Pump jack hoisting apparatus including a safety railing for prot

Details Pump jack hoisting apparatus including a safety railing for prot Pump jack hoisting apparatus including a safety railing for prot

1997-05-14

2000-01-18

Chin-Shue, Alvin

Fire escape, ladder, or scaffold

Pole or strand grasping-type climber

Alternate grasping

182113, 182146, E04G 118

Patent

active

060150289

ABSTRACT:
A pump jack hoisting apparatus includes a safety railing for protecting workers from accidental falling. The apparatus includes a pair of laterally spaced pump jack poles each of which is associated with a respective pump jack. Each pump jack includes inner and outer support extensions for supporting thereon inner and outer walking platforms. A pair of generally L-shaped support frames is removably secured to the outer support extension of the respective pump jack. Each support frame includes a vertically extending arm and a horizontally extending brace. The brace includes a mounting member for engaging the outer arm of the respective pump jack. A plurality of generally L-shaped rail brackets are vertically spaced on the arms and include a top-open recess. A safety rail is removably positioned in the recess and extends between the pair of support frames.

REFERENCES:
patent: 1616743 (1927-02-01), Ericsson
patent: 3747896 (1973-07-01), Warren
patent: 3867997 (1975-02-01), Hyslop, Jr.
patent: 4236698 (1980-12-01), Compte
patent: 4276959 (1981-07-01), Barber
patent: 4598794 (1986-07-01), Anderson
patent: 4641728 (1987-02-01), McCabe
patent: 4666131 (1987-05-01), Kettelkamp
patent: 4673060 (1987-06-01), Gregory
patent: 5307899 (1994-05-01), Lubinski
patent: 5314167 (1994-05-01), Holloman
patent: 5638917 (1997-06-01), Vennen
Aberdeen's Magazine of Masonry Construction, Oct. 1996, vol. 9, No. 10, p. 455.
Alum-A-Pole Corporation 1985 Brochure (2 pages).

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