Fire escape – ladder – or scaffold – Combined
Patent
1999-04-09
2000-08-08
Stodola, Daniel P.
Fire escape, ladder, or scaffold
Combined
248238, E04G 100, E04G 300, E04G 308
Patent
active
060987499
ABSTRACT:
A work holder is adapted to be removably mounted on a scaffold that has vertically spaced, horizontally disposed cross members. The work holder has a base frame including spaced, parallel, vertically elongated receivers, and mounting brackets carried by the base frame near an upper end of the base frame, the brackets being adapted to engage a horizontal cross member of the scaffold and to support the base frame against both downward and outward displacement. Vertically elongated extendable members are slidably mounted on the spaced parallel base members for movement lengthwise thereof. Clamps are provided for holding the extendable members in selectable positions with respect to the base member. A work holder is mounted on the elongated extendable members, at an upper ends of the extendable members.
REFERENCES:
patent: 1376924 (1921-05-01), Dixson
patent: 3139154 (1964-06-01), Ewald
patent: 3208555 (1965-09-01), Fry
patent: 3490558 (1970-01-01), Foley
patent: 5120013 (1992-06-01), Sweeney
patent: 5544718 (1996-08-01), Schumacher
patent: 5584357 (1996-12-01), Gugel et al.
patent: 5622463 (1997-04-01), Testa
patent: 5740883 (1998-04-01), Trank
patent: 5913380 (1999-06-01), Gugel et al.
Stodola Daniel P.
Thompson Hugh B.
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