Scaffold stairway having step holders

Patent metadata

Field	Value
Publication number	US-2020407984-A1
Application number	US-201916980793-A
Country	US
Kind code	A1
Filing date	Mar 7, 2019
Priority date	Mar 12, 2018
Publication date	Dec 31, 2020
Grant date	—

Abstract

The invention relates to a scaffold stairway (10) having two spaced-apart side rails (12, 14; 12(I), 14(I); 12(II), 14(II); 12(III), 14(III); 12(IV), 14(IV)) designed as hollow profiles (43; 43(I); 43(II); 43(III); 43(IV)) and a plurality of separate steps (16). The steps (16) can be fastened by their free ends (17) in holding devices for holding the steps that are designed as grooves (18; 18(I); 18(II); 18(III); 18(IV)) on the mutually facing lateral faces (19) of the side rails (12, 14; 12(I), 14(I); 12(II), 14(II); 12(III), 14(III); 12(IV), 14(IV)). The free ends (17) of the steps (16) lie on a groove flank (96a, 96b) or a groove flank portion (60a, 60b). As a result, the side rails (12, 14; 12(I), 14(I); 12(II), 14(II); 12(III), 14(III); 12(IV), 14(IV)) can be coupled.

First claim

1 . Scaffold stairway ( 10 ) comprising two separate side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) and a plurality of separate stairway step elements ( 16 ), which can be coupled to the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ), holding devices being formed on both side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) for holding the stairway step elements ( 16 ), characterized in that
the holding devices are provided in the form of grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) on side faces ( 19 ) of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) which face one another and are designed as hollow profiles ( 43 ; 43 (I) ; 43 (II) ; 43 (III) ; 43 (IV) ), into which grooves the stairway step elements ( 16 ) can be inserted by their free ends ( 17 ), and in that the free ends ( 17 ) of the stairway step elements rest on a groove wall ( 96 a , 96 b ) or groove-wall portions ( 60 a , 60 b ).

2 . Scaffold stairway according to claim 1 , characterized in that the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) are oriented in parallel.

3 . Scaffold stairway according to any of the preceding claims, characterized in that the same angle is formed between each groove ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) and the longitudinal edges ( 52 a , 52 b ; 52 a (I) , 52 b (I) ; 52 a (II) , 52 b (II) ; 52 a (III) , 52 b (III) ; 52 a (IV) , 52 b (IV) ) of the relevant side rail ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ), which angle in particular corresponds to a gradient angle ( 20 ) of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ).

4 . Scaffold stairway according to any of the preceding claims, characterized in that the distances from the ends ( 77 ) of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) at which the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) are formed in the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) are correspondingly identical on both side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ), such that the stairway step elements ( 16 ) can be inserted horizontally into the grooves ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ).

5 . Scaffold stairway according to any of the preceding claims, characterized in that the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) comprise a hollow profile ( 43 ; 43 (I) ; 43 (II) ; 43 (III) ; 43 (IV) ) and/or a foam filling in the interior of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ).

6 . Scaffold stairway according to any of the preceding claims, characterized in that the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) comprise first stops ( 61 ) for the stairway step elements ( 16 ) at the level of the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ).

7 . Scaffold stairway according to any of the preceding claims, characterized in that the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) comprise openings ( 66 ), in particular for rivets or bolts, at the level of the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) on the side faces ( 21 ) facing away from one another.

8 . Scaffold stairway according to any of the preceding claims, characterized in that a groove ( 82 ) is formed at the level ( 83 ) of each of the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) formed closest to the ends of the side rails in parallel with these grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ) on the side faces ( 21 ) of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) facing away from one another.

9 . Scaffold stairway according to any of the preceding claims, characterized in that at least one protruding rib ( 44 a - 44 s ) is formed, in particular centrally, in the longitudinal direction of the relevant side rail ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) which comprises the grooves ( 18 ; 18 (I) ; 18 (II) ; 18 (III) ; 18 (IV) ; 82 ) or groove portions ( 59 a - 59 d ), at least on the side faces ( 19 ) facing one another, in particular on the side faces ( 19 ) facing one another and the side faces ( 21 ) facing away from one another, of the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ).

10 . Scaffold stairway according to claim 9 , characterized in that the side rails ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ) comprise regularly or irregularly spaced ribs ( 44 a - 44 s ), a first rib ( 44 a - 44 s ) in particular being formed on a first longitudinal edge ( 52 a , 52 b ; 52 a (I) , 52 b (I) ; 52 a (II) , 52 b (II) ; 52 a (III) , 52 b (III) ; 52 a (IV) , 52 b (IV) ) and a second rib ( 44 a - 44 s ) being formed on a second longitudinal edge ( 52 a , 52 b ; 52 a (I) , 52 b (I) ; 52 a (II) , 52 b (II) ; 52 a (III) , 52 b (III) ; 52 a (IV) , 52 b (IV) ).

11 . Scaffold stairway according to any of claims 1 to 10 , characterized in that a plurality of hollow chambers ( 92 a , 92 b ) are formed in at least one side rail ( 12 , 14 ; 12 (I) , 14 (I) ; 12 (II) , 14 (II) ; 12 (III) , 14 (III) ; 12 (IV) , 14 (IV) ).

12 . Scaffold stairway according to any of the preceding claims, characterized in that the stairway step elements ( 16 ) comprise hook-shaped tabs ( 62 ), in particular comprising openings ( 66 ) into which bolts or rivets can be inserted.

13 . Scaffold stairway according to any of the preceding claims, characterized in that the side rails have a gradient angle ( 20 ) of from 30° to 55°.

14 . Scaffold stairway according to any of the preceding claims, characterized in that the scaffold stairway ( 10 ) is produced from light metal, in particular aluminum.

15 . Stairway arrangement comprising a scaffold stairway according to any of the preceding claims and a platform ( 22 , 24 ) arranged on the scaffold stairway ( 10 ), which can in particular be detachably fixed, in particular a platform ( 22 , 24 ) arranged on each end ( 77 ) of the scaffold stairway ( 10 ).

16 . Stairway arrangement according to claim 15 , characterized in that the platform ( 22 , 24 ) comprises two slots ( 70 a , 70 b ) and/or two p

Assignees

• Peri Gmbh

Inventors

• Hellenschmidt Julian

Classifications

• E06C1/39

  Ladders having platforms; Ladders changeable into platforms (platforms for use on ladders E06C7/16) · CPC title

• E06C7/084

  Rungs comprising projecting tabs or flanges · CPC title

• E06C7/082

  Connections between rungs or treads and longitudinal members · CPC title

• E04G5/10 Primary

  Steps or ladders specially adapted for scaffolds {(E04G27/00 takes precedence)} · CPC title

• E06C7/16

  Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms (aspects relating to the lifting B66F) · CPC title