2517289A1 (en) 1983-06-03
EP0080955A1 (en) 1983-06-08
DE3270029D1 (en) 1986-04-24

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Legal Events

Date Code Title Description
ST Notification of lapse