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FR2385868A1 - Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement - Google Patents

Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement

Info

Publication number
FR2385868A1
FR2385868A1 FR7710020A FR7710020A FR2385868A1 FR 2385868 A1 FR2385868 A1 FR 2385868A1 FR 7710020 A FR7710020 A FR 7710020A FR 7710020 A FR7710020 A FR 7710020A FR 2385868 A1 FR2385868 A1 FR 2385868A1
Authority
FR
France
Prior art keywords
door
counterweight
manoeuvred
pulley
pulley block
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Withdrawn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
FR7710020A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7710020A priority Critical patent/FR2385868A1/en
Publication of FR2385868A1 publication Critical patent/FR2385868A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F17/00—Special devices for shifting a plurality of wings operated simultaneously

Landscapes

  • Braking Arrangements (AREA)

Abstract

The safety mechanism comprises a counterweight(1) which is manoeuvred by a pulley block and affords absolute safety to potentially dangerous counterbalanced elements, e.g. an up and over garage door. The door may be displaced with the assistance of a prim. counterweight on pulley-guided cables, and the additional counterweight (1) may be fixed to the original. The mechanism stabilizes the leaf of the door in the event of strong winds etc. The action of the additional counterweight increases safety factors and opposes the reversal of a manually effected door movement. The pulley-block(4, 7) compensates for the additional weight(1) and may be operated by a crank-handle(5). The block includes a brake of which the capacity considerably exceeds the forces applied by the weight (1). The brake may retain one of the counterweights should the cable to the prim. counterweight be ruptured.
FR7710020A 1977-03-29 1977-03-29 Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement Withdrawn FR2385868A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7710020A FR2385868A1 (en) 1977-03-29 1977-03-29 Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7710020A FR2385868A1 (en) 1977-03-29 1977-03-29 Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement

Publications (1)

Publication Number Publication Date
FR2385868A1 true FR2385868A1 (en) 1978-10-27

Family

ID=9188948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710020A Withdrawn FR2385868A1 (en) 1977-03-29 1977-03-29 Safety gear for e.g. up=and=over garage door - has secondary counterweight manoeuvred by pulley block and resisting reversal of door movement

Country Status (1)

Country Link
FR (1) FR2385868A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse