Observation platform

Details Observation platform Observation platform

1997-02-03

1998-12-01

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Scaffold external of shaft

108152, A45F 300

Patent

active

058425411

ABSTRACT:
A portable collapsible platform having a platform, with a mounting edge, a support frame swingably mounted to the mounting edge of the platform and being swingable between a more or less nested portable position closely adjacent the platform, and an extended more or less vertical position, attachments for attaching the support frame to a structure above the ground, flexible strain elements extending between the support frame and the platform to hold the platform, when it is extended, generally horizontal, and, teeth on the mounting edge of the platform, for engaging the structure.

REFERENCES:
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patent: 4120379 (1978-10-01), Carter
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patent: 4474265 (1984-10-01), Shinkle
patent: 4493395 (1985-01-01), Rittenhouse
patent: 4813441 (1989-03-01), Kepley
patent: 4953662 (1990-09-01), Porter
patent: 5186276 (1993-02-01), Craig
patent: 5279390 (1994-01-01), Phillips
patent: 5285868 (1994-02-01), Amacker
patent: 5297656 (1994-03-01), Amacker
patent: 5363941 (1994-11-01), Richard

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