Title: Pole ladder

Abstract: A collapsible ladder for suspension on a pole, securely in place, by the mere stepping on the platform or treads which effects insertion of cleats into the pole. A chain, which surrounds the pole for supporting the ladder, is tightly gripped around the pole by turning a swivelly mounted tightening screw.

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Other info:

Inventors: Hunter, Alex E. (Pittsburgh, PA, US)

Application Number: 637374
Filing Date: 1975-12-03
Publication_date: 1977-03-01
Assignee:
Primary Class(es): 182/187
Other Classes:
US Patent Ref:

505343	Sep, 1893	Austin	182/156.
1955127	Apr, 1934	Heintz	182/187.
2060953	Nov, 1936	Strom	182/187.
2855980	Oct, 1958	Konieczka	182/187.
2982337	May, 1961	Arena	182/187.
3817350	Jun, 1974	Gray	182/187.

Other Refs:
Primary Examiner: Machado, Reinaldo P.
Assistant Examiner:
Attorney: Ruano; William J.