Back to results
US 6,202,788 B1Granted
Latch for scaffold
AssigneePlettac AG
InventorsWolfgang Busch, Klaus Buttgereit
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePlettac AG
InventorsWolfgang Busch, Klaus Buttgereit
Estimating the term…
The invention relates to a pivoting pin (1) for use on scaffold vertical frames (6) as a connecting element for scaffold bars and braces extending in horizontal and/or vertical direction, having a sleeve-like support (2) that may be welded on the vertical frame (6), which support on its bottom has a slot (3) extending in longitudinal direction which is larger in width than a fall bar (5) fitted with a bearing in the interior of support (2) and pivoting around a horizontal axis, which fall bar protrudes downwardly from the slot (3) when in its vertical lock position and may be pivoted out of same solely towards the welded end of the support (2) in the interior thereof to reach its horizontal open position, the pivoting angle being confined to about 90°. In order to ensure functional security, particularly when exchanging or replacing the fall bar (5) under unfavorable ambient conditions on the building site, the invention suggests that the slot (3) be closed at its front, the fall bar (5) coming to a stop at the slot front wall when pivoted in forward direction into its lock position.
A pivoting pin for use on scaffold vertical frames as a connecting element for scaffold bars and braces extending in horizontal and/or vertical directions, comprising a tubular sleeve-like support having a first end that may be welded on the vertical frame, the support having a bottom with a slot extending in a longitudinal direction through the bottom, the slot being larger in width than a fall bar, the fall bar having a fixed horizontal pivot axis about a horizontal bearing in an interior of the support, the fall bar being pivotable about said axis to protrude downwardly from the slot into a vertical lock position and may be pivoted out of the vertical lock position solely towards a the first end of the support into the interior of the support to reach a horizontal open position, the pivoting angle being confined to 90° between to the horizontal open position, and the vertical lock position the slot (3) being closed by a front wall, the fall bar (5) coming to a stop at the slot front wall when pivoted in a forward direction to the lock position of 90° with respect to the horizontal open position.
Dependencies are inferred from the claim text.