Delayed deployment platform

Details Delayed deployment platform Delayed deployment platform

1983-02-22

1984-04-03

Machado, R. P.

Fire escape, ladder, or scaffold

With sucker rod support

182142, 182113, 52121, 175 85, B66C 2304, B66C 2362

Patent

active

044402627

ABSTRACT:
Disclosed is a delayed deployment platform or racking board for use on oil well derricks or the like. The automatic system for delayed deployment allows the derrick rack to be utilized with very tall pump jacks or the like. The delayed deployment system does not lower the racking board until the derrick has extended sufficiently for the board to clear tall pump jacks and the like.

REFERENCES:
patent: 2191643 (1940-02-01), Deckard
patent: 2291055 (1942-07-01), Ortloff
patent: 2358755 (1944-09-01), Woody
patent: 2662797 (1953-12-01), Moon
patent: 4157129 (1979-06-01), Christopher
patent: 4326602 (1982-04-01), Bryant
patent: 4393630 (1983-07-01), Knox

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