Insulated boom structure for telescoping aerial lift

Details Insulated boom structure for telescoping aerial lift Insulated boom structure for telescoping aerial lift

1984-08-20

1985-08-13

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

182 46, B66F 1104

Patent

active

045344442

ABSTRACT:
The invention provides improved telescopic boom structure for aerial lifts, including the provision of a lower boom structure outer end portion made of electrical insulating material, which together with other provisions, accomplishes the essential elimination of electric shock hazard to personnel without incurring any of the disadvantages of significantly increased expense, reduced effective working area due to reduced range of boom extension, or increased stowed length of the boom structure.

REFERENCES:
patent: 3043394 (1962-07-01), Hall
patent: 3136385 (1964-06-01), Eitel
patent: 3139948 (1964-07-01), Rorden
patent: 3947191 (1976-03-01), Milner
patent: 4385704 (1983-05-01), Spain
patent: 4434902 (1984-03-01), Goode

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