FR2365020A1 - Extendable ladder locking hinge of two-fulcrum type - joints extension to base ladder obtaining complete retraction and angular variation - Google Patents
Extendable ladder locking hinge of two-fulcrum type - joints extension to base ladder obtaining complete retraction and angular variationInfo
- Publication number
- FR2365020A1 FR2365020A1 FR7628168A FR7628168A FR2365020A1 FR 2365020 A1 FR2365020 A1 FR 2365020A1 FR 7628168 A FR7628168 A FR 7628168A FR 7628168 A FR7628168 A FR 7628168A FR 2365020 A1 FR2365020 A1 FR 2365020A1
- Authority
- FR
- France
- Prior art keywords
- ladder
- sections
- ladders
- hinge
- extendable
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
- B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/12—Lifts or other hoisting devices on ladders
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Ladders (AREA)
Abstract
The bi-fulcrum (5) lockable-hinge is for use between sections (2, 3) of extendable ladders, and on hoist-ladders in building construction. Use of the hinge permits the extension ladder (3) to be pivoted into a retracted position parallel to and against the base ladder (2), and allows the angular relationship between the two ladder (2, 3) sections to be varied over a wide range. The two ladder-sections may be joined by a hinge piece of two symmetrical trapezoidal plates (4) welded to the insides of the legs of a 'U' shaped rectangular hollow section brace (13). The bar of the 'U' lies parallel with and below the rungs (9) and may have pulley wheels for the hoist. A stub-axle (5) projects internally from each top corner of each plate (4) to enter sleeve pieces (7) which are bolted to the ladders.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7628168A FR2365020A1 (en) | 1976-09-20 | 1976-09-20 | Extendable ladder locking hinge of two-fulcrum type - joints extension to base ladder obtaining complete retraction and angular variation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7628168A FR2365020A1 (en) | 1976-09-20 | 1976-09-20 | Extendable ladder locking hinge of two-fulcrum type - joints extension to base ladder obtaining complete retraction and angular variation |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2365020A1 true FR2365020A1 (en) | 1978-04-14 |
FR2365020B1 FR2365020B1 (en) | 1982-08-27 |
Family
ID=9177831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7628168A Granted FR2365020A1 (en) | 1976-09-20 | 1976-09-20 | Extendable ladder locking hinge of two-fulcrum type - joints extension to base ladder obtaining complete retraction and angular variation |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2365020A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0396096A2 (en) * | 1989-05-02 | 1990-11-07 | Albert Böcker GmbH & Co. KG | An inclined lift consisting of several telescopic sections |
EP1081084A2 (en) * | 1999-09-04 | 2001-03-07 | B. Teupen Maschinenbaugesellschaft mbH | Folding jig for a lifting device pulled on a guiding arm |
-
1976
- 1976-09-20 FR FR7628168A patent/FR2365020A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0396096A2 (en) * | 1989-05-02 | 1990-11-07 | Albert Böcker GmbH & Co. KG | An inclined lift consisting of several telescopic sections |
EP0396096A3 (en) * | 1989-05-02 | 1991-08-14 | Albert Böcker GmbH & Co. KG | An inclined lift consisting of several telescopic sections |
EP1081084A2 (en) * | 1999-09-04 | 2001-03-07 | B. Teupen Maschinenbaugesellschaft mbH | Folding jig for a lifting device pulled on a guiding arm |
EP1081084A3 (en) * | 1999-09-04 | 2002-04-10 | B. Teupen Maschinenbaugesellschaft mbH | Folding jig for a lifting device pulled on a guiding arm |
Also Published As
Publication number | Publication date |
---|---|
FR2365020B1 (en) | 1982-08-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |