Ladder extension coupling

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4519478
SERIAL NO

06611206

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A ladder extension is disclosed comprising two separable sections to be coupled together in longitudinally overlapping relation by first coupling means coupling a portion of a first ladder section proximate one end thereof to the second section so as to permit the first ladder section to be rotated with respect to the second ladder section to a position where second coupling means are aligned in position for engagement, preferably with stop means being provided to stop rotation of the first ladder section at a position where the second coupling means are aligned for engagement. The ladder comprises two separable sections which is easy to asemble by a single person even under adverse field conditions and which provides means to positively lock together the sections when assembled into an extension ladder.

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Patent Owner(s)

Patent OwnerAddress
LOUISVILLE LADDER CORP100 ENGELHARD DRIVE AURORA ONTARIO L4G 3V2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hulme, James H Milton, CA 1 3
Shinn, Stuart E Scarborough, CA 1 3

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