E - Fixed Constructions – 06 – C
Patent
E - Fixed Constructions
06
C
E06C 1/34 (2006.01) E06C 7/18 (2006.01) E06C 9/02 (2006.01)
Patent
CA 2228729
A retractable safety post for facilitating access in and out of a manhole is slidably attached to each side rail of a wall-mounted ladder. Each post slides within a tubular sleeve fixed to the side rail and is selectively movable between a retracted or stowed position to an extended or use position. Each post has at its upper end a cap and handle for ease of grasping during use, and at its lower end a latch member for securing the post in its extended position during use. A wall bracket anchoring the ladder to the manhole serves as a resting support for the latch member and its post when in the extended position. The post is secured in the extended position by merely lifting the post, twisting the post a given amount in a pre-set direction, and lowering the post slightly so that the latch member can engage the wall bracket. In its stowed position, the post rests wholly within the manhole.
Lorentz Garry
Lorentz Garry
Malyszko Thomas E.
LandOfFree
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