Ladder jack clamping devices
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United States of America Patent
Stats
-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Jun 15, 1987
filing date -
Jun 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ladder jack supported by an inclined ladder and adapted to securely support a work platform comprising a horizontal support member fitted with a longitudinally adjustable clamping means to securely clamp the work platform in locking engagement with the ladder jack and prevent movement of the work platform in all directions and planes while in use.
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